diff --git a/composer.json b/composer.json
index a4cd16a..ff0711f 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     },
     "require": {
         "php": ">=5.4.0",
-        "chuyskywalker/rolling-curl": "~3.1"
+        "guzzlehttp/guzzle": "~5.2"
     },
     "require-dev": {
         "phpunit/phpunit": "~4.5"
diff --git a/composer.lock b/composer.lock
index 9fde641..af9d668 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,105 +4,101 @@
         "Read more about it at http://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "d5b71f8bcfd1b3afdbb75cb09669c46a",
+    "hash": "5b62a4b12ebf9025763ac709f4cc57eb",
     "packages": [
         {
-            "name": "chuyskywalker/rolling-curl",
-            "version": "3.1.0",
+            "name": "guzzlehttp/guzzle",
+            "version": "5.2.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/chuyskywalker/rolling-curl.git",
-                "reference": "fc1d28c221962f25e9615bd3991dd82732420c8c"
+                "url": "https://github.com/guzzle/guzzle.git",
+                "reference": "475b29ccd411f2fa8a408e64576418728c032cfa"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/chuyskywalker/rolling-curl/zipball/fc1d28c221962f25e9615bd3991dd82732420c8c",
-                "reference": "fc1d28c221962f25e9615bd3991dd82732420c8c",
+                "url": "https://api.github.com/repos/guzzle/guzzle/zipball/475b29ccd411f2fa8a408e64576418728c032cfa",
+                "reference": "475b29ccd411f2fa8a408e64576418728c032cfa",
                 "shasum": ""
             },
             "require": {
+                "guzzlehttp/ringphp": "~1.0",
+                "php": ">=5.4.0"
+            },
+            "require-dev": {
                 "ext-curl": "*",
-                "lib-curl": "*",
-                "php": ">=5.3.0"
+                "phpunit/phpunit": "~4.0",
+                "psr/log": "~1.0"
             },
             "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "5.0-dev"
+                }
+            },
             "autoload": {
-                "psr-0": {
-                    "RollingCurl": "src/"
+                "psr-4": {
+                    "GuzzleHttp\\": "src/"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "Apache-2.0"
+                "MIT"
             ],
             "authors": [
                 {
-                    "name": "Jeff Minard",
-                    "homepage": "http://jrm.cc/",
-                    "role": "Developer"
-                },
-                {
-                    "name": "Josh Fraser",
-                    "email": "joshfraz@gmail.com",
-                    "homepage": "http://joshfraser.com/",
-                    "role": "Developer"
-                },
-                {
-                    "name": "Alexander Makarov",
-                    "email": "sam@rmcreative.ru",
-                    "homepage": "http://rmcreative.ru/",
-                    "role": "Developer"
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
                 }
             ],
-            "description": "Rolling-Curl: A non-blocking, non-dos multi-curl library for PHP",
-            "homepage": "https://github.com/chuyskywalker/rolling-curl",
+            "description": "Guzzle is a PHP HTTP client library and framework for building RESTful web service clients",
+            "homepage": "http://guzzlephp.org/",
             "keywords": [
-                "asynchronous",
+                "client",
                 "curl",
+                "framework",
                 "http",
-                "multi",
-                "parallel",
-                "requests"
+                "http client",
+                "rest",
+                "web service"
             ],
-            "time": "2014-08-30 03:39:25"
+            "time": "2015-01-28 01:03:29"
         },
         {
-            "name": "lusitanian/oauth",
-            "version": "v0.3.5",
+            "name": "guzzlehttp/ringphp",
+            "version": "1.0.6",
             "source": {
                 "type": "git",
-                "url": "https://github.com/Lusitanian/PHPoAuthLib.git",
-                "reference": "ac5a1cd5a4519143728dce2213936eea302edf8a"
+                "url": "https://github.com/guzzle/RingPHP.git",
+                "reference": "f43ab34aad69ca0ba04172cf2c3cd5c12fc0e5a4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/Lusitanian/PHPoAuthLib/zipball/ac5a1cd5a4519143728dce2213936eea302edf8a",
-                "reference": "ac5a1cd5a4519143728dce2213936eea302edf8a",
+                "url": "https://api.github.com/repos/guzzle/RingPHP/zipball/f43ab34aad69ca0ba04172cf2c3cd5c12fc0e5a4",
+                "reference": "f43ab34aad69ca0ba04172cf2c3cd5c12fc0e5a4",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.0"
+                "guzzlehttp/streams": "~3.0",
+                "php": ">=5.4.0",
+                "react/promise": "~2.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "3.7.*",
-                "predis/predis": "0.8.*@dev",
-                "symfony/http-foundation": "~2.1"
+                "ext-curl": "*",
+                "phpunit/phpunit": "~4.0"
             },
             "suggest": {
-                "ext-openssl": "Allows for usage of secure connections with the stream-based HTTP client.",
-                "predis/predis": "Allows using the Redis storage backend.",
-                "symfony/http-foundation": "Allows using the Symfony Session storage backend."
+                "ext-curl": "Guzzle will use specific adapters if cURL is present"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "0.1-dev"
+                    "dev-master": "1.0-dev"
                 }
             },
             "autoload": {
-                "psr-0": {
-                    "OAuth": "src",
-                    "OAuth\\Unit": "tests"
+                "psr-4": {
+                    "GuzzleHttp\\Ring\\": "src/"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -111,22 +107,107 @@
             ],
             "authors": [
                 {
-                    "name": "David Desberg",
-                    "email": "david@daviddesberg.com"
-                },
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
+                }
+            ],
+            "description": "Provides a simple API and specification that abstracts away the details of HTTP into a single PHP function.",
+            "time": "2015-02-26 20:43:09"
+        },
+        {
+            "name": "guzzlehttp/streams",
+            "version": "3.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/guzzle/streams.git",
+                "reference": "47aaa48e27dae43d39fc1cea0ccf0d84ac1a2ba5"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/guzzle/streams/zipball/47aaa48e27dae43d39fc1cea0ccf0d84ac1a2ba5",
+                "reference": "47aaa48e27dae43d39fc1cea0ccf0d84ac1a2ba5",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.4.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "GuzzleHttp\\Stream\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
                 {
-                    "name": "Pieter Hordijk",
-                    "email": "info@pieterhordijk.com"
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
                 }
             ],
-            "description": "PHP 5.3+ oAuth 1/2 Library",
+            "description": "Provides a simple abstraction over streams of data",
+            "homepage": "http://guzzlephp.org/",
             "keywords": [
-                "Authentication",
-                "authorization",
-                "oauth",
-                "security"
+                "Guzzle",
+                "stream"
+            ],
+            "time": "2014-10-12 19:18:40"
+        },
+        {
+            "name": "react/promise",
+            "version": "v2.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/reactphp/promise.git",
+                "reference": "365fcee430dfa4ace1fbc75737ca60ceea7eeeef"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/reactphp/promise/zipball/365fcee430dfa4ace1fbc75737ca60ceea7eeeef",
+                "reference": "365fcee430dfa4ace1fbc75737ca60ceea7eeeef",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.4.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "React\\Promise\\": "src/"
+                },
+                "files": [
+                    "src/functions_include.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
             ],
-            "time": "2014-09-05 15:19:58"
+            "authors": [
+                {
+                    "name": "Jan Sorgalla",
+                    "email": "jsorgalla@googlemail.com"
+                }
+            ],
+            "description": "A lightweight implementation of CommonJS Promises/A for PHP",
+            "time": "2014-12-30 13:32:42"
         }
     ],
     "packages-dev": [
@@ -1036,22 +1117,25 @@
         },
         {
             "name": "symfony/yaml",
-            "version": "v2.6.4",
+            "version": "v2.6.5",
             "target-dir": "Symfony/Component/Yaml",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/Yaml.git",
-                "reference": "60ed7751671113cf1ee7d7778e691642c2e9acd8"
+                "reference": "0cd8e72071e46e15fc072270ae39ea1b66b10a9d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/Yaml/zipball/60ed7751671113cf1ee7d7778e691642c2e9acd8",
-                "reference": "60ed7751671113cf1ee7d7778e691642c2e9acd8",
+                "url": "https://api.github.com/repos/symfony/Yaml/zipball/0cd8e72071e46e15fc072270ae39ea1b66b10a9d",
+                "reference": "0cd8e72071e46e15fc072270ae39ea1b66b10a9d",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.3.3"
             },
+            "require-dev": {
+                "symfony/phpunit-bridge": "~2.7"
+            },
             "type": "library",
             "extra": {
                 "branch-alias": {
@@ -1079,7 +1163,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "http://symfony.com",
-            "time": "2015-01-25 04:39:26"
+            "time": "2015-03-12 10:28:44"
         }
     ],
     "aliases": [],
diff --git a/src/Endpoint/AuthenticatedEndpoint.php b/src/Endpoint/AuthenticatedEndpoint.php
index 4f1842f..2fe4fad 100644
--- a/src/Endpoint/AuthenticatedEndpoint.php
+++ b/src/Endpoint/AuthenticatedEndpoint.php
@@ -2,27 +2,21 @@
 
 namespace GW2Treasures\GW2Api\Endpoint;
 
-use GW2Treasures\GW2Api\Request\RequestManager;
+use GuzzleHttp\Client;
 
 abstract class AuthenticatedEndpoint extends Endpoint {
     protected $_token;
 
-    public function __construct( RequestManager $requestManager, $token ) {
-        parent::__construct( $requestManager );
+    public function __construct( Client $client, $token, array $options = [] ) {
+        parent::__construct( $client, $options );
         $this->_token = $token;
     }
 
     /**
      * {@inheritdoc}
      */
-    protected function request( array $query = [] ) {
-        return $this->requestManager->request( $this->url(), $query, ['Authorization' => 'Bearer ' . $this->_token ]);
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    protected function requestMany( array $queries ) {
-        return $this->requestManager->request( $this->url(), $queries, ['Authorization' => 'Bearer ' . $this->_token ]);
+    protected function createRequest( array $query = [], $url = null, $method = 'GET', $options = [] ) {
+        $options = [ 'headers' => [ 'Authorization' => 'Bearer ' . $this->_token ]] + $options;
+        return parent::createRequest( $query, $url, $method, $options );
     }
 }
diff --git a/src/Endpoint/BulkEndpoint.php b/src/Endpoint/BulkEndpoint.php
index a3ac53f..704531c 100644
--- a/src/Endpoint/BulkEndpoint.php
+++ b/src/Endpoint/BulkEndpoint.php
@@ -2,7 +2,8 @@
 
 namespace GW2Treasures\GW2Api\Endpoint;
 
-use GW2Treasures\GW2Api\Request\Response;
+use GuzzleHttp\Client;
+use GuzzleHttp\Pool;
 
 trait BulkEndpoint {
 
@@ -35,7 +36,7 @@ protected function supportsIdsAll() {
      * @return string[]|int[]
      */
     public function ids() {
-        return $this->request()->json();
+        return $this->getClient()->send( $this->createRequest() )->json();
     }
 
     /**
@@ -45,7 +46,9 @@ public function ids() {
      * @return mixed
      */
     public function get( $id ) {
-        return $this->request([ 'id' => $id ])->json();
+        $request = $this->createRequest([ 'id' => $id ]);
+        $response = $this->getClient()->send( $request );
+        return $response->json(['object' => true]);
     }
 
     /**
@@ -61,15 +64,17 @@ public function many( array $ids = [] ) {
 
         $pages = array_chunk( $ids, $this->maxPageSize() );
 
-        $queries = [];
+        $requests = [];
         foreach( $pages as $page ) {
-            $queries[] = ['ids' => implode( ',', $page )];
+            $requests[] = $this->createRequest( ['ids' => implode( ',', $page )] );
         }
 
+        $responses = Pool::batch( $this->getClient(), $requests, ['pool_size' => 128] );
+
         $result = [];
-        $responses = $this->requestMany( $queries );
+        /** @var \GuzzleHttp\Message\Response $response */
         foreach( $responses as $response ) {
-            $result = array_merge( $result, $response->json() );
+            $result = array_merge( $result, $response->json(['object' => true]) );
         }
 
         return $result;
@@ -85,7 +90,7 @@ public function many( array $ids = [] ) {
      */
     public function all() {
         if( $this->supportsIdsAll() ) {
-            return $this->request(['ids' => 'all'])->json();
+            return $this->getClient()->send( $this->createRequest([ 'ids' => 'all' ]))->json(['object' => true]);
         } else {
             $ids = $this->ids();
             return $this->many( $ids );
@@ -93,18 +98,18 @@ public function all() {
     }
 
     /**
-     * Implemented by GW2Treasures\GW2Api\Endpoint\Endpoint.
-     *
-     * @param string[] $query
-     * @return Response
+     * @return Client
      */
-    protected abstract function request( array $query = [] );
+    protected abstract function getClient();
 
     /**
-     * Implemented by GW2Treasures\GW2Api\Endpoint\Endpoint.
+     * Creates a new Request to this Endpoint.
      *
-     * @param string[][] $queries
-     * @return \GW2Treasures\GW2Api\Request\Response[]
+     * @param string[] $query
+     * @param null     $url
+     * @param string   $method
+     * @param array    $options
+     * @return \GuzzleHttp\Message\Request|\GuzzleHttp\Message\RequestInterface
      */
-    protected abstract function requestMany( array $queries );
+    protected abstract function createRequest( array $query = [], $url = null, $method = 'GET', $options = [] );
 }
diff --git a/src/Endpoint/Endpoint.php b/src/Endpoint/Endpoint.php
index 0665d38..de19c31 100644
--- a/src/Endpoint/Endpoint.php
+++ b/src/Endpoint/Endpoint.php
@@ -2,39 +2,44 @@
 
 namespace GW2Treasures\GW2Api\Endpoint;
 
-use GW2Treasures\GW2Api\Request\RequestManager;
+use GuzzleHttp\Client;
+use GuzzleHttp\Query;
 
 abstract class Endpoint {
+    /** @var Client $client */
+    protected $client;
 
-    /** @var RequestManager requestManager */
-    protected $requestManager;
+    /** @var array $options */
+    private $options;
 
     /**
-     * @param RequestManager $requestManager
+     * @param Client $client
+     * @param array  $options
      */
-    public function __construct( RequestManager $requestManager ) {
-        $this->requestManager = $requestManager;
+    public function __construct( Client $client, array $options = [] ) {
+        $this->client = $client;
+        $this->options = $options;
     }
 
     /**
-     * Make a request.
-     *
-     * @param string[] $query
-     * @return \GW2Treasures\GW2Api\Request\Response
+     * @return Client
      */
-    protected function request( array $query = [] ) {
-        return $this->requestManager->request( $this->url(), $query );
+    protected function getClient() {
+        return $this->client;
     }
 
     /**
-     * Make multiple requests at once. If the RequestManager supports parallel requests, this will be way faster.
-     * Otherwise the RequestManager will fallback to multiple simple requests.
+     * Creates a new Request to this Endpoint.
      *
-     * @param string[][] $queries
-     * @return \GW2Treasures\GW2Api\Request\Response[]
+     * @param string[] $query
+     * @param null     $url
+     * @param string   $method
+     * @param array    $options
+     * @return \GuzzleHttp\Message\Request|\GuzzleHttp\Message\RequestInterface
      */
-    protected function requestMany( array $queries ) {
-        return $this->requestManager->requestMany( $this->url(), $queries );
+    protected function createRequest( array $query = [], $url = null, $method = 'GET', $options = [] ) {
+        $url = !is_null( $url ) ? $url : $this->url();
+        return $this->client->createRequest( $method, $url, $options + [ 'query' => $query ]);
     }
 
     /**
diff --git a/src/Endpoint/LocalizedEndpointProxy.php b/src/Endpoint/LocalizedEndpointProxy.php
index fa94433..755c91d 100644
--- a/src/Endpoint/LocalizedEndpointProxy.php
+++ b/src/Endpoint/LocalizedEndpointProxy.php
@@ -11,7 +11,7 @@ class LocalizedEndpointProxy extends Endpoint {
 
     /**
      * @param Endpoint $origin
-     * @param string            $lang
+     * @param string   $lang
      */
     public function __construct( Endpoint $origin, $lang ) {
         $this->origin = $origin;
@@ -41,28 +41,26 @@ public function __call( $name, $arguments ) {
     /**
      * {@inheritdoc}
      */
-    protected function request( array $query = [] ) {
-        return $this->origin->request( [ 'lang' => $this->lang ] + $query );
+    protected function createRequest( array $query = [], $url = null, $method = 'GET', $options = [] ) {
+        $query = [ 'lang' => $this->lang ] + $query;
+        return $this->origin->createRequest( $query, $url, $method, $options );
     }
 
     /**
      * {@inheritdoc}
      */
-    protected function requestMany( array $queries ) {
-        $queries = array_map( function( $query ) {
-            return [ 'lang' => $this->lang ] + $query;
-        }, $queries );
-        return $this->origin->requestMany( $queries );
+    protected function url() {
+        return $this->origin->url();
     }
 
-
     /**
      * {@inheritdoc}
      */
-    protected function url() {
-        return $this->origin->url();
+    protected function getClient() {
+        return $this->origin->getClient();
     }
 
+
     /**
      * String representation of this localized endpoint.
      *
diff --git a/src/Endpoint/V2/AccountEndpoint.php b/src/Endpoint/V2/AccountEndpoint.php
index e6cf115..431ceab 100644
--- a/src/Endpoint/V2/AccountEndpoint.php
+++ b/src/Endpoint/V2/AccountEndpoint.php
@@ -19,6 +19,6 @@ protected function url() {
      * @return mixed
      */
     public function info() {
-        return $this->request()->json();
+        return $this->getClient()->send( $this->createRequest() )->json([ 'object' => true ]);
     }
 }
diff --git a/src/Endpoint/V2/BuildEndpoint.php b/src/Endpoint/V2/BuildEndpoint.php
index 9f2f4a1..b5d2686 100644
--- a/src/Endpoint/V2/BuildEndpoint.php
+++ b/src/Endpoint/V2/BuildEndpoint.php
@@ -19,6 +19,6 @@ protected function url() {
      * @return int
      */
     public function get() {
-        return $this->request()->json()->id;
+        return $this->getClient()->send( $this->createRequest() )->json()['id'];
     }
 }
diff --git a/src/Endpoint/V2/CommerceEndpoint.php b/src/Endpoint/V2/CommerceEndpoint.php
index 0b8ea29..ff50f97 100644
--- a/src/Endpoint/V2/CommerceEndpoint.php
+++ b/src/Endpoint/V2/CommerceEndpoint.php
@@ -17,20 +17,20 @@ protected function url() {
      * @return CommerceExchangeEndpoint
      */
     public function exchange() {
-        return new CommerceExchangeEndpoint( $this->requestManager );
+        return new CommerceExchangeEndpoint( $this->client );
     }
 
     /**
      * @return CommerceListingEndpoint
      */
     public function listings() {
-        return new CommerceListingEndpoint( $this->requestManager );
+        return new CommerceListingEndpoint( $this->client );
     }
 
     /**
      * @return CommercePriceEndpoint
      */
     public function prices() {
-        return new CommercePriceEndpoint( $this->requestManager );
+        return new CommercePriceEndpoint( $this->client );
     }
 }
diff --git a/src/Endpoint/V2/CommerceExchangeEndpoint.php b/src/Endpoint/V2/CommerceExchangeEndpoint.php
index 577c5d4..15facbd 100644
--- a/src/Endpoint/V2/CommerceExchangeEndpoint.php
+++ b/src/Endpoint/V2/CommerceExchangeEndpoint.php
@@ -20,7 +20,8 @@ protected function url() {
      * @return mixed
      */
     public function gems( $quantity ) {
-        return $this->requestManager->request( $this->url() . '/gems', [ 'quantity' => $quantity ])->json();
+        $request = $this->createRequest([ 'quantity' => $quantity ], $this->url() . '/gems' );
+        return $this->getClient()->send( $request )->json([ 'object' => true ]);
     }
 
     /**
@@ -30,6 +31,7 @@ public function gems( $quantity ) {
      * @return mixed
      */
     public function coins( $quantity ) {
-        return $this->requestManager->request( $this->url() . '/coins', [ 'quantity' => $quantity ])->json();
+        $request = $this->createRequest([ 'quantity' => $quantity ], $this->url() . '/coins' );
+        return $this->getClient()->send( $request )->json([ 'object' => true ]);
     }
 }
diff --git a/src/Endpoint/V2/RecipeEndpoint.php b/src/Endpoint/V2/RecipeEndpoint.php
index 5ae9474..666f0a2 100644
--- a/src/Endpoint/V2/RecipeEndpoint.php
+++ b/src/Endpoint/V2/RecipeEndpoint.php
@@ -22,6 +22,6 @@ protected function url() {
      * @return RecipeSearchEndpoint
      */
     public function search() {
-        return new RecipeSearchEndpoint( $this->requestManager );
+        return new RecipeSearchEndpoint( $this->client );
     }
 }
diff --git a/src/Endpoint/V2/RecipeSearchEndpoint.php b/src/Endpoint/V2/RecipeSearchEndpoint.php
index 75c607b..aad1e81 100644
--- a/src/Endpoint/V2/RecipeSearchEndpoint.php
+++ b/src/Endpoint/V2/RecipeSearchEndpoint.php
@@ -19,7 +19,8 @@ protected function url() {
      * @return mixed
      */
     public function input( $id ) {
-        return $this->request([ 'input' => $id ])->json();
+        $request = $this->createRequest([ 'input' => $id ]);
+        return $this->getClient()->send( $request )->json([ 'object' => true ]);
     }
 
     /**
@@ -27,6 +28,7 @@ public function input( $id ) {
      * @return mixed
      */
     public function output( $id ) {
-        return $this->request([ 'output' => $id ])->json();
+        $request = $this->createRequest([ 'output' => $id ]);
+        return $this->getClient()->send( $request )->json([ 'object' => true ]);
     }
 }
diff --git a/src/GW2Api.php b/src/GW2Api.php
index 1e0601f..a93cb52 100644
--- a/src/GW2Api.php
+++ b/src/GW2Api.php
@@ -2,6 +2,8 @@
 
 namespace GW2Treasures\GW2Api;
 
+use GuzzleHttp\Client;
+use GuzzleHttp\Ring\Client\CurlMultiHandler;
 use GW2Treasures\GW2Api\Endpoint\V2\AccountEndpoint;
 use GW2Treasures\GW2Api\Endpoint\V2\BuildEndpoint;
 use GW2Treasures\GW2Api\Endpoint\V2\ColorEndpoint;
@@ -14,65 +16,78 @@
 use GW2Treasures\GW2Api\Endpoint\V2\RecipeEndpoint;
 use GW2Treasures\GW2Api\Endpoint\V2\SkinEndpoint;
 use GW2Treasures\GW2Api\Endpoint\V2\WorldEndpoint;
-use GW2Treasures\GW2Api\Request\RequestManager;
-use GW2Treasures\GW2Api\Request\RollingCurl\RequestManager as RollingCurlRequestManager;
 
 class GW2Api {
-    /** @var RequestManager $requestManager */
-    protected $requestManager;
-
     /** @var string $apiUrl */
     protected $apiUrl = 'https://api.guildwars2.com/';
 
-    function __construct( RequestManager $requestManager = null ) {
-        $this->requestManager = $requestManager ?: new RollingCurlRequestManager( $this->apiUrl );
+    /** @var Client $client */
+    protected $client;
+
+    /** @var array $options */
+    protected $options;
+
+    function __construct( array $options = [] ) {
+        $this->options = $this->getOptions( $options );
+
+        $this->client = new Client( $this->options );
+        $this->options = $options;
+    }
+
+    protected function getOptions( array $options = [] ) {
+        return [
+           'base_url' => $this->apiUrl,
+           'defaults' => [
+               'verify' => __DIR__ . DIRECTORY_SEPARATOR . 'cacert.pem'
+           ]
+        ] + $options;
     }
 
     public function account( $access_token ) {
-        return new AccountEndpoint( $this->requestManager, $access_token );
+        return new AccountEndpoint( $this->client, $access_token );
     }
 
     public function build() {
-        return new BuildEndpoint( $this->requestManager );
+        return new BuildEndpoint( $this->client );
     }
 
     public function colors() {
-        return new ColorEndpoint( $this->requestManager );
+        return new ColorEndpoint( $this->client );
     }
 
     public function commerce() {
-        return new CommerceEndpoint( $this->requestManager );
+        return new CommerceEndpoint( $this->client );
     }
 
     public function continents() {
-        return new ContinentEndpoint( $this->requestManager );
+        return new ContinentEndpoint( $this->client );
     }
 
     public function files() {
-        return new FileEndpoint( $this->requestManager );
+        return new FileEndpoint( $this->client );
     }
 
     public function items() {
-        return new ItemEndpoint( $this->requestManager );
+        return new ItemEndpoint( $this->client );
     }
 
     public function maps() {
-        return new MapEndpoint( $this->requestManager );
+        return new MapEndpoint( $this->client );
     }
 
     public function quaggans() {
-        return new QuagganEndpoint( $this->requestManager );
+        return new QuagganEndpoint( $this->client );
     }
 
     public function recipes() {
-        return new RecipeEndpoint( $this->requestManager );
+        return new RecipeEndpoint( $this->client );
     }
 
     public function skins() {
-        return new SkinEndpoint( $this->requestManager );
+        return new SkinEndpoint( $this->client );
     }
 
     public function worlds() {
-        return new WorldEndpoint( $this->requestManager );
+        return new WorldEndpoint( $this->client );
     }
 }
diff --git a/src/Request/RequestManager.php b/src/Request/RequestManager.php
deleted file mode 100644
index bb9ee1a..0000000
--- a/src/Request/RequestManager.php
+++ /dev/null
@@ -1,41 +0,0 @@
-<?php
-
-namespace GW2Treasures\GW2Api\Request;
-
-abstract class RequestManager {
-
-    /** @var string $baseUrl */
-    protected $baseUrl;
-
-    protected $useragent;
-
-    function __construct( $baseUrl ) {
-        $this->baseUrl = $baseUrl;
-    }
-
-    public function getCertPath() {
-        return __DIR__ . DIRECTORY_SEPARATOR . 'cacert.pem';
-    }
-
-    /**
-     * @param string   $url
-     * @param string[] $query
-     * @param string[] $header
-     * @return Response
-     */
-    public abstract function request( $url, array $query = [], array $header = [] );
-
-    /**
-     * @param string     $url
-     * @param string[][] $queries
-     * @param string[]   $header
-     */
-    public abstract function requestMany( $url, array $queries, array $header = [] );
-
-    /**
-     * @param string $useragent
-     */
-    public function setUseragent( $useragent) {
-        $this->useragent = $useragent;
-    }
-}
diff --git a/src/Request/Response.php b/src/Request/Response.php
deleted file mode 100644
index ac0c84a..0000000
--- a/src/Request/Response.php
+++ /dev/null
@@ -1,50 +0,0 @@
-<?php
-
-namespace GW2Treasures\GW2Api\Request;
-
-abstract class Response {
-
-    /**
-     * All headers of this Response.
-     *
-     * @return string[]
-     */
-    public abstract function headers();
-
-    /**
-     * Body of this Response as plain text.
-     *
-     * @return string
-     */
-    public abstract function body();
-
-    /**
-     * Status code of this Response.
-     *
-     * @return int
-     */
-    public abstract function status();
-
-    /**
-     * Specific header of this Response.
-     *
-     * @param string $name
-     * @param null   $default
-     * @return null|string
-     */
-    public function header( $name, $default = null ) {
-        $headers = $this->headers();
-        return array_key_exists( $name, $headers )
-            ? $headers[ $name ]
-            : $default;
-    }
-
-    /**
-     * Content of this Response parsed as json.
-     *
-     * @return mixed
-     */
-    public function json() {
-        return json_decode( $this->body() );
-    }
-}
diff --git a/src/Request/RollingCurl/RequestManager.php b/src/Request/RollingCurl/RequestManager.php
deleted file mode 100644
index a216380..0000000
--- a/src/Request/RollingCurl/RequestManager.php
+++ /dev/null
@@ -1,71 +0,0 @@
-<?php
-
-namespace GW2Treasures\GW2Api\Request\RollingCurl;
-
-use GW2Treasures\GW2Api\Request\RequestManager as AbstractRequestManager;
-use RollingCurl\Request;
-use RollingCurl\RollingCurl;
-
-class RequestManager extends AbstractRequestManager {
-
-    /**
-     * @param string   $url
-     * @param string[] $query
-     * @param array    $header
-     * @return Response
-     */
-    public function request( $url, array $query = [], array $header = [] ) {
-        return $this->requestMany( $url, [ $query ], $header )[0];
-    }
-
-    /**
-     * @param string     $url
-     * @param string[][] $queries
-     * @param array      $header
-     * @return Response[]
-     * @throws \Exception
-     */
-    public function requestMany( $url, array $queries, array $header = [] ) {
-        $curl = $this->getCurl();
-
-        // build curl header array from associative array
-        $header = array_map( function( $v, $k ) {
-            return $k . ': ' . $v;
-        }, $header, array_keys($header) );
-
-        $responses = [];
-
-        //echo '[GET] --- start ---' . PHP_EOL;
-        //$start = -microtime(true);
-
-        foreach( $queries as $query ) {
-            $queryUrl = $url;
-            if( count( $query ) > 0 ) {
-                $queryUrl .= '?' . http_build_query( $query );
-            }
-            //echo '[GET] ' . $queryUrl . PHP_EOL;
-            $curl->get( $this->baseUrl . $queryUrl, null, [ CURLOPT_HTTPHEADER => $header ] );
-        }
-
-        $curl->setCallback( function( Request $request ) use ( &$responses ) {
-            $responses[] = new Response( $request );
-        });
-
-        $curl->execute();
-        //echo '[GET] --- end: ' . ( ($start + microtime( true )) * 1000 ) . 'ms ---' . PHP_EOL;
-
-        return $responses;
-    }
-
-    protected function getCurl() {
-        $curl = new RollingCurl();
-        $curl->addOptions([
-            CURLOPT_CAINFO => $this->getCertPath(),
-            CURLOPT_HEADER => true,
-            CURLOPT_FAILONERROR => false,
-//            CURLOPT_USERAGENT => 'GW2Treasures Bot/1.0 (+https://gw2treasures.com/contact)'
-        ]);
-        return $curl;
-    }
-
-}
diff --git a/src/Request/RollingCurl/Response.php b/src/Request/RollingCurl/Response.php
deleted file mode 100644
index 4b5f700..0000000
--- a/src/Request/RollingCurl/Response.php
+++ /dev/null
@@ -1,66 +0,0 @@
-<?php
-
-namespace GW2Treasures\GW2Api\Request\RollingCurl;
-
-use GW2Treasures\GW2Api\Request\Response as AbstractResponse;
-use RollingCurl\Request;
-
-class Response extends AbstractResponse {
-    /** @var string $body */
-    protected $body;
-
-    /** @var string[] $headers */
-    protected $headers;
-
-    /** @var int $status */
-    protected $status;
-
-    public function __construct( Request $request ) {
-        $this->parseResponse( $request );
-    }
-
-    /**
-     * @param Request $request
-     */
-    protected function parseResponse( Request $request ) {
-        $info = $request->getResponseInfo();
-        $text = $request->getResponseText();
-        $header_size = $info['header_size'];
-
-        $headerRaw = trim( substr( $text, 0, $header_size ));
-        $headers = array();
-        foreach( explode( "\n", $headerRaw ) as $i => $line ) {
-            if( $i === 0 ) {
-                $headers['http_code'] = trim($line);
-            } else {
-                list( $key, $value ) = explode( ': ', $line, 2 );
-                $headers[ trim( $key ) ] = trim( $value );
-            }
-        }
-
-        $this->status = $info['http_code'];
-        $this->headers = $headers;
-        $this->body = substr( $text, $header_size );
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function headers() {
-        return $this->headers;
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function body() {
-        return $this->body;
-    }
-
-    /**
-     * {@inheritdoc}
-     */
-    public function status() {
-        return $this->status;
-    }
-}
diff --git a/src/Request/cacert.pem b/src/cacert.pem
similarity index 100%
rename from src/Request/cacert.pem
rename to src/cacert.pem