diff --git a/README.md b/README.md
index e5e1006..58575d1 100644
--- a/README.md
+++ b/README.md
@@ -108,6 +108,23 @@ if ($response->isSuccessful() && 201 === $response->getStatusCode()) {
 }
 ```
 
+### Set custom headers and client timeout
+```php
+$client = new \RetailCrm\ApiClient(
+    'https://demo.retailcrm.ru',
+    'T9DMPvuNt7FQJMszHUdG8Fkt6xHsqngH',
+    \RetailCrm\ApiClient::V4
+);
+
+$options = new \RetailCrm\Http\RequestOptions(
+    ['X-Rlimit-Token' => 'example_token'], // array of custom headers
+    10 // client timeout (in seconds)
+);
+
+$client->request->setOptions($options);
+```
+
+
 ### Documentation
 
 * [English](https://help.retailcrm.pro/Developers)
diff --git a/lib/RetailCrm/Client/AbstractLoader.php b/lib/RetailCrm/Client/AbstractLoader.php
index c021a1a..ea5062d 100755
--- a/lib/RetailCrm/Client/AbstractLoader.php
+++ b/lib/RetailCrm/Client/AbstractLoader.php
@@ -15,6 +15,7 @@
 namespace RetailCrm\Client;
 
 use RetailCrm\Http\Client;
+use RetailCrm\Http\RequestOptions;
 
 /**
  * PHP version 5.4
@@ -67,6 +68,16 @@ abstract class AbstractLoader
         $this->siteCode = $site;
     }
 
+    /**
+     * Set request options
+     *
+     * @param RequestOptions $options
+     */
+    public function setOptions(RequestOptions $options)
+    {
+        $this->client->setOptions($options);
+    }
+
     /**
      * Set site
      *
diff --git a/lib/RetailCrm/Http/Client.php b/lib/RetailCrm/Http/Client.php
index f0c2840..58f8f49 100755
--- a/lib/RetailCrm/Http/Client.php
+++ b/lib/RetailCrm/Http/Client.php
@@ -37,6 +37,7 @@ class Client
 
     protected $url;
     protected $defaultParameters;
+    protected $options;
 
     /**
      * Client constructor.
@@ -57,6 +58,7 @@ class Client
 
         $this->url = $url;
         $this->defaultParameters = $defaultParameters;
+        $this->options = new RequestOptions();
     }
 
     /**
@@ -112,8 +114,12 @@ class Client
         curl_setopt($curlHandler, CURLOPT_FAILONERROR, false);
         curl_setopt($curlHandler, CURLOPT_SSL_VERIFYPEER, false);
         curl_setopt($curlHandler, CURLOPT_SSL_VERIFYHOST, false);
-        curl_setopt($curlHandler, CURLOPT_TIMEOUT, 30);
-        curl_setopt($curlHandler, CURLOPT_CONNECTTIMEOUT, 30);
+        curl_setopt($curlHandler, CURLOPT_TIMEOUT, $this->options->getClientTimeout());
+        curl_setopt($curlHandler, CURLOPT_CONNECTTIMEOUT, $this->options->getClientTimeout());
+
+        if ($this->options->getHeaders()) {
+            curl_setopt($curlHandler, CURLOPT_HTTPHEADER, $this->options->getHttpHeaders());
+        }
 
         if (self::METHOD_POST === $method) {
             curl_setopt($curlHandler, CURLOPT_POST, true);
@@ -168,4 +174,14 @@ class Client
     ) {
         return $this->makeRawRequest($path, $method, $parameters, $fullPath)->asJsonResponse();
     }
+
+    /**
+     * Set request options
+     *
+     * @param RequestOptions $options
+     */
+    public function setOptions(RequestOptions $options)
+    {
+        $this->options = $options;
+    }
 }
diff --git a/lib/RetailCrm/Http/RequestOptions.php b/lib/RetailCrm/Http/RequestOptions.php
new file mode 100644
index 0000000..486b9de
--- /dev/null
+++ b/lib/RetailCrm/Http/RequestOptions.php
@@ -0,0 +1,101 @@
+<?php
+
+/**
+ * PHP version 5.4
+ *
+ * Request options
+ *
+ * @category RetailCrm
+ * @package  RetailCrm
+ * @author   RetailCrm <integration@retailcrm.ru>
+ * @license  https://opensource.org/licenses/MIT MIT License
+ * @link     https://help.retailcrm.ru/Developers/ApiVersion5
+ */
+
+namespace RetailCrm\Http;
+
+/**
+ * PHP version 5.4
+ *
+ * Request options class
+ *
+ * @category RetailCrm
+ * @package  RetailCrm
+ * @author   RetailCrm <integration@retailcrm.ru>
+ * @license  https://opensource.org/licenses/MIT MIT License
+ * @link     https://help.retailcrm.ru/Developers/ApiVersion5
+ */
+class RequestOptions
+{
+    /** @var array */
+    private $headers;
+
+    /** @var int */
+    private $clientTimeout;
+
+    /**
+     * Init request options.
+     *
+     * @param array $headers
+     * @param int $clientTimeout
+     */
+    public function __construct($headers = array(), $clientTimeout = 30)
+    {
+        $this->headers = $headers;
+        $this->clientTimeout = $clientTimeout;
+    }
+
+    /**
+     * @return array
+     */
+    public function getHeaders()
+    {
+        return $this->headers;
+    }
+
+    /**
+     * @return array
+     */
+    public function getHttpHeaders()
+    {
+        $headers = [];
+
+        foreach ($this->headers as $header => $value) {
+            $headers[] = sprintf("%s: %s", $header, $value);
+        }
+
+        return $headers;
+    }
+
+    /**
+     * @param array $headers
+     *
+     * @return self
+     */
+    public function setHeaders($headers)
+    {
+        $this->headers = $headers;
+
+        return $this;
+    }
+
+    /**
+     * @return int
+     */
+    public function getClientTimeout()
+    {
+        return $this->clientTimeout;
+    }
+
+    /**
+     * @param int $clientTimeout
+     *
+     * @return self
+     */
+    public function setClientTimeout($clientTimeout)
+    {
+        $this->clientTimeout = $clientTimeout;
+
+        return $this;
+    }
+}
diff --git a/tests/RetailCrm/Tests/Http/RequestOptionsTest.php b/tests/RetailCrm/Tests/Http/RequestOptionsTest.php
new file mode 100644
index 0000000..f4b671c
--- /dev/null
+++ b/tests/RetailCrm/Tests/Http/RequestOptionsTest.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace RetailCrm\Tests\Http;
+
+use RetailCrm\Http\RequestOptions;
+use RetailCrm\Test\TestCase;
+
+class RequestOptionsTest extends TestCase
+{
+    public function testGetHeaders()
+    {
+        $headers = ['X-Test-Header' => 'Test'];
+        $options = new RequestOptions($headers);
+
+        self::assertEquals('X-Test-Header: Test', $options->getHttpHeaders()[0]);
+        self::assertEquals('Test', $options->getHeaders()['X-Test-Header']);
+    }
+
+    public function testGetClientTimeout()
+    {
+        $options = new RequestOptions([], 10);
+
+        self::assertEquals(10, $options->getClientTimeout());
+    }
+}