diff --git a/src/base/client.ts b/src/base/client.ts
index 98e2b33..562c5f3 100644
--- a/src/base/client.ts
+++ b/src/base/client.ts
@@ -26,11 +26,12 @@ config();
  *
  * @class ClientConfig
  */
-export class ClientConfig {
+export class ClientConfig<Params extends CommonParameters = CommonParameters> {
   public baseUri?: string;
   public cacheManager?: ICacheManager;
   public headers?: BasicHeaders;
-  public parameters?: CommonParameters;
+  // Params defaults to CommonParameters
+  public parameters?: Params;
   public retrySettings?: OperationOptions;
   public fetchOptions?: RequestInit;
 }
diff --git a/src/base/staticClient.ts b/src/base/staticClient.ts
index df4194e..90da65f 100644
--- a/src/base/staticClient.ts
+++ b/src/base/staticClient.ts
@@ -34,6 +34,7 @@ export type SdkFetchOptions = {
   rawResponse?: boolean;
   retrySettings?: OperationOptions;
   fetchOptions?: RequestInit;
+  disableTransformBody?: boolean;
   body?: unknown;
 };
 
@@ -175,7 +176,7 @@ export const transformRequestBody = (
  * @returns Either the Response object or the DTO inside it wrapped in a promise,
  * depending upon options.rawResponse
  */
-async function runFetch(
+export async function runFetch(
   method: "delete" | "get" | "patch" | "post" | "put",
   options: SdkFetchOptions
 ): Promise<object> {
@@ -218,7 +219,9 @@ async function runFetch(
   };
 
   if (typeof options.body !== "undefined") {
-    fetchOptions.body = transformRequestBody(options.body, fetchOptions);
+    fetchOptions.body = options.disableTransformBody
+      ? (options.body as BodyInit)
+      : transformRequestBody(options.body, fetchOptions);
   }
 
   logFetch(resource, fetchOptions);
diff --git a/src/index.ts b/src/index.ts
index c01fc20..6717902 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -12,7 +12,14 @@ export {
   ResponseError,
 } from "./base/client";
 
-import { _get, _delete, _patch, _post, _put } from "./base/staticClient";
+import {
+  _get,
+  _delete,
+  _patch,
+  _post,
+  _put,
+  runFetch,
+} from "./base/staticClient";
 
 export {
   getObjectFromResponse,
@@ -26,6 +33,7 @@ export const StaticClient = {
   patch: _patch,
   post: _post,
   put: _put,
+  runFetch,
 };
 
 export { IAuthToken, ShopperToken, stripBearer } from "./base/authHelper";