MiniGunz Rear Inner Fender For Honda XR100's with big carb kit and stock airbox removed. If you have removed your stock airbox to run our big carb kit, or any big carb kit - mud and dirt are constantly being thrown onto your air filter. This inner fender will help keep dirt and debris from getting onto your air filter. We also have these listed with our big carb kit for the XR100. A great custom made solution for the XR100's!