QuadBoss 04-09 Yamaha YFZ450 Accelerator Pump Kit

If your 2004-2009 Yamaha YFZ450 is stumbling or bogging when you hit the throttle, the accelerator pump might be the culprit. This Accelerator Pump Kit from QuadBoss is designed to get that circuit working right again. It contains all the small parts you need to rebuild one accelerator pump circuit, including the O-rings, diaphragm, spring, and screws.

A properly functioning accelerator pump is key to smooth throttle response. When it's not working correctly, it can lead to a noticeable hesitation or bogging down when you try to accelerate. This kit gives you the necessary components to replace the worn-out parts in your carburetor's accelerator pump, helping to restore that crisp acceleration you expect from your YFZ450.