COVER GENERATOR YAMAHA YZ 85 2002-2021 BOYESEN BOYSC-30B NERO

Boyesen QuickShot Accelerator Pump Cover Stock accelerator pump covers permit only a 60% - 70% fuel charge in the pump chamber. Turn the throttle and air in the chamber is compressed and fuel is delayed. The result: Hesitation or Bog. The Boyesen QuickShot cover completely fills the pump chamber with fuel, and provides instant fuel delivery, eliminating the hesitation and bog. Superior to stock accelerator pump covers 25% more fuel capacity Stops hesitation and bog Accelerates fuel delivery Instant response to throttle movements Improved low end performance Reduced hot engine stalling No modification required - simple bolt-on