Yamaha YZ426F 2000, QuickShot Accelerator Pump Cover by Boyesen®. 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.
For more than 30 years Boyesen® has specialized in the design and manufacture of high-performance parts to the power sports industry. The confidence instilled by Factory Race Team Research and Development partnerships bleeds all the way down to weekend warriors looking for the highest performing and longest lasting products on the market. Boyesen's tagline, "Leading Edge Performance", is recognized worldwide. From their innovative industry leading performance reeds, to their complete intake track System, Boyesen continues to consistently set the standard for performance and manufacturing build quality.
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Boyesen® - QuickShot Accelerator Pump Cover
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Good Stuff
I was looking for some add-on to tune out bog. Ordered this pump cover from Boyesen. It’s easy to install, works well to stop low end bog and improves performance.
Posted by Brent (Burlington, MI) / April 16, 20192009 Polaris Outlaw 450 MXR