Boyesen Quickshot Keihin FCR Carburetors

Boyesen QuickShot 3 Adjustable Pump Cover

Stock accelerator pump covers permit only a 60% -- 70% fuel charge in the pump chamber. Turn the throttle and air trapped in the chamber is compressed disrupting fuel delivery. All the while tuning the squirt means a complicated change of the leak jet.

The Result: Hesitation, bog and a tuning headache.

The Patented Boyesen QuickShot 3's triple effect: 1. Completely fills the pump chamber with fuel 2. Eliminates troublesome air and 3. Provides an adjustable leak jet circuit for simple hand tuning.

The Result: The ultimate in adjustable fuel injection.

> Tunable leak jet maximizes volume of fuel and duration of squirt for all conditions
> Investment cast and finished to precise tolerances
> 25% more fuel capacity
> High volume vertical check valve located in the QS3 for precise, consistent fuel metering
> Stops hesitation and bog
> Instant throttle response
> Improved low end performance
> Fits ALL Keihin FCR carbs
> Simple bolt-on