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QuickStart and QuickShot Accelerator Pump Covers
Boyesen QuickStart - Hot Engine stalling is no longer a problem. Available for ALL Keihin FCR-equipped offroad, motocross, and ATV models. The patented performance of the proven Boyesen QuickShot system, now with adjustable leak jet and hot start assist integration! A serious step towards achieving EFI levels of performance.
 

The patented Boyesen QuickShot 3 is the ultimate in adjustable fuel injection for a Keihin FCR carburetor. The QuickShot 3 is a high-performance accelerator pump cover with a built-in adjustable leak jet circuit for simple hand tuning.

A stock accelerator pump cover allows only a 60% - 70% fuel charge in the accelerator pump chamber, while air fills the remaining space. Turning the throttle activates the accelerator pump, but air trapped in the chamber gets compressed, disrupting fuel delivery and often causing a hesitation or bog at the very moment you need immediate response from your engine. The proven Boyesen QuickShot 2 has shown that eliminating trapped air allows for solid fuel delivery 100% of the time, providing the instant acceleration the rider needs.

The adjustable leak jet function of the Boyesen QuickShot 3 allows the duration of the accelerator pump "squirt" to be fine tuned without removing the accelerator pump cover and replacing the leak jet, saving you time and money.  Unlike other adjustable leak jet devices on the market, the QuickShot 3 does not require any drilling or other carburetor modifications.  Just install it, adjust it, and ride!

QuickStart
Dependable Hot Engine Starting
QuickShot 3 APC3 Adjustable
Accelerator Pump Covers
QuickShot 2 APC2
Accelerator Pump Covers
QuickShot 2 APC2CV
Accelerator Pump Covers

    Availability Guide: If you order an item that is not in stock, we will not charge your card until the order is ready to ship.

      = Normally ships the same business day     = Ships in 1 to 2 business days    = Backordered from supplier
QuickStart - Accelerator Pump Covers Cost Add To Cart
QuickStart Accelerator Pump Cover with Adjustable Leak Jet and Hot Start Assist - fits KTM 250 SX-F/XC-F 2005-10, KTM 450 SX-F 2007-11,
450 XC-F 2008-09, 505 SX-F 2008, 505 XC-F 2008-09
BOY-APC3QSK

$169.99
MSRP $179.99

 
QuickStart Accelerator Pump Cover with Adjustable Leak Jet and Hot Start Assist - fits most Keihin FCR Carburetors for offroad, motocross, and ATV models.
BOY-APC3QS

$169.99
MSRP $179.99

 
QuickShot 3 - Accelerator Pump Covers Cost Add To Cart
QuickShot 3 Accelerator Pump Cover with Adjustable Leak Jet
Fits KTM 250 SX-F/XC-F 2005-10, Polaris Outlaw 525
BOY-APC3K

$114.99
MSRP $119.99

 
QuickShot 3 Accelerator Pump Cover with Adjustable Leak Jet
Fits most Keihin FCR Carburetors
BOY-APC3

$114.99
MSRP $119.99

 
QuickShot 2 - Accelerator Pump Covers Cost Add To Cart
QuickShot 2 Accelerator Pump Cover
Fits all Keihin FCR Carburetors
Does not fit Honda CRF 250R/450R/250X/450X see below (BOY-APC2CV)
BOY-APC2

$89.99
MSRP $94.95

 
QuickShot 2 Accelerator Pump Cover
Fits Honda CRF 250R 2007-09, 450R 2007-08, CRF 250X 2007-13,
CRF 450X 2008-13
BOY-APC2CV

$94.99
MSRP $99.95

 
 

Boyesen QuickStart and QuickShot - Larger images and more info

QuickStart - HOT ENGINE KICK STARTING IS NO LONGER A PROBLEM - Available for ALL Keihin FCR-equipped MX, offroad and ATV models. The Patented performance of the proven Boyesen QuickShot system, now with adjustable leak jet and hot start assist integration! A serious step towards achieving EFI levels of performance. The most effective way to add performance to your Keihin FCR carburetor. Application Note: Older models with carburetor mounted Hot Start knobs and Electric Start models will require a separate OEM or aftermarket handlebar mounted Hot Start Lever.

QuickStart - Complete Air/Fuel Tuning System
 
Integrated Hot Start Assist eliminates problem 4-stroke hot start procedure
 Tunable leak jet maximizes volume of fuel and duration of fuel spray for all conditions
 25% more fuel capacity
 High volume vertical check valve located in the QS3 for precise, consistent fuel metering
 Patented design stops bogging and improves throttle response
 Improved low end performance
 Investment cast and finished to precise tolerances
 Fits ALL Keihin FCR carbs
 Simple bolt-on for current kick start models

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:
Quickshot 31. Completely fills the pump chamber with fuel,
Quickshot 32. Eliminates troublesome air, and
Quickshot 33. 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
 "The ultimate in adjustable fuel injection" 

QuickShot 2 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.
QuickShot 2 - Instant Fuel Injection
 
Superior to stock accelerator pump covers
 Provides instant response to throttle movements
 Reduces hot engine stalling
 25% more fuel capacity
 Accelerates fuel delivery
 Eliminates hesitation and bogging
 Improves low end performance
 No modification required - simple bolt-on
 

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