*Improved throttle response.

*Excellent companion to the adjustable leak jet giving you greater range of adjustment.

*No need for any wiring on the accelerator pump.

*Allows use of longer diaphragms.

*Precision machined for super accurate jetting.

*Knurled end for easy adjustment.

*Improved fit over stock, for better resistance to backing out due to vibration.

*When the mixture gets out of this range it can cause a noticeable loss of power, poor starting, damage to internal components, and it can cause the engine to overheat.

*When the throttle of an internal combustion engine is opened rapidly the engine quickly sucks in a large volume of air through the intake. Unfortunately, the large FCR MX  carburettors lose velocity when opened very fast, and rely on an accelerator pump to compensate this small pump literally sprays a small jet of fuel in to the engine to richen the mixture to an acceptable level. If the amount of fuel isn’t increased to match the volume of air, the bike can hesitate, bog.

*The best way to combatbog, is to accurately regulate the jetting and then adjust the accelerator pump to match the air flow.

*The most accurate way to adjust the accelerator pump is to install this highly accurate kit, the leak jet will be replaced with an adjustable leak circuit so you can get the engine dialled in perfectly no matter where you are.

*Fits all modern 4 stroke bikes fitted with FCR  carburettor.