BOYESEN SNOWMOBILE POWER REED (538) KAWASAKI Z550 B1 SPX RECOIL SPRING

SPX RECOIL SPRING

Fits select Polaris models

Wrist Pin Bearings (Where applicable)

SPX TRIPLE THROTTLE CABLE

we have had plenty of time for testing on the new 600R both on snow and our in-house dyno

BOYESEN SNOWMOBILE POWER REED (538) KAWASAKI Z550 B1 SPX RECOIL SPRINGBOYESEN SNOWMOBILE POWER REED Boyesen's patented dual stage design incorporates a specially shaped top reed and a ported bottom reed. The top reed is lightweight and resilient for crisp throttle response at partial throttle or low RPMs. The stiffer, bottom reed is ported to provide maximum flow and horsepower at higher RPMs. More valves equals more power More Air Flow. The dual stage design allows you to replace your stock reed stop with a Rev Plate