BOYESEN MOTORCYCLE POWER REED (633) POLARIS SPORTSMAN 550 XP HD Valve Head Diameter: 31

Valve Head Diameter: 31

All wire ends are bird-caged prior to terminal casting for superior pull-out resistance

All Silicone hoses are made of high quality silicone with knitted polyester (PET) composition

Combo with the high flow silicone intake kit and gain a total of 6HP on your Skidoo turbo with no programming

the premier brands for Utility ATV and UTVPartsand Accessories

BOYESEN MOTORCYCLE POWER REED (633) POLARIS SPORTSMAN 550 XP HD Valve Head Diameter: 31BOYESEN MOTORCYCLE POWER REED Boyesens 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