BOYESEN SNOWMOBILE POWER REED (557E) ARCTIC CAT 400 ACT 4X4 or shut down the entire

or shut down the entire engine all together

Double sealed bearings - longer life

which includes the latest construction

not remanufactured

OEM-Style valves meet or exceed OEM quality

BOYESEN SNOWMOBILE POWER REED (557E) ARCTIC CAT 400 ACT 4X4 or shut down the entireBOYESEN 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