BOYESEN MOTORCYCLE POWER REED (6121) ARCTIC CAT ZR 6000 SNO PRO ES 5 lbs and in most

5 lbs and in most cases meet J2567 sound regulation of 88 dB

Valve Head Diameter: 27mm +/-0

Twin Air is a renowned brand name and the company's product line is continually evolving and expanding

Ball Bearing

BOYESEN MOTORCYCLE POWER REED (6121) ARCTIC CAT ZR 6000 SNO PRO ES 5 lbs and in mostBOYESEN 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