BOYESEN MOTORCYCLE POWER REED (690) YAMAHA RS VECTOR 1050 Replacement visor kit for AT21

Replacement visor kit for AT21 helmets

Systems fit securely in the stock location using stock mounts

BOLT HOLE SPACING: 72MM / 2

This is a screw type stainless steel clamp for use with all four (4) sizes of fuel and oil lines

20 FINS X 1

BOYESEN MOTORCYCLE POWER REED (690) YAMAHA RS VECTOR 1050 Replacement visor kit for AT21BOYESEN 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