BOYESEN RAD VALVE An aero-form red valve that corrects the problems associated with existing reed valve designs. Maintains flow velocity through the valve and re-directs the intake charge for ... View Details

BOYESEN PRO SERIES REEDS Pro series reeds use a carbon fiber top reed coupled with a durable fiberglass/epoxy bottom reed. Offers a quick and accurate reaction to piston speed for smooth dependa ... View Details

BOYESEN POWER REEDS Offers maximum performance. Top reed opens at lower RPMs allowing for more air and fuel flow giving you better throttle response. Bottom reed opens at higher RPMs for maxi ... View Details

BOYESEN SUPER STOCK SINGLE FIBER REEDS (SINGLE STAGE) Matched to O.E.M. specs. Uses the latest in carbon technology for the stock carbon reed. Super stock single stage fiber is dual stage on ... View Details

BOYESEN SUPER STOCK CARBON FIBER REEDS (SINGLE STAGE) Matched to O.E.M. specs. Uses the latest in carbon technology for the stock carbon reed. Super stock single stage fiber is dual stage on ... View Details