Boyesen RAD-11K Rad Valve helmets-helmet-accessories-replacement-parts-hardware Only fits the Kolpin Rear

Only fits the Kolpin Rear Trail Box (sold separately)

1985-1988 Yamaha YFM80 Badger

Includes hear shrink tubing

Ideal for high-performance motorcycles and/or heavy-duty touring

Boyesen RAD-11K Rad Valve helmets-helmet-accessories-replacement-parts-hardware Only fits the Kolpin RearAn aero form reed valve that corrects the problems associated with existing reed valve designs. Maintains flow velocity through the valve and re directs the intake charge for even distribution to the intake ports. Provides quicker, sharper throttle response and more horsepower. 1 piece aluminum casting; no manifolds to trim or plastic pieces to insert. Boyesen Pro Series RAD Reeds included. Vehicle Fitment: 2004 2005 Kawasaki KX125