Boyesen Factory Racing RAD-33J Rad replacement valve

An aero-form reed replacement valve that corrects the problems associated with existing reed replacement valve designs.
Maintains flow velocity through the replacement 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.

This item fits H-D the following vehicle applications:
fits YAM YZ125 2005-2021
fits YAM YZ125X 2020-2021