Boyesen Power Reed Dualstage Kawasaki Kx125 89-93 Black Friday Sale MOTOCROSS MONSTER - The 420MX

MOTOCROSS MONSTER - The 420MX chain has the highest rating tensile strength in the D

Pro Circuit designed a much more durable replacement exhaust flange that is CNC-machined making it less susceptible to breaking

Available in black

YZ250F 01-23

​· Husqvarna TC125 2018 / TC250 2018

Boyesen Power Reed Dualstage Kawasaki Kx125 89-93 Black Friday Sale MOTOCROSS MONSTER - The 420MXOne reed petal is NOT enough! Boyesen's revolutionary dual stage reed design delivers more usable power than stock. Stock single stage reeds operate most effectively within a relatively narrow RPM range and are limited because of the single stage design. Boyesen's one soft reed on top of one firm flow through reed gives you a wide range of intake control, plus increased intake velocity. Your original reeds can't possibly duplicate that performance.