Boyesen Rad Valve Bike:85-86 ATC250R X and Z-ring chains without

X and Z-ring chains without harming rubber o-rings or metal surfaces

Tuned for maximum peak horsepower and torque

The universal lever assembly also offers two reach adjustment points that will accommodate the widest range of bikes and rider preferences

ATC70 Oversized footpeg bar kit

Boyesen Rad Valve Bike:85-86 ATC250R X and Z-ring chains withoutMaintain flow velocity through the valve and redirect intake charge for more even distribution to intake ports Provide quicker, sharper throttle response and more horsepower throughout rpm range Specially designed reed cage holds Boyesen's patented dual stage reeds Boyesen's hot RAD valves ratchet up your torque One piece cast aluminum bolts in easily Order one set per cylinder