Boyesen Rad Valve Bike:85-86 ATC250R Before start up - turn

Before start up - turn the idle screw on the carburetor in a turn or 2 (turn the screw back out to normal idle setting once running

Use in light duty chassis as other assembly applications

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

Feature lead-out chamfers at lining ends and original-style brake shoe springs

10W-40 Petroleum Based (Nonsynthetic)

Boyesen Rad Valve Bike:85-86 ATC250R Before start up - turnMaintain 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