YX Big valve head for a KLX110. Taken off a running klx110 mod motor. Valves are 27mm intake and 25mm exhaust. Great upgrade from a stock head. Will work with big bore kits and stoxk bore kits with high compression pistons. Valves are in great shape, there is a bit of carbon in the intake port, most likely from a tight valve. Comes with a cam and rockers, ready to bolt on and rip.