Description
Yamaha YZ65 Phathead 65cc combustion chambers YZ250 8cc 72mm 93 octane ECU remap required for CR125R9302 yz65 Chamber selection:H31 20.5cc 95+ octane 8cc 72mm 93 octane Revised squish clearance 6cc 95+ octane
Yamaha YZ65 Phathead 65cc combustion chambers YZ250 8cc 72mm 93 octane ECU remap required for CR125R9302 yz65 Chamber selection:H31 20.5cc 95+ octane 8cc 72mm 93 octane Revised squish clearance 6cc 95+ octane