Honda CRF250 2012 CRF450 2011-2012 Twinair Iboost throttle body power flow kit
NEW TWINAIR IBOOST POWER FLOW THROTTLE BODY INSERT. CRF250 2012. CRF450 2011-2012. For better top-end throttle response (90-100% open throttle position), use the kit’s larger butterfly valve without the sleeve.