The JE Pistons single forged piston for Honda CRF450 fits applications specified at 12.5:1 compression and is sold as a single replacement piston. It supplies the correct piston sizing for rebuilds or upgrades that call for a higher compression ratio, helping maintain intended combustion characteristics in the CRF450 engine when the 12.5:1 piston is required.
JE Pistons Honda CRF 450 12.5 to 1 Piston Single