The JE single piston for 2017 Honda CRF450 is specified at a 13.5:1 compression ratio and serves as a direct replacement option for that model year. Supplied as a single piston for the CRF450 application, it fits into typical maintenance and repair workflows where restoring correct compression and piston condition is required during an engine rebuild or service.
JE Pistons Honda M/C CRF 450 2017 13.5 to 1 Piston Single