The JE single piston for Honda CRF450 is a replacement piston specified at a 12.5:1 compression ratio to support correct combustion and engine operation. Supplied as a single piston for top-end rebuilds and repairs, it matches the listed specification so mechanics can restore compression and consistent running characteristics in CRF450 applications when performing a top-end service.
JE Pistons Honda CRF 450 12.5 to 1 Piston Single