Part No. 56-W4830+00C.NF
HONDA CRF250R 04-09,
HONDA CRF250X 04-16,
COMPRESSION 13.2 : 1
These new pistons outperform many of their Aluminum 4032

competitors in the market. Comparing the two side by side, they both have very similar elongation (%), Yield Strength (kg/mm2), and Tensile Strength (kg/mm2), But Namura?s Forged pistons hold an expansion rate that is actually lower than 4032 forged aluminum.