PISTON KIT 05-13 YZF250 77.00, NAMURA NX-40033 HYPERDRYVE

Part No. 56-W9701.A (phoenixmotos.com)

GasGas
EC 250F 2010-2015

Yamaha
WR 250F 2005-2009
WR 250F 2012-2013
YZ 250F 2005-2013

PISTON KIT NAMURA HYPERDRYVE SIZE A, 13.5.1. Compression

The new HYPERDRYVE line of pistons is composed of a space-age hypereutectic aluminum alloy developed by NASA. Engineered to maintain its high tensile strength up to 700 F(370C), 50% higher than a conventional cast piston, this gives HYPERDRYVE the strength to perform under operating conditions normally reserved for forged pistons.
Replacement PISTON RINGS USE # NX-20030R