Namura Technologies Hyperdryve Piston Kit - Standard Bore 94.95mm, 11.4:1 Compression - NA-40009H

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.
HYPERDRYVE is the exclusive line of pistons for 250 and 450CC motocross bikes, as well as select sport quads.