Vehicle Fitment
Yamaha
Forged Big Bore Piston Kit (S5F08300002B) by Athena®. The only forged piston that offers A, B and C sizes for Nikasil cylinders. All pistons are moly-coated to help during critical break in period. Sold complete with rings, wrist pins and circlips. Athena has developed a wide range of forged pistons specifically used in the OFF-ROAD / ATV market and manufactured by a revolutionary computerised technology coming from GP & F1races. Athena forged pistons offer the best solution in terms of performance and reliability, thanks to the redesigned squish areas, modified compressions and superficial treatments, which improve their fluidity.