Performance Dirt Bike Piston Set Dirt Bike Engine Rebuild KIT PISTON COMPLET WISECO KX 125 99/00 DIAMETRE 53.95 2-stroke Piston And Gasket Set Wiseco Motorcycle Piston Kit Most castings are brittle, have no grain structure and tend to fail catastrophically when the material yield strength is exceeded. Features:Most Wiseco 2-cycle pistons are forged from high-silicone bar stockGreater strength and lower expansion at high temperaturesComplete piston... Forgings have condensed grain that is aligned to the features of the part, which produces higher mechanical properties and resistance to impact and fatigue. Buy Wiseco - PK1219 - Top End Kit, Standard Bore 73.00mm, 10.5:1 Piston domes are designed for optimal quench during the compression / combustion cycle, resulting in resistance to detonation and pre-ignition; the end product is longer engine life and increased horsepower potential Each forging is designed to optimize the strength-to-weight ratio and maximize performance. Popular items in this category Best selling items that customers love $144.29 Wiseco PK1904 48.50 mm 2-Stroke Motorcycle Piston Kit with Top-End Gasket Kit Linking all segments of Wiseco's organization through design, testing, manufacturing and distribution helps to fulfill market needs with minimum lead-times. Compared to cast pistons, forgings are tougher and more durable and will stand up to the abuse that high performance motorsport applications require. Extreme racing conditions demand the strength and toughness that only forged pistons can offer.