Spi SM-109730 Hyperdryve Piston Kit - Standard Bore 85.00mm protection 1999-2006 Polaris 500 Classic

1999-2006 Polaris 500 Classic

PE foam in hip pockets can be replaced with Sas-Tec CE certified armor for extra protection

2017-2020 Polaris Sportsman 570 Touring

Will not fall out during filter changes

Contain high-performance head and base gaskets

Spi SM-109730 Hyperdryve Piston Kit - Standard Bore 85.00mm protection 1999-2006 Polaris 500 ClassicThe next step in the evolution of high performance powersports pistons. Space age aluminum alloy maintains high tensile strength up to 700 F. Temperature resistance is 50% higher than conventional cast pistons. Temperature resistance improves fatigue strength and impact durability. Hyperdryve keeps you riding longer and harder than competitors pistons. Vehicle Fitment: 2000 2005 Polaris 800 RMK 2001 Polaris 800 RMK SP 144 2001 Polaris 800 RMK SP 151