Act 600170 ACT XACT Prolite Flywheels engine-valve-train-pushrods 2014-2018 Ski-Doo Summit Sport 600

2014-2018 Ski-Doo Summit Sport 600 Carb

2015 Ski-Doo Summit SP E-TEC 600 HO 154

1977-1978 Arctic Cat Pantera 5000 F/C

for extra warmth that still wicks moisture fast and dries quick

1998 Yamaha YFM350U Big Bear 2x4

Act 600170 ACT XACT Prolite Flywheels engine-valve-train-pushrods 2014-2018 Ski-Doo Summit Sport 600Dramatically improved engine response and acceleration, mild to moderate gear rattle; Heat treated forging for strength and toughness, induction hardened ring gears for maximum life; One piece construction allows less opportunity for failure and provides uniform efficient heat transfer from the clutch disc. No more warped inserts or loose ring gears; Recommended for race use; Forged, CNC machined and dynamically computer balanced for smooth high RPM