ACT 07-13 Mazda Mazdaspeed3 2.3T XACT Flywheel Prolite (Use w/ACT Pressure Plate & Disc)

ACT XACT Flywheel Prolite: 600521. Excellence in Performance, backed by the best one-year warranty in the industry!600521 is a Prolite flywheel, which is ACT's lighter flywheel offering with lowest inertia. Prolite flywheels are designed for best throttle response and acceleration. Prolite flywheels are preferred for road racing or rally racing, and have reduced drivability. Materials are properly distributed for maximum strength, good heat tolerance and rigidity. ACT flywheels are serviceable and can be resurfaced with no need to purchase additional parts. Material:Chromoly Steel SFI Rating:1.1 Replaceable Friction Surface:No Engine Balance:Internal Friction Surface Configuration:Flat Type:Prolite Mounting Hardware Included:No Grade Type:Performance Mounting Hole Quantity:6 Weight:15.7 LB Tooth Quantity:112 Friction Surface Diameter:9.4 IN Part Fitment Requirement:Must be used with ACT pressure plate and disc (not included). Pressure Plate bolts included (M8-1.25 x 16mm). Product Weig