ACT 601140 XACT Streetlite flywheel Mazda MX 5 (NC) 2.0 16v (240 mm ACT XACT StreetLite Flywheel for 2nd Gen Audi A3 Nissan 350Z Vs. 370Z: What's The Difference? Infiniti G37 Tail Light ACT Streetlite Flywheel for 2015 2021 Subaru WRX STI LSD Motorsports. ACT XACT Prolite Flywheel for the 2007 08 Nissan 350Z, 2010 16 370Z, 2007 2008 Infiniti G35, 2008 13 G37, which is considerably lighter than stock and is the most durable flywheel offering from ACT. Materials are properly distributed for maximum strength, lower inertia, good heat tolerance and rigidity. ACT's Streetlite flywheels are preferred for street or drag racing. ACT flywheels are serviceable and can be resurfaced with no need to purchase additional parts. Feel Dramatically improved engine response and acceleration, mild to moderate gear rattle Life Heat treated forging for strength and toughness, induction hardened ring gears for maximum life Quality 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 Use Recommended for race use ACT Difference Forged, CNC machined and dynamically computer balanced for smooth high RPM reliability Note: Muse be used with ACT Clutch Kit Part Number: 600590 Description: XACT Flywheel Streetlite SFI: 1. 1 Flywheel Tooth Count: 124 Product Weight (lbs.): 17. 4 Warranty (Product Warranty): One (1) Year from Retail Purchase