ACT 600641 XACT Streetlite Flywheel for 2007-2013 Mazda Mazdaspeed3 / 2006-2007

Vehicle Fitment

• 2007-2013 Mazda Mazdaspeed3 (All Trims, 2.3L Turbocharged MZR L3-VDT, FWD)
• 2006-2007 Mazda Mazdaspeed6 (All Trims, 2.3L Turbocharged MZR L3-VDT, AWD)

Fitment Notes

• This flywheel must be used exclusively with an ACT pressure plate and clutch disc - it is not compatible with OEM or other aftermarket clutch components.
• Pressure plate mounting bolts (M8-1.25 x 16mm) are included and must be used during installation.
• Flywheel step height must be verified and maintained during any resurfacing service - do not exceed 0.040" (1.02mm) material removal.

Features

• Streetlite design is considerably lighter than the OEM flywheel, reducing rotational inertia for faster engine response and improved acceleration feel.
• Heat-treated forged steel construction provides exceptional strength and toughness under high-load street and race conditions.
• Induction-hardened ring gear delivers maximum wear resistance and long service life without requiring replacement.
• One-piece construction eliminates multi-piece failure points, ensuring uniform heat transfer from the clutch disc to the flywheel mass.
• Eliminates the OEM dual-mass flywheel's weaknesses - no warped inserts, no loose ring gears, no insert failure at elevated RPM.
• CNC machined to tight tolerances for precise clutch disc contact surface geometry and consistent clutch engagement.
• Dynamically computer balanced to within 0.25 oz-in for smooth, vibration-free operation across the full RPM range.
• Fully resurfaceable - can be reground using a standard flywheel grinder with no special tooling required, extending service life across multiple clutch replacements.
• Engineered for OE to mild gear rattle character - suitable for daily-driven street vehicles as well as drag racing applications.

Specifications

• Part Number: 600641
• Type: XACT Streetlite Single-Mass Flywheel
• Engine Compatibility: 2.3L Turbocharged MZR L3-VDT
• Construction: Forged, heat-treated steel - one-piece design
• Ring Gear: Induction-hardened, integrated (no loose inserts)
• Balance: Dynamically computer balanced to ≤ 0.25 oz-in
• Maximum Resurfacing Depth: 0.040" (1.02mm) material removal limit
• Included Hardware: M8-1.25 x 16mm pressure plate mounting bolts
• Drivetrain: FWD (Mazdaspeed3) / AWD (Mazdaspeed6)
• Recommended Use: Street, drag racing

Included Components

• 1x ACT XACT Streetlite Flywheel (600641)
• 1x Set of M8-1.25 x 16mm Pressure Plate Mounting Bolts

Product Description

The ACT 600641 XACT Streetlite Flywheel is a direct replacement for the heavy, failure-prone OEM dual-mass flywheel found on the 2007-2013 Mazda Mazdaspeed3 and 2006-2007 Mazda Mazdaspeed6. Engineered from heat-treated forged steel with a one-piece construction, the Streetlite eliminates the chronic problems associated with the stock dual-mass unit - including warped friction inserts, loose ring gears, and heat-induced failures - while delivering a noticeably lighter rotating assembly for improved throttle response and quicker rev matching during aggressive driving or track use. The integrated, induction-hardened ring gear and CNC-machined contact surface provide consistent, long-lasting performance without the need for special maintenance procedures.

Unlike OEM or budget replacement flywheels, the ACT Streetlite is dynamically computer balanced to within 0.25 oz-in - twice the precision of most stock production clutch assemblies - ensuring smooth high-RPM operation without drivetrain vibration. The flywheel is also full