034Motorsport Single Mass Flywheel for B6/B7 Audi S4 (For Use With B7 Clutch) | 034-503-1023

The 034Motorsport Single Mass Flywheel (034-503-1023) is a high-performance drivetrain upgrade for the B6 and B7 Audi S4. Precision-machined in-house from 6061 billet aluminum, this flywheel is designed to eliminate the heavy, failure-prone factory dual-mass unit. Weighing only 13 lbs—less than half the weight of the 26.5 lb stock version—it dramatically reduces rotational inertia. This results in faster engine revving, significantly improved throttle response, and effortless rev-matching during downshifts.

Engineered for versatility and durability, this flywheel features a replaceable steel friction surface and a steel ring gear, allowing for long-term serviceability. It is designed to be used in conjunction with a B7 S4 clutch and pressure plate, making it a perfect choice for those performing a clutch service who want to improve the visceral connection between the 4.2L V8 and the driver. The kit comes complete with new high-strength flywheel bolts to ensure a secure installation.

Key Features:

• Significant Mass Reduction: Weighs just 13 lbs (13.5 lbs lighter than stock), providing a transformative increase in engine response.
• 6061 Billet Aluminum: Machined for maximum strength and weight efficiency compared to cast factory components.
• Direct Replacement: Engineered to replace the stock dual-mass flywheel (DMF) that often fails under high performance or high mileage.
• Replaceable Friction Surface: Includes a steel friction plate that can be replaced during future clutch services, extending the life of the flywheel.
• Improved Drivability: Allows the engine to reach its power band faster and makes heel-toe downshifting much more precise.
• Hardware Included: Includes a fresh set of flywheel bolts for a comprehensive installation.

Technical Specifications:

Driving Note: Transitioning from a dual-mass to a lightweight single-mass flywheel may introduce a slight amount of gear "chatter" or noise at idle while the clutch is engaged. This is common with performance aluminum flywheels.