Competition Clutch 2-800-STU Ultra Lightweight Flywheel for 02-11 Civic Si/02-06

Vehicle Fitment

• 2002-2006 Acura RSX Type-S (2.0L I4 K20A2/K20Z1, 6-Speed Manual)
• 2002-2005 Acura RSX Base (2.0L I4 K20A3, 5-Speed Manual)
• 2002-2011 Honda Civic Si (2.0L I4 K20A3/K20Z3, 5/6-Speed Manual)

Features

• Ultra-lightweight 4140 forged steel construction for enhanced acceleration
• One-piece design with integrated ring gear for increased durability
• CNC machined and balanced to OEM specifications
• Ideal for forced induction, track, and rally racing applications
• Compatible with all performance and stock clutch assemblies
• Meets and exceeds SFI 1.5 safety certification standards
• Reduces drivetrain inertia for quicker throttle response
• Resurfaceable for extended service life

Specifications

• Flywheel Weight: Approximately 8.8 lbs (varies by application)
• Material: 4140 forged chromoly steel
• Design: One-piece with integrated ring gear
• Surface Finish: CNC machined and balanced
• Torque Capacity: Supports Stage 3 and higher clutch kits
• Compatibility: Suited for K-series engines (K20A2, K20Z1, K20A3, K20Z3)
• Transmission Compatibility: 5-Speed and 6-Speed Manual Transmissions

Included Components

• Competition Clutch Ultra Lightweight Steel Flywheel (Part No. 2-800-STU)
• Installation instructions

Product Description

The Competition Clutch 2-800-STU Ultra Lightweight Steel Flywheel is engineered for enthusiasts seeking improved engine responsiveness and acceleration. Constructed from high-quality 4140 forged chromoly steel, this flywheel offers exceptional strength while significantly reducing rotational mass.

Its one-piece design with an integrated ring gear enhances durability and minimizes the risk of separation under high-stress conditions. CNC machined and balanced to OEM specifications, it ensures smooth operation and compatibility with both performance and stock clutch assemblies. Meeting SFI 1.5 safety standards, this flywheel is suitable for various applications, including forced induction setups, track days, and rally racing.

Compatible with a range of Acura RSX and Honda Civic Si models equipped with K-series engines, the 2-800-STU flywheel delivers quicker throttle response and improved drivability, making it an ideal upgrade for performance-oriented drivers.