Exedy FF501A Clutch Flywheel

EXEDY Lightweight Racing Flywheel for Subaru Performance Builds

The EXEDY FF501A is a lightweight clutch flywheel built for Subaru WRX, WRX STI, Impreza, and Legacy applications that need quicker engine response and stronger heat handling. It combines low weight, low inertia, and high thermal capacity for street-driven cars and light to moderately tuned race setups.

Lightweight Racing Flywheel Features

• One-piece billet chromoly steel construction for strength and consistency
• Reduced rotating mass for faster rev changes and sharper throttle response
• High thermal capacity for drag racing, autocross, rally, and street use
• Fits select Subaru WRX STI, WRX, Impreza, and Legacy applications
• EXEDY Lightweight Racing Flywheel line focused on performance clutch system upgrades
• Part number FF501A for application matching and catalog lookup

Built for Subaru Drivetrain Response

EXEDY’s Lightweight Racing Flywheel line is aimed at drivers who want a more responsive drivetrain without moving away from a solid, one-piece flywheel design. The FF501A reduces inertia so the engine can climb and drop revs more quickly, which is useful in Subaru WRX STI and Subaru WRX performance builds where throttle response and heat management matter. This part number FF501A is also listed for Subaru Impreza and Subaru Legacy fitments with specific clutch and bolt-pattern notes.

Fitment Details

• Fits 2018-2019 Subaru WRX STI, N/A
• Fits 2017 Subaru WRX STI, N/A, 4-Puck Disc
• Fits 2015-2016 Subaru WRX, N/A, Turbo, STI
• Fits 2015-2016 Subaru WRX STI, N/A, 8 Bolt; One Piece Billet Chromoly Steel; 13.3 lb.; A; Pull Type; Lightweight Racing Flywheel
• Fits 2004-2014 Subaru Impreza, N/A, 8 Bolt; One Piece Billet Chromoly Steel; 13.3 lb.; A; Pull Type; Lightweight Racing Flywheel
• Fits 2006-2009 Subaru Legacy, N/A, 8 Bolt; One Piece Billet Chromoly Steel; 13.3 lb.; A; Lightweight Racing Flywheel

What This Flywheel Helps Address

• Slow engine rev-up during acceleration
• Delayed throttle response in performance driving
• Heat buildup in demanding clutch and flywheel use
• Need for a stronger flywheel in tuned Subaru applications
• Drivetrain behavior that feels less direct in autocross, rally, or drag racing

Installation Notes and Tips

Verify the Subaru model year, clutch type, bolt count, and any listed notes before installation. This flywheel is application-specific, so matching the exact WRX STI, WRX, Impreza, or Legacy configuration is important for proper fitment. Have the clutch system inspected during installation and confirm flywheel surface condition before assembly.

Quality Assurance

EXEDY is known for performance clutch and flywheel components, and the FF501A follows that focus with a one-piece billet chromoly steel design for Subaru performance use. Part number FF501A is cataloged for select Subaru WRX STI, WRX, Impreza, and Legacy applications.