• ATI’s Super Damper for Subaru EJ20, EJ22 and EJ25 engines
• Dampens torsional crankshaft vibrations at all RPM levels
• Protects against engine harmonics
• Direct replacement for the OEM unit
• Four-rib and five-rib serpentine belt drives
• 5% Overdriven
• Utilizes factory serpentine belt set-up
• Laser-etched timing marks
• SFI 18.1 Safety Certification and are approved for competition use

SPECS

• Shell Material: Aluminum, Part #916883 5% Overdriven
• Hub Material: Steel, Part #916884
• Inertia Weight: 2.2 LBS, 3-Ring