ATI DAMPER - 5.50 - AL - 4 & 5 GRV - SUBARU WRX EJ20 22 25 ENGINE 1-PC

Over the years, ATI has earned a reputation for its cutting edge technology, attention to detail, and rigorous testing under race conditions. By staying true to these basic principles, ATI has built a loyal customer base; many of whom still use parts purchased from ATI in the 1980’s.

Today, ATI manufactures a multitude of high performance parts including competition transmissions such as the incomparable Superglide®, Treemaster Converters®, Super Dampers®, Compu-Flow® Valve Bodies, Flexplates and Adapter Kits as well as a wide variety of performance enhancing internal transmission components. Innovative designs, partnered with a commitment to racing, allows the company to maintain a prominent position on the cutting edge of high performance component design and manufacturing. ATI proudly holds over a dozen U.S. Government patents, with others pending.

The patented ATI Super Damper is the only damper designed exclusively for high performance engines.

• Eliminates torsional crankshaft vibrations
• Exceeds SFI 18.1 specs
• Black zinc chromate finished
• Tunable, rebuildable, and extremely efficient at ALL RPM
• Laser engraved 360° timing marks

Inner and outer shells are available in aluminum or steel contain the steel inertia weight. The inertia weight has six (2-ring design) or eight (3-ring design) computer machined grooves to retain the proper durometer O-rings (dyno tested for each application).