ATI Super Harmonic Damper: Mitsubishi Eclipse 1990-1999 4G63T #19827

Mitsubishi Super Dampers

These dampers are designed to help dampen torsional crankshaft vibrations and will help with the longevity of your race motor. These are mainly beneficial to engines built to rev past the recommended rev limit. Factory OEM dampers are two piece units and are prone to "splitting" apart. In addition, OEM dampers are hardly efficient past 8000 rpms.

For those looking to make power with these units, look elsewhere as these dampers were not designed nor intended for this. In fact, you may LOSE some Horsepower due to the larger overall diamter and increased weight over the factory unit. However, think of this a small insurance on that fully built $5K plus engine. The main difference in cost for this damper vs. competitors (fluidampr) is the fact that ATI builds a custom hub and timing gear to better transfer the vibration into the damper. This is a much improved design over just bolting on a damper to the stock timing gear.

The patented ATI Super Damper is the only damper designed exclusively for high performance engines:
- Eliminates torsional crankshaft vibrations
- Exceeds SFI 18.1 specs
- Laser engraved timing marks
- Black zinc chromate finish

ATI has designed a 6.325” damper for the Mistubishi Eclipse, DSM 4G63 & 4G64 for high horsepower street & race use. This new design is a direct replacement for the stock OEM damper. The outer shell is machined to utilize the factory belt set-up and mounts to the factory crank via a custom hub which replaces the stock timing gear.

Part number: 918251

More information on the benefits of these harmonic dampers can be found by using the following links:

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http://www.atiperformanceproducts.com/products/dampers/101/index.htm
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http://www.atiperformanceproducts.com/products/dampers/damper_dinan.htm