ATI Super Damper Harmonic Damper | 1G / 2G DSM & Evo 8/9

Mitsubishi Super Damper Harmonic Damper

ATI has designed a 6.325” damper -- Part # 918250 -- for the Mistubishi Evolution VIII & IX 4G63 for high horsepower street & track use. This new design is a direct replacement for the stock OEM damper. The heart of this unit is the tried and true “damper within a damper” design that has put ATI ahead of the rest. The outer shell is machined to utilize the factory serpentine belt set-up and mounts to the factory crank via a custom hub which replaces the stock timing gear. The damper's outer diameter is 12% larger than OEM. The factory lower timing cover will need to be trimmed for hub clearance.

ATI has also designed a 6.325” damper -- Part # 918251 -- for the Mistubishi Eclipse, DSM 4G63 & 4G64 for high horsepower street & track 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. The damper's outer diameter is 12% larger than OEM. The factory lower timing cover will need to be trimmed for hub clearance.

Features

• Eliminates torsional crankshaft vibrations
• Exceeds SFI 18.1 specs
• Black zinc chromate finished
• Laser engraved 360° timing marks
• Damper hub and lower timing gear is made into 1 piece for strength. Also requires trimming of the lower timing cover for clearance
  
  
• DSM - Timing marks at TDC, 5°, 10°, 15°, 20°, 25°, 30° with clockwise rotation
• EVO - 12% OD from OEM. For correct belt length, use Carquest/Gates K060715

Benefits

• Tunable, rebuildable, and extremely efficient at ALL RPM