ATI Super Damper Crank Pulley for 4G63 Evo 4-9 (918250)

ATI Dampers



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The ATI Super Damper crankshaft pulley for Evo 4-9 is suitable for high power street and race use. Direct replacement for the stock OEM damper. The damper's outer diameter is 6.325", 12% larger than OEM. The factory lower timing cover will need to be trimmed for hub clearance.

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.

Vehicle Fitment:
1996-2006 Evolution IV V VI VII VIII IX 4G63

• High horsepower street & race use
• Dampens torsional crankshaft vibrations at all RPM levels
• Protects against engine harmonics
• Direct replacement for the stock OEM damper
• 6.325" diameter, 12% overdriven
• For correct belt length, use Gates (K060715)
• Custom timing gear hub replaces the stock timing gear
• Laser-etched timing marks
• SFI 18.1 Certified for competition use

• Shell Material: 6.325" Aluminum, 6-rib drive, 12% Overdriven
• Hub Material: Steel with Timing Gear drive, #916025, 1.263" Bore
• Inertia Weight: 2.4 lbs, 3 ring

Damper: Part Number: Diameter: Weight:
4G63 Evo 4-9 918250 6.325" 6.30 pounds
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