
ATI Super Damper Crank Pulley for 4G63 Evo 4-9 (918250)
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
Features:
• 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
Specs:
• 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 |

Original: $437.39
-65%$437.39
$153.09More Images






ATI Super Damper Crank Pulley for 4G63 Evo 4-9 (918250)
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
Features:
• 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
Specs:
• 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 |

Product Information
Product Information
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Shipping & Returns
Description
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
Features:
• 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
Specs:
• 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 |





















