7.425 Super Damper - SFI Duramax 11-Up LM

The ATI Performance 7.425 Super Damper for SFI Duramax 11-Up LM engines is designed to eliminate harmful harmonic vibrations at the crankshaft, which is crucial for diesel engine owners looking to enhance their vehicle's performance beyond factory specifications. This damper is particularly beneficial for those who engage in aggressive tuning, heavy towing, or competitive driving, as it helps maintain the integrity of the drivetrain.

Featuring a proven elastomer-ring design between inner and outer hubs, the damper effectively absorbs resonant energy while ensuring precise timing chain alignment. The 7.425-inch outer diameter is optimized for inertia matching specific to the LM platform, and the SFI 18.1 certification confirms its compliance with competition and street application standards. This construction quality reflects ATI's commitment to durability, utilizing machined billet internals and precision-molded elastomer compounds.

For anyone modifying a 2011-and-later LM Duramax, this damper is an essential upgrade, especially if larger turbos, intercoolers, or ECU tuning have been implemented. The substantial weight of 18 pounds provides effective damping authority without compromising throttle response. Overall, the ATI Performance 7.425 Super Damper is a vital component for enhancing the longevity and performance of your Duramax engine.