SKU: ATI918582
MPN: 918582
The Nissan SR-2 5.5 Harmonic Damper from ATI PERFORMANCE is a precision-engineered component designed to eliminate destructive crankshaft vibration in high-performance and modified SR20 engines. This SFI-certified damper is essential for any builder or enthusiast running increased boost, aggressive cam profiles, or extended RPM ranges where stock dampening becomes insufficient.
The harmonic damper works silently in the background, protecting your entire drivetrain from resonance harmonics that can crack cranks, loosen fasteners, and shorten engine life. ATI's 5.5-inch damper utilizes a tuned elastomer core wrapped in a precision-machined steel ring, calibrated specifically for the SR20 engine's harmonic signature and intended RPM band.
This damper is ideal for Nissan 200SX, Silvia, and SR20-swapped chassis owners pursuing reliability at high horsepower levels. The larger diameter provides optimal inertial mass distribution, effectively attenuating vibrations generated by the SR20's four-cylinder firing order, making it a non-negotiable upgrade for serious tuners and track-focused builds.
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