ATI Super Damper Crank Pulley for 4G63 1G/2G DSM (918251)

Description ATI has added a crankshaft damper for the earlier 4G63s to their lineup, designed for higher hp and high-rev applications. Fits 4G63/4G64 engines in the 1990-1999 GVR4 and DSM cars. Replaces both the OEM harmonic balancer and the crankshaft timing/balance shaft sprockets. Please note that these are 12% larger than the OEM damper at 6.325″ diameter, and the timing belt cover will have to be slightly trimmed to clear the ATI inner hub diameter. Stats from ATI: ATI’s Super Damper for Eclipse DSM 4G63T, 4G64T engines Fits 1st Gen Eclipse, Galant, Eagle Talon, and Plymouth Laser High horsepower street & race use Dampens torsional crankshaft vibrations at all RPM levels Protects against engine harmonics 6.325” diameter, 12% overdriven Direct replacement for the stock OEM damper Custom timing gear hub replaces the stock timing gear Stock timing cover must be trimmed for hub clearance Laser-etched timing marks at TDC, 5°, 10°, 15°, 20°, 25°, 30° SFI 18.1 Certified for competition use Shell Material: 6.325″ Aluminum, two 4-rib drives, 12% Overdriven Hub Material: Steel with Timing Gear drive, #916025, 1.263″ Bore Inertia Weight: 2.4 lbs, 3 ring Installation instructions can be found here: https://www.atiracing.com/instructions/Super-Damper.pdf