LSX 6-Rib Harmonic Damper for F-Body & GTO – 10% Underdrive #831
SFI 18.1 Harmonic Damper for GM 98-02 LS1 F-Body & 04-06 LS1/LS2 GTO – w/ Crank Bolt. Features 6 Rib drive & 10% underdrive diameter pulley.
Underdrive dampers are for use on Naturally Aspirated engines making 700hp or less. For engines making over 700hp, please use a standard diameter damper for greater dampening capability.
This damper comes standard with 3/16″ Keyway for use with aftermarket crankshafts..
NOTE: Innovators West specific pin kit required when used with a stock non-keyed crankshaft.
- Diameter: 6.5″
- Weight: 7.8 lbs
- Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.
2 in stock