Shelby GT500 5.4L/5.8L Harmonic Balancer 10% Overdrive #827


SFI 18.1 Harmonic Balancer for Ford Shelby GT500 with 10% Overdrive Pulley.

  • Diameter: 7.95″
  • Weight: 11.2 lbs
  • Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.


Double 3/16" Keyway Add On

Add an additional 3/16 Keyway to your Damper. Required the crankshaft to be machined for a second keyway 180* out from the original keyway. *Requires damper purchase. This is a labor option for new damper purchase only.