Innovators West Harmonic Balancer 10 Rib 20% Overdrive (2011-2023 Mustang 5.0/ Shelby GT350) 821

10 Rib 20% OD Front Pulley, 6 Rib STD diameter back pulley SFI 18.1 damper for 2011-up 5.0L Coyote Mustangs. Designed for the Whipple Supercharger 10 Rib System.

• Diameter: 7.884″
• Weight: 8.3 lbs
• 6 Rib Standard Back Pulley
• 10 Rib 20% Overdrive Front Pulley
• Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.

What Makes Innovators West Different?

Inside the light weight billet aluminum cover is a free floating wet friction clutch pack assembly that utilizes spring loaded inertia

rings to dampen crankshaft harmonics over a wide RPM range. The rings work in conjunction with clutches to provide outstanding

dampening action. That action does generate some heat, and we use a small amount of fluid inside that acts as a lubricant as well

as dissipates heat to the outer body.