Big Block Chevy (BBC) 7" External Balanced Harmonic Damper

Externally Balanced Harmonic Damper for High Performance Big Block Chevys with SFI 18.1 Rating for the highest quality. The 104X Damper features an all aluminum case design for light weight, stress-proof steel hub and 1040 steel inertia rings for durability. Wet clutch friction design style with precision machined harmonic dampening for street and race engines.

• For External Balance Applications Only


• Comes with Single 3/16" Keyway


• Exceeds SFI 18.1 standards and is marked on front with SFI Sticker, and on the rear with SFI number stamped into unit.