PowerBond Race Serpentine Underdrive SFI 18.1 Harmonic Balancer - 6.220 in OD - Black Powder Coat - Internal Balance - GM LS-Series 4031 Easy to grip screw on

Easy to grip screw on cap with o-ring seal

Mounting is achieved with our exclusive half clamp bar mounts available in most tubing sizes

rods and stems aligned

AFCOs Dual Stage Coil-Over assembly provides variable spring rates that can be used to improve traction and handling in the slickest of conditions

In addition to designing our wide range of after-market headers and exhausts

PowerBond Race Serpentine Underdrive SFI 18.1 Harmonic Balancer - 6.220 in OD - Black Powder Coat - Internal Balance - GM LS-Series 4031 Easy to grip screw onProduct Description: Harmonic Balancer Race Serpentine Underdrive 6. 220 in OD SFI 18. 1 Steel Black Powder Coat Internal Balance GM LS Series Sold Individually PowerBond produces steel harmonic balancers that are designed to outperform conventional harmonic balancers without the weight penalty of many competitive balancers.