PowerBond Race Serpentine Underdrive SFI 18.1 Harmonic Balancer - 6.770 in OD - Black Powder Coat - Internal Balance - GM LS-Series 2070031 The discs are equipped with

The discs are equipped with metallic paddle/button style friction material providing increased holding capacity

Can be cleaned in the sink or even in the washing machine

BMR's billet aluminum differential bushings replace the entire OE rubber bushing

But remember: these H-Pipes were made for race 5

PowerBond Race Serpentine Underdrive SFI 18.1 Harmonic Balancer - 6.770 in OD - Black Powder Coat - Internal Balance - GM LS-Series 2070031 The discs are equipped withProduct Description: Harmonic Balancer Race Serpentine Underdrive 6. 770 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.