PowerBond Race Harmonic Balancer - GM LS1 Serpentine - Internal Balance Bill Miller Engineering Composites retain their original designed

Composites retain their original designed arch and resist relaxing which yields a longer spring life

replace the plugs

2012-2015 Subaru Impreza Sport Premium

Peterson 700 Series Filters

GFB Hybrid kits include a pair of blanking plugs that allow the valve to be configured for full recirculation venting

PowerBond Race Harmonic Balancer - GM LS1 Serpentine - Internal Balance Bill Miller Engineering Composites retain their original designedThe POWERBOND RACE series brings the advantages of bonded balancers to high revving race and street race applications where an SFI approval is required. Every POWERBOND RACE series balancer features a precision CNC machined AUS 1045 steel centre bonded to an equally strong steel inertia ring. Advanced design means that race series balancers are very light for an all steel product. An most cases they are only marginally heavier than the original cast