Professional Products PowerForce Plus SFI 18.1 Harmonic Balancer - 7.300 in OD - Black - Internal Balance - Small Block Mopar 01222 314 lb/in Spring Rate

314 lb/in Spring Rate

The NecksGen tethers are made from high quality fire resistant kevlar webbing and stainless steel buckles

GM Fullsize Truck 2007-08

The internal float is made from a proprietary material

Professional Products PowerForce Plus SFI 18.1 Harmonic Balancer - 7.300 in OD - Black - Internal Balance - Small Block Mopar 01222 314 lb/in Spring RateProduct Description: Harmonic Balancer PowerForce Plus 7. 300 in OD SFI 18. 1 External Steel Black Internal Balance Small Block Mopar Sold Individually The year was 1972, as newly imported automotive brands from Europe and Japan were gaining popularity; the founders of Professional Products entered the racing industry as part of Brock Racing Enterprises. The performance and styling parts company was an off shoot of the Datsun (Nissan) Racing Team.