The VE and VF Holden Commodore - known in the US as the Pontiac G8 and Chevrolet SS - utilize a heim style joint where the rear upper control arm attaches to the rear hub/knuckle. Known to have a finite service life SuperPro offers a replacement option where the factory offers only a complete knuckle with the new joints pre-fitted. The ability to replace only the heim joints offers a massive savings and restores peak performance.