Harrop Engineering has been instrumental in developing intelligent suspension and drive train solutions for endurance and motor racing world wide.

Based on this extensive experience, this complete rear upgrade for the Commodore/GTO IRS range was developed to compliment our upgraded front knuckle and wheel bearing upgrade. For those who are serious about those extra seconds when circuit racing, or those who are after faultless endurance when carrying heavy loads.

Features
- Reworked customer supplied semi trailing arms to suit the fitment of the billet bearing hubs
- Supplied complete with operative park brake assembly
- Utilises the Harrop Axle and CV Joint upgrade
- Standard offset ensures all standard brake upgrades and wheel options are retained