This modification requires a custom chip. Kits are sold one per wheel. Kits are sold one per wheel. Rebuilding your calipers is essential for keeping your calipers in peak operating condition Especially for racing.This modification requires a custom chip. Kits are sold one per wheel. Also check out our famous VAC Floor Mount Adapters for Seat Brackets. EIBACH Suspensions for all your BMW Suspension needs. These are also excellent for a combination of street and track use. Sorry, no access to requested story. This kit will also work on 6 cylinder Z3s. Complete with air baffle, orings, and all original hardware.Rebuilding your calipers is essential for keeping your calipers in peak operating condition Especially for racing. This modification requires a custom chip. Kits are sold one per wheel. These are also excellent for a combination of street and track use. Sorry, no access to requested story. This kit will also work on 6 cylinder Z3s. Complete with air baffle, orings, and all original hardware.Rebuilding your calipers is essential for keeping your calipers in peak operating condition Especially for racing. This modification requires a custom chip. Kits are sold one per wheel. Combination of street and track use. Sorry, no access to requested story. This kit will also work on 6 cylinder Z3s. Complete with air baffle, orings, and all original hardware. Rebuilding your calipers is essential for keeping your calipers in peak operating condition Especially for racing.This modification requires a custom chip. Kits are sold one per wheel. Kits are sold one per wheel. Kits are sold one per wheel. Check out our famous VAC Floor Mount Adapters for Seat Brackets. EIBACH Suspensions for all your BMW Suspension needs. These are also excellent for a combination of street and track use. Sorry, no access to requested story. This kit will also work on 6 cylinder Z3s.Complete with air baffle, orings, and all original hardware. Rebuilding your calipers is essential for keeping your calipers in peak operating condition Especially for racing. This modification requires a custom chip. Kits are sold one per wheel. In peak operating condition Especially for racing. This modification requires a custom chip. Kits are sold one per wheel.Calipers in peak operating condition Especially for racing. This modification requires a custom chip.