Signature Werks G8X Rear 17" Brake Conversion Kit

Factory G8X M2 M3 M4 rear brakes can only allow down to 18" diameter wheels. This makes it harder to allow larger sidewall tires. With the help of Signature Werks, we've developed a perfect option. We do not want to sacrifice the performance of the braking capabilities. So, we've integrated ZL1 calipers to the rear brake with new rotors as well as a dedicated electronic parking brake. Everything functions like OEM. There is no programming needed.

Once installed, you can run most 17" wheels.

These are not CCB replacements.

Kit includes: Caliper, bracket, rotor, pads, brake lines, parking brake, and hardware.
OEM color options are matched

Lead time is 6-8 weeks.

Signature Werks Brake Kit Warranty & Return Policy

Due to the extreme conditions brakes operate under (heat, fluid exposure, debris, etc.), all sales of our brake kits are final once opened or installed.

• No Returns/Exchanges: Installed kits cannot be returned, exchanged, or refunded under any circumstance.

• No Warranty Coverage: Cosmetic issues (such as paint discoloration, chips, or surface wear) and the natural wear/maintenance needs of calipers, rotors, and pads are not covered under warranty.

• New, Unused Only: Returns are only accepted if the kit is in brand new, unused condition.

This policy follows standard industry practice and applies to all brake kits we sell.