GAS Exhaust Tunnel Brace, B8/B8.5/8RAfter dealing with exhaust clearance issues for years on the B8 B8. 5 platform, we decided to solve the issue for good. Every B8 owner knows the struggle of installing an aftermarket exhaust system just to be met with a loud rattling sound on their first drive. You can space the factory bracket with nuts or washers, but this is a poor solution that greatly reduces body contact and reduces the effectiveness of the brace. Other billet options on the