Remus Exhaust BackBox Upgrade for the A1 1.2TSi, 1.4TSi, 1.4TFSi, 1.6TDi. 
Developed in the Remus performance and sound centres this shows an improvement to the stock set up and a better noise from your exhaust system.
Remember Remus Sportexhaust has won multiple awards in its time.

Remus Backbox Upgrade audi A1 (excl 185ps and S1)