The Powervalve rear silencer set developed for the RS4 V8 (B7) provides a spectacular uplift to the pre-existing dynamic variable sound on the OEM exhaust, and due to the unique way in which we have designed the silencers combined with the variable sound provided by the Powervalve the experience is totally drone free.
The Powervalve rear exhaust silencer set for the Audi RS4 B7 provides you with a perfectly balanced sports tone both externally and internally above the stock exhaus..