Looks like Turner have all the supersprint stuff
http://www.turnermotorsport.com/p-19...80mm-tips.aspx" rel="" target="_blank">http://<a href="http://www.turnermot...-tips.aspx</a>
Supersprint has developed this rear muffler for the M235i that fits in place of the stock muffler and gives a more sporty and aggressive exhaust note (when combined with the Supersprint section 2 pipes). Supersprint builds their exhausts from the muffler-forward and tunes each section along the way. They're not just adjusting sound levels and tone but also backpressure and flow. The goal is to achieve power and torque gains in concert with a pleasing sound. This M235i muffler uses 4 80mm exhaust tips to give the back end a more Motorsport theme (like an M3/M4). The stock bumper and valence will require trimming to clear.
Supersprint exhaust is widely recognized as the leader in complete exhaust system upgrades - extremely high quality, well designed for optimal flow, and amazing sound. Even at a premium price Supersprint is an unbeatable exhaust system because every aspect is done to such a high level. A Supersprint exhaust rewards you with a terrific sound, long lasting construction and excellent fitment. The Supersprint sound is very 'European' which fits the sporting sophistication of BMWs perfectly. Most systems are also modular - sections can be added or removed to custom tailor the exhaust sound to your preferance. Aside from 'Race' systems, their mufflers meet European noise laws so you get a refined and tuned sound without being excessively loud. Most Supersprint systems are built with larger diameter piping to improve exhaust flow which helps the engine do less work and make more horsepower! Supersprint exhausts generally run at a premium over other systems but no other system on the market can match their quality, performance, or reputation!