Looks like ALTA has just officially released their R56 Exhaust system:

ALTA Performance is pleased to announce the release of the new R56 twin tip exhaust system. Made from 304 stainless steel, the ALTA R56 exhaust system is fully polished for a show-stopping shine including the pipes, mufflers and tips. The Perfect way to show off your attention to detail and catch the eye of other mini owners. The ALTA R56 exhaust system features mandrel-bent 3î tubing and V band flanges for faster turbo spooling and increased low end power. Designed with sound in mind, the ALTA system has a very very mellow tone that will make you want to motor.

[ ALTA R56 Exhaust ]