2007 Mercedes Benz R350 W251 Rear Harman Kardon Power Subwoofer on 2040-parts.com

2011 Audi R8 GT, an AW first look

Three years after it burst onto the supercar scene, Audi has unveiled a hard-core version of its R8 called the GT. Based on the existing mid-engine R8 V10 and incorporating aerodynamic, weight-saving and mechanical developments used by the company's R8 LMS GT3 race car, Ingolstadt will build just 333 copies of the new 560-hp four-wheel-drive performance flagship. Pricing has not yet been revealed, but given the extent of the changes to the new two-seater, buyers should expect a hefty premium over the R8 V10's $147,000 price tag when the GT goes on sale in North America.

Citroen DS4 Racing – is it a 256bhp Hybrid?

Are Citroen about to reveal a DS4 Racing Hybrid? Citroen look set to reveal the Citroen DS4 R tomorrow, and are promising a 256bhp car. Will this be a sporty DS4 hybrid?

Mopar offers high-performance parts for 2013 SRT Viper

Mopar is introducing a group of high-performance parts for the 2013 SRT Viper, which begins production next month. Braces, coil-overs, exhaust systems and more will be available when the first car rolls off the line. A performance cross car engine X-brace will cost $3,175.