Brian Crower Single Valve Springs Steel Retainers Fits Mazda Mzr Duratec 2.3/2.5 on 2040-parts.com

Renault teases extra hot Megane RS

Renault has teased a new, more hardcore version of its Megane Renaultsport coupe on its Facebook page, hinting that the French firm is developing an even more focused version of the sporty hatch to rival the SEAT Leon Cupra 280. The picture appeared with the hastag “#Under8”, meaning the SEAT is a logical target. The Cupra 280 model recently set the front-wheel drive Nurburgring production car lap record with a time of 7 minutes 58.4 seconds.

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.

Volvo S60, V60 & XC60 Polestar Black R – but only in Sweden

Volvo S60, V60 & XC60 Polestar Black R – but only in Sweden Volvo and Polestar’s relationship has recently yielded the new Volvo V60 Polestar with a fulsome 345 bhp and remarkably decent performance. Now, to celebrate Volvo Polestar’s double title (drivers –  Thed Björk - and constructors) in the 2013  Scandinavian Touring Car Championship they’re producing a limited number of Polestar ‘Black R’ models of the S60, V60 and XC60, but only for Sweden. Just like the normal Polestar upgrades, the extra power is more limited than the new V60 Polestar, with the T6 petrol getting 329 horses and the D5 diesel 230, with cosmetic tweaks including Ixion wheels, sports chassis, sports seats, Sensus Connect and more.