1983 Yamaha Yz80 - Lower Triple Tree With Ball Bearings on 2040-parts.com

Watch the Audi Sport Quattro tear up the back roads

Audi revealed its 700-hp Sport Quattro concept at the Frankfurt motor show in September; the car pays homage to the classic rallying Sport Quattro from the 1980s. On Monday, the automaker uploaded a video of the upcoming vehicle to celebrate 100,000 Facebook likes on its German social-networking page. The video shows the Quattro whipping and gripping through a forest/mountain stage.

Inside MP4-12C's new McLaren Production Centre

McLaren today opened the doors to its new McLaren Production Centre which will build the MP4-12C and all future supercars from Ron Dennis's fledgling sports car brand. British prime minister David Cameron attended the event, hailing the economic benefits of manufacturing. He said the UK car industry was helping reshape the national economy from a service-based one enriching the minority to one which actually made things again - to the benefit of a wider slice of society.

SEMA buys Performance Racing Industry

The Specialty Equipment Marketing Association (SEMA) on Tuesday finalized plans to purchase Performance Racing Industry, and the transaction will close later this month. John Kilroy, who has experience as editor and associate publisher of PRI Magazine and as vice president of the organization, will continue to lead it. For now, according to representatives from SEMA, it's business as usual.