Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

McLaren 12C GT Sprint fills the gap between the 12C & GT3

McLaren 12C GT Sprint (pictured) debuts at Goodwood FoS McLaren has revealed a track car that’s not quite as focused as the 12C GT3 or the Can Am, but a bit more focused than a regular road-going 12C – the McLaren 12C GT Sprint. Built by McLaren’s race car division, the GT Sprint gets the same 616bhp and seven-speed twin clutch gearbox as the regular 12C but with new oil and cooling systems and a new radiator at the front borrowed from the GT3 car, McLaren has had a play with the suspension on the 12C GT Sprint, lowered it by 40mm and fitted racing slicks to make the Sprint a lot firmer and sharper than its road-going sibling. Cosmetically, the GT Sprint gets a new front bumper, a bonnet that looks like it came of the 12C GT3, bigger air ducts and wing louvres and the option of lightweight bodywork and a carbon fibre rear wing to push the price up if you want to spend more.

Citroen C5 – Model range & new engines

Citroen has added two new engines and tweaked the C5 range The Citroen C5 is a better car than you’d think. It manages to differentiate itself from the German competition – mainly with its different driving dynamics. With its hydroactive suspension it is comfortable in a way no German saloon ever could be, without giving away too much in the handling stakes.

ZF boss thinks 9 speeds is enough for transmissions

The nine-speed transmission might be where the race to add gears ends, ZF Friedrichshafen CEO Stefan Sommer said. He referred to nine speeds as the "natural limit" because going beyond that number adds weight and complexity that cannot be offset by gains in fuel efficiency. "There is no hard line, but you have to consider the law of diminishing returns.