A set of highly polished front pipes that run underneath the engine rather than along each side, in the same way that was used on the BMW SportBoxer that raced at Le Mans this year.

In order to let the engine breathe properly, this version of these pipes are without a catalytic converter and so are for track or off road use. They can also be used in countries where the cat. is not required or where supplies of unleaded petrol are difficult.

Fits to the rear section in the OE way, so it can be used with the OE silencer or any silencer that fits onto the OE front pipes