Formula 1 bosses have banned the sport's latest must-have technical tweak from next month's British Grand Prix. Governing body ... acceptable in using so-called exhaust-blown diffusers.

This is in large part due to the sound and exhaust muffling being done far up pipe, as Triumph hides their catalytic converter discreetly under the bike. The British Customs Slash Cut Performance ...

Formula 1 bosses have banned the sport's latest must-have technical tweak from next month's British Grand Prix. Governing body ... acceptable in using so-called exhaust-blown diffusers.