Totota 86 Milltek exhaust +12HP

The factory saw fit to endow the car with a system diameter of just 53.8mm, careful testing led Milltek's engineers to arrive at a bore some 15% larger at 63.5mm, reducing back pressure and improving performance. Mass was also a consideration from the outset, with both Milltek and Litchfield seeking to trim excess weight from the OEM set-up - despite the desire to run a larger diameter bore throughout. The results have been astounding. Two systems will be available upon launch; a secondary cat-back design that is some 4.75kg (23%) lighter than stock, and for those that refuse to compromise, a primary cat-back design that saves more than 8kg (27%) over the standard system.

On a car that is about refinement and light weight, these figures are encouraging - but they mean nothing without tangible power gains to back them up. Thankfully, the numbers here are equally as impressive. Under independent evaluation, the Milltek Sport secondary cat-back system delivered increases of 7.2hp (4%) and 4Nm (2%). With the primary cat-back system, the car was able to produce a much more impressive increase of 11.9hp (6.6%) and 16Nm (7.7%). For a normally aspirated car, these figures are astounding!

Auction is for a full exhaust system removing the secondary cats

Fits BRZ, GT86

Great alternative to the TRD system with more power gains!