Switzerland-based tuner Sportec premiers at the 2013 Geneva Auto Show in 2013 their newest project based on the BMW M135i. Dubbed SB370, the compact sports car comes in a matte black and the racing stripes from BMW Motorsport.
Aside from the painting, visually almost everything remains the same, only the sport exhaust system with titanium tailpipes and the wheels are different from the regular car.
The Sportec alloy wheels are designed in house and measure 19-inch in Y-spoke design, and they are available in semi-gloss black and matt titanium finish. Total price? 1,300 euros per piece. 8.5 (9 × 19) and 9.5 (10 × 19) kilograms per wheel are the weight savings for the SP10 wheel.
More important than the appearance is the power increase. Sportec has two performance kits for the BMW M135i: with Step 1, selling for 2,400 euros, the power output is raised from 320 to 355 hp and maximum torque rises to 510 Nm. These are all achieved through software upgrades.
In stage 2, using downpipe and a 200-cell catalyst, Sportec brings the total horsepower numbers to 370. The investment of 4,300 euros gives the M135i a sprint from 0 to 62 mph in 4.6 seconds and up to a electronically limited top speed of no more 275 km/h.