BMW has released an M Performance Power Kit for the F20 125i with N20B20 engine.
It increases the factory 218 hp / 310 Nm to 238 hp / 350 Nm and of course retains the factory warranty. This extra power drops the 0-100 km/h (0-62mph) acceleration from 6.4 to 5.9 seconds, with a top speed of 250 km/h.
It’s priced at 899-999 euro / £750 +VAT, depending on model year and the specific equipment of the 125i. See the product information below: