Welcome to GT Kraft's Bmw 4 gran coupe series Tuning Specifications page. Here, you can select your Bmw 4 gran coupe series model and generation to access the finest ECU tuning files on the market.
Our engineers are dedicated to developing tuning files that push the boundaries of performance while ensuring the utmost safety. We prioritize quality and reliability, making us the go-to choice for many Bmw 4 gran coupe series owners.
Our services include fast file service for stage 1 & 2, Pop & Bang, stage 3 and 4 projects, and much more. We also specialize in gearbox/TCU tuning for Bmw and other brands. Register now and experience the GT Kraft difference in your Bmw 4 gran coupe series.