Welcome to GT Kraft's Alpina B4 s Tuning Specifications page. Here, you can select your Alpina B4 s 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 Alpina B4 s 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 Alpina and other brands. Register now and experience the GT Kraft difference in your Alpina B4 s.