BMS JB4 Tuner for S55 BMW M3 F80 M4 F82 F83 & M2 Competition F87 Select JB4 Connection:OBD Wired Connection (Steering Wheel Controls) click here

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High-Flow Design Tested up to 1

6 Flexible fuel - Petrol/Ethanol - 75kW - 1595ccm Hatch 03/2003- 2

9 Grade Strength Class for ultimate strength and safety - Bullet Tip prevents cross-threading (except for 45mm length) - Faster and easier wheel changes - Eliminates the need for balancing the wheel while threading in stock wheel lugs - Black zinc coating for additional strength and corrosion/wear resistance - Allen key insert for easy installation - Fits most BMW models

BMS JB4 Tuner for S55 BMW M3 F80 M4 F82 F83 & M2 Competition F87 Select JB4 Connection:OBD Wired Connection (Steering Wheel Controls) click here2015+ BMW M3 M4 S55 JB4 (F80 F82 F83) Ready to take your turbo M vehicle to the next level? The ultimate tune for your S55 powered vehicle, the JB4 allows you to go from factory stock to full race, and everywhere in between, with the push of a button on your steering wheel. The JB4 installs and removes easily and includes many unique features not found in any other tune including user adjustable 1st and 2nd gear boost limiting, map switching in dash,