flow-bench testing

Don't see the MLS head gasket you're looking for

Replaces BMW part # 18107840790

and data logs to prevent wasted dyno time

then the flow rate increases by 25% as well

BMW Motorsport 4.10 Ring and Pinion Gear Set – E46 M3 / E9X M3 / E60 M5 F82 M4 flow-bench testingUpgrade your BMWs performance with the BMW Motorsport 4. 10 Ring & Pinion Gear Setone of the most impactful driveline modifications for the E46 M3, E60 M5 (manual), and E9X M3. This genuine BMW part delivers quicker acceleration by increasing rear end gear ratio, acting as a torque multiplier and reducing time to reach the power band in every gear. Unlike power adders, a ring & pinion gear swap improves performance without adding stress to the engine