Our product has been tried and tested by customers worldwide for many years

and vigilance are imperative

Step 2: Tighten to 70 ft-lbs

Why Upgrade Your Valve Springs

- More than 4x longer than a 5lb fire extinguisher bottle

5150 AutoSport High Performance Main Bearing Set, BMW S55 SPRK-2521-2BM-ST Our product has been triedThe 5150 High Performance Coated Main Bearing Set is designed specifically for high performance BMW S55 engines, delivering reliability and power for demanding builds. Each bearing is treated and coated by Calico, significantly reducing friction and enhancing engine efficiency. Calico's unique coating provides superior thermal resistance, making these bearings ideal for high horsepower applications, including high horsepower and racing scenarios.