ARP Main Stud Kit - BMW S50B30 / S50B32 G12 30-50 mm at the front

30-50 mm at the front and rear

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Precision-tested design for reliable shifting under load

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ARP Main Stud Kit - BMW S50B30 / S50B32 G12 30-50 mm at the frontStrengthen the bottom end of your BMW S50B30 S50B32 engines with the ARP Main Stud Kit BMW S50B30 S50B32, delivering far greater clamping force and sealing than the factory fasteners. Engineered by ARP (Automotive Racing Products), this main stud kit is built to the standards demanded by high performance and motorsport BMW builds. Key Features Designed for BMW S50B30 S50B32 engines Significantly increased clamping force over OEM fasteners Improved