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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
F12 / F13 650i
Suitable for racing and high-performance street builds
and rotary ignition modes
We strongly recommend using a high-performance valve spring kit with this option
60mm Valve Lift
ARP Main Stud Kit, BMW M50 M52 S50 S52 BM_BS63_2HS_5453B6H F12 / F13 650iThis ARP Main Stud Kit is designed to replace BMW 11111735525 for the M50 M52 S50 S52 engines that was used in a variety of BMW models, including the E34 E36 chassis. Upgrading from factory main bolts to ARP Main Studs is a simple, yet greatly beneficial upgrade. ARP Main Studs offer the following benefits: Uniform Clamping Force: ARP Main Studs provide a uniform clamping force that OEM bolts cannot. With the improved distribution of pressure across
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