Manufactured from 6086-T6 aerospace grade aluminium, Koflach Engine Developments’ N55/S55 crank bolt capture plates are designed to eradicate the all-too common loosening of the crank hub bolt on BMW’s N55 and S55 engines. Designed and machined right here in Sussex, UK, and supplied with 12.9 grade fitting hardware. Hard-anodised in black for a long lasting finish.

Torque bolts to 25lb-ft.

*plain aluminium test piece pictured