MMR Performance | Crank hub capture plate | BMW N55 & S55

At PERON Automotive, engine reliability is at the core of every build. That’s why we strongly recommend the MMR Performance Capture Plate—a simple yet critical upgrade for safeguarding the crank bolt on BMW’s N55 and S55 engines.

The factory crank bolt is known to loosen over time due to the engine’s inherent vibrations and harmonics. Even the slightest loss of torque can cause the timing to slip out of alignment—with potentially catastrophic results.

The MMR Capture Plate solves this issue by fully enclosing and locking the crank bolt head in place, making it physically impossible for it to turn or back out. It can be installed alongside the MMR one-piece crank hub or even on the OEM crank hub, making it an ideal add-on whether you're going for a complete crank hub solution or just adding an extra layer of protection.

Key Features:

• Prevents crank bolt rotation and loosening under engine load

• Compatible with both MMR and OE crank hubs

• Elongated slots for precise, secure fitment every time

• Manufactured from high-strength billet aluminium

• Ideal for high-performance and track-use applications

Protect your engine’s timing and avoid unnecessary risk with this essential upgrade—used and trusted in every PERON-built N55 and S55 powertrain.