BMW MMX Performance Crank Hub & Capture Plate (S55)

⚠️ Problem: OE Crank Hub Failure

The OEM three-piece crank hub on the S55 engine is prone to friction plate slippage, especially under high torque or modified conditions. This can cause:

• Timing misalignment
• Piston-to-valve contact
• Costly engine damage if out of warranty

🛠️ MMX Performance Solution

A one-piece billet crank hub paired with a capture plate eliminates these risks:

🔩 Crank Hub Features

• Material: Billet EN36 steel
• Treatment: 0.75mm case hardening for extreme durability
• Design: One-piece construction prevents friction plate slippage
• Reliability: New crank bolt, properly torqued, boosts stability

🛡️ Capture Plate Features

• Material: T-6061 billet aluminium, anodised finish
• Function: Locks the crank bolt head, preventing loosening
• Fitment: Works with MMX or OE crank hubs
• Install: No drilling/modification needed; engine stays in-situ (just drop radiator)

✅ Benefits

• Peace of mind for both stock and tuned S55 setups
• Simplified installation saves time and labor
• Comprehensive protection against one of the S55’s most notorious failure points
• Exceptional value for a premium-grade solution