HFE Crank Hub Capture Plate | BMW S55 N55 Billet Retention Plate

£109.99

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High Flow Engineering Billet Aluminium Engine Reliability

The HFE Billet Crank Hub Capture Plate is a precision-engineered reliability upgrade for BMW S55 and N55 engines, designed to prevent crank hub movement and crank bolt loosening under high load, hard shifting, or aggressive tuning.

HFE Crank Hub Capture Plate – Secure Your S55/N55 Crank Hub

The BMW S55 and N55 engines are known for crank hub slip, especially on tuned or aggressively driven vehicles. While a capture plate is not a full crank hub solution, it provides a significant improvement in hub retention by locking the OE crank bolt in place and preventing it from backing out or losing clamping force.

The HFE Capture Plate acts as an additional mechanical safety layer, ensuring the crank bolt cannot rotate once torqued. This helps minimise the risk of timing drift, crank hub walk and potential engine damage.

Key Features

  • Crank Bolt Retention: Locks the factory crank bolt in place using a mechanical anti-rotation design.
  • Prevents Hub Walk: Reduces risk of timing movement caused by harmonics, load spikes or misfires.
  • Cost-Effective Reliability: A smart preventative upgrade for both tuned and stock engines.
  • Lightweight & Strong: Engineered to withstand repeated heat cycles and high-RPM stress.
  • Track-Tested: Proven on S55 M3/M4 and N55 M2 builds.

What a Capture Plate Does

A crank hub capture plate is designed to:

  • Stop the crank bolt from loosening under load or vibrations.
  • Maintain clamping force on the OEM crank hub assembly.
  • Reduce the likelihood of crank hub slip on mildly tuned cars.
  • Add mechanical redundancy to the S55/N55 hub design.

Note: A capture plate is a preventative measure but not a replacement for a full crank hub solution on high-power or track-focused builds.

Compatible Engines

  • S55: BMW M3 F80 · M4 F82/F83 · M2 Competition F87
  • N55: BMW M2 (OG) 

Installation Notes

  • Requires removal of crank pulley for installation.
  • Ensure plate sits flush with crank hub before final tightening.
  • Professional installation recommended for N55 & S55 engines.

Technical Specifications

  • Finish: Hard Anodised (Black)
  • Process: CNC-Machined

Why Choose HFE

High Flow Engineering components are designed and tested in partnership with DC Prestige, ensuring OEM+ fitment, premium machining, and real-world reliability for both road and track BMW applications.

Frequently Asked Questions

Q: Does this fix the crank hub issue?
A: No - it reduces the risk but does NOT replace a full 4-pin, 2 pin or keyed crank hub for high-power builds.

Q: Is it safe for tuned vehicles?
A: Yes - it is a recommended upgrade for Stage 1/2 cars and daily-driven S55/N55 vehicles.

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HFE Crank Hub Capture Plate | BMW S55 N55 Billet Retention Plate