The BMW S55 engine is known for its performance, but one critical weak point is the crank hub. If you’re considering an upgrade, you may be wondering: which crank hub is best for the S55? In this guide, we’ll compare the top options and help you choose the best one for your build.

Why Upgrade the S55 Crank Hub?

  • The stock crank hub tends to slip, leading to timing issues.
  • Performance mods increase stress on the OEM design.

An upgraded crank hub provides durability and peace of mind.

Cost Breakdown

Expense Estimated Cost (GBP)
Crank Hub Kits (aftermarket) £550 - £1200
Professional Installation Labor costs £750 - £1050
Additional Parts (Bolts, Gaskets, Chain) £200 - £370
Optional Tuning £480 - £1200


Best Crank Hub Options for BMW S55 in the UK

Insane Performance One-Piece Crank Hub

INSANE PERFORMANCE BMW S55/N55 ONE PIECE CRANK HUB 4 PIN Insane Performance

Material: CNC-machined billet aluminium

Features: One-piece design for improved strength and slip prevention

  • Strong and lightweight billet aluminium construction
  • A one-piece design eliminates the risk of hub slippage
  • Easier installation compared to multi-piece or pinned solutions
  • Suitable for both daily-driven and track-focused S55 builds

MMR Performance One-Piece Crank Hub

MMR Performance One-Piece Crank Hub

Material: High-grade billet aluminum

Features: One-piece design eliminates slip risk

  • Eliminates slip risk with a solid one-piece design
  • Lightweight yet durable construction
  • Easier installation compared to multi-piece solutions
  • Suitable for daily drivers and moderate performance builds

VTT Crank Hub with Capture Plate

VTT Crank Hub with Capture Plate

Material: CNC-machined billet steel

Features: Captures the crank bolt for added security

  • Ideal for high-boost applications and track use
  • More secure than standard one-piece hubs

Evolve Pinned Crank Hub

Evolve Pinned Crank Hub - BMW F87 M2 Competition | F80 M3 | F82 | F84 M4 (S55) - Evolve Automotive

Material: Hardened steel with anti-slip design

Features: Special locking system to prevent rotation

  • EN36 Heat-Treated Material
  • 2 Piece 4 Pin Construction 
  • Good balance of security and ease of installation
  • Works well for both daily drivers and performance builds

Our Recommendation

In our BMW M4 Stage 3 build, we rely on the Insane Performance 2-Pin Connector, and it has been performing flawlessly under extreme conditions. With increased power, higher boost levels, and intense track use, this crank hub has proven its durability and reliability, ensuring everything runs smoothly without any interruptions. If you're pushing your build to the limits, we highly recommend the Insane Performance 2-Pin it's holding up exceptionally well in our setup and continues to deliver the performance we need.