Hollowtech 12 Magnet Pedal Assist Sensor Ring | Aluminium PAS Disc for Hollowtech Bottom Brackets | E-Bike Conversion Kit Compatible

Hollowtech Magnet Pedal Assist Sensor Ring

Upgrade your e-bike conversion with the MCR Electric Hollowtech 12 Magnet Pedal Assist Sensor Ring, designed specifically for modern Hollowtech crank systems with external bearing bottom brackets.

Manufactured from premium CNC-machined aluminium, this lightweight yet durable magnet ring features 12 high-strength magnets to provide smooth, accurate and responsive pedal assist activation. It's the ideal solution where traditional split PAS discs cannot be fitted, making it perfect for modern MTB, hybrid and road bike cranksets.

Designed to work seamlessly with compatible pedal assist sensors and KT controller systems, this PAS ring is an excellent choice for both new builds and replacement installations.

Features

• ✅ Premium CNC-machined aluminium construction

• ✅ 12 high-strength magnets for precise pedal assist detection

• ✅ Designed specifically for Hollowtech external bearing crank systems

• ✅ Lightweight, durable and corrosion-resistant

• ✅ Provides smooth and reliable pedal assist activation

• ✅ Precision engineered for accurate sensor alignment

• ✅ Ideal where traditional split PAS discs cannot be fitted

• ✅ Compatible with modern MTB, hybrid and road bike cranksets

• ✅ Suitable for DIY e-bike conversions and replacement builds

• ✅ Easy to install and maintain

• ✅ Compatible with KT controller systems and most standard pedal assist sensors

Compatibility

• ✔️ Designed for Hollowtech-style external bearing bottom brackets

• ✔️ Compatible with modern Hollowtech cranksets

• ✔️ Works with compatible pedal assist sensors

• ✔️ Compatible with KT controller systems

• ✔️ Suitable for most e-bike conversion kits using a standard PAS sensor

• ❌ Not compatible with square taper crank systems

Package Includes

• ✔️ 1 × Hollowtech 12 Magnet Aluminium Pedal Assist Sensor Ring

Why choose MCR Electric?

• Quality components tested on our own e-bike builds

• Fast UK dispatch

• Expert technical support

• Trusted by riders across the UK

Whether you're building a new e-bike or upgrading an existing conversion, the MCR Electric Hollowtech PAS Ring delivers reliable, accurate pedal assist performance for a smooth and responsive ride.