Toopre Bicycle Crown Race Reducer Adaptor – Straight Fork to Tapered Head Tube (28.6mm to 39.8mm) 45°

Toopre Bicycle Crown Race Reducer Adaptor – Straight Fork to Tapered Head Tube (28.6mm to 39.8mm) 45°

SKU: TP362

Upgrade your bike without replacing your fork. The Toopre Crown Race Reducer Adaptor allows a 1⅛” (28.6mm) straight steerer fork to be installed into a tapered head tube that uses a 1.5″ (39.8mm) crown race. Precision CNC machined from lightweight aluminium alloy, it provides a secure, accurate fit while maintaining proper headset alignment.

Ideal for converting modern tapered frames to accept straight steerer suspension or rigid forks.

This is a two part unit – straight fork crown race and tapered fork crown race that fits together to make a reducer.

Specifications
SKU: TP362
Brand: Toopre
Material: CNC Machined Aluminium Alloy
Finish: Anodized
Colour: Black
Fork Steerer Compatibility: 28.6mm (1⅛”)
Crown Race Diameter: 39.8mm (1.5″)
Bearing Angle: 45°
Thickness: 5mm
Inner Diameter: 29.9mm
Outer Diameter: 51mm
Typical Weight: 12.7g
Applications
Convert a straight steerer fork for use in a tapered head tube
Suitable for MTB, gravel, hybrid and commuter bicycles
Replacement crown race adaptor for compatible tapered headset systems
Ideal for bike upgrades and custom builds
Features
Converts 1⅛” straight steerer forks to 1.5″ tapered headset systems
Precision CNC machined aluminium construction
Lightweight yet durable design
Hard anodized finish for corrosion resistance
Precision 45° bearing contact surface
Easy installation during fork assembly
Provides accurate headset alignment and smooth steering

Compatibility

Compatible with:
Fork Steerer: 28.6mm (1⅛”)
Tapered Crown Race: 39.8mm (1.5″)
45° bearing interface

Please verify your headset dimensions before purchasing.

What’s in the box
1 × Toopre Tapered Fork Crown Race (39.8mm)
1 × Toopre Tapered Fork Crown Race (30.0mm)