The Genuine Royal Enfield RAN00021/B Lock Nut is an OEM Handle Top Nut / Steering Stem Lock Nut used in the steering and handlebar assembly of compatible Royal Enfield motorcycles.
This nut is fitted on the steering stem and helps secure the upper steering assembly while maintaining proper front-end fitment. It is an important component when servicing or rebuilding the steering stem and front-end assembly.
Royal Enfield parts listings identify RAN00021/B with the catalogue description “LOCK NUT.” Parts-catalogue references also identify it as the Stem Lock Nut, while current spare-parts listings describe it as a steering stem/handle T nut.
Key Features
- Genuine Royal Enfield OEM part
- Part Number: RAN00021/B
- Catalogue Description: LOCK NUT
- Commonly known as Handle Top Nut
- Also called Steering Stem Lock Nut / Stem Lock Nut
- Used on the steering stem/top handle assembly
- Helps secure the steering and top yoke assembly
- Ideal for OEM replacement and restoration
- Supplied as a single nut
Compatibility
- Royal Enfield Classic 350 UCE
- Royal Enfield Classic 500 UCE
- Royal Enfield Bullet 350 UCE
- Royal Enfield Bullet 500 UCE
- Royal Enfield Electra UCE
Important: Fitment can vary according to model year and steering-stem configuration. Verify the existing part number before ordering. RAN00021/B is specifically documented as a stem lock nut for compatible Royal Enfield applications.
Application
Steering Stem / Handle Top / Top Yoke Assembly
Package Contents
- 1 × Genuine Royal Enfield RAN00021/B Lock Nut
Installation
Professional installation is recommended. Use the correct tool for tightening the steering stem nut and ensure the steering bearings and stem assembly are correctly adjusted after installation.











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