Royal Enfield RAN00021 / RAN00021/B – Steering Stem Lock Nut (Handle Tee Nut) for Classic 350 BS3 & Bullet 500 / Bullet Trials 500 Euro IV – Genuine OEM

The Royal Enfield RAN00021 / RAN00021/B Lock Nut is the genuine steering stem lock nut (handle tee nut / T-stem nut) used on Classic 350 BS3 UCE and Bullet 500 / Bullet Trials 500 Euro IV models.

European microfiche suppliers show RAN00021/A – LOCK NUT in the headlight / steering stem assembly for Bullet 500 & Bullet Trials 500 Euro 4, and the official Bullet 500 Euro IV parts PDF notes that previous stem lock nut 110116/D may be superseded by RAN00021/B, tying this upgraded nut directly to the Euro IV Bullet 500 steering stem & headlamp casing group.

This heavy-duty, precision-threaded nut secures the steering stem and top yoke (handle T), keeping front-end play under control and maintaining correct bearing preload. Cheap local nuts can damage threads or loosen over time; using a genuine RAN00021 ensures correct fit, torque and long-term reliability – especially important on older Classics and Bullets that see rough roads or heavy loads.

🔧 Tip: If you feel play in the handle or hear a “khad-khad” from the front, inspect your stem bearings and lock nut together.

Key Features

• Genuine Royal Enfield OEM part – Part No. RAN00021 / RAN00021/B – LOCK NUT, listed in official RE price lists and retired models catalogues.

• Identified by dealers as “LOCK NUT 110116” and “LOCK NUT (STEARING STUM NUT)”, confirming application on the steering stem / handle tee.

• Confirmed OE fitment for Classic 350 BSIII UCE and Bullet 500 / Bullet Trials 500 Euro IV in steering stem / headlamp casing assemblies.

• Supersedes earlier stem lock nut 110116/D in Bullet 500 Euro IV parts documentation, giving you the latest recommended replacement.

• Precision-machined threads for correct torque and bearing preload, helping remove play from the front end and improving steering feel.

• Robust OE-grade steel construction designed to handle Indian road abuse, hard braking and loaded touring without rounding or stripping easily.

• Direct bolt-on replacement on supported models – no modification when used with the original steering stem and top yoke.

• Ideal for restorations, fork rebuilds, head-lamp casing swaps or after a handle T hit / accident.

Compatibility Table 

CHECK PART NUMBER BEFORE PURCHASE 

Variants

• RAN00021 – Lock Nut (original code as seen on UCE Classic 350 BS3 listings).

• RAN00021/A – Lock Nut (seen on Bullet 500 / Bullet Trials 500 Euro 4 steering/headlamp diagrams).

• RAN00021/B – Lock Nut (updated revision; appears in RE price lists and Bullet 500 Euro IV supersession notes).

For your Shopify listing you can sell under a single product “RAN00021 Lock Nut (incl. /A, /B revisions)”, noting that supply may be any genuine suffix depending on latest RE stock.

Contents: Single lock nut only – no washer, no stem, no bearings.

FAQs

Q1. What does the RAN00021 lock nut actually do?
It is the steering stem lock nut (handle T nut). It tightens onto the steering stem above the bearings and clamps the top yoke, setting correct preload and eliminating play in the front end.

Q2. Will this fit my Classic 350 BS4 or Classic 350 Reborn (J-Series)?
RAN00021 is explicitly confirmed only for Classic 350 BS3 UCE. Later BS4 UCE and J-Series Reborn models use updated hardware and different part numbers. Please match the nut on your bike or share your VIN for an EPC check before ordering.

Q3. Is this the same as 110116 / 110116/B / 110116/D?
On Bullet 500 Euro IV, official documentation says “Part 110116/D may be superseded by part RAN00021/B”, meaning RAN00021/B is the recommended updated replacement. For Classic 350 BS3, dealers describe it as “LOCK NUT 110116 – RAN00021”.

Q4. How do I know if my lock nut needs replacement?
Signs include play in the handlebar area, “click” or “khad-khad” sound over bumps, damaged threads, or a rounded nut that can’t be tightened properly. If you’re rebuilding the stem bearings, it’s a good time to replace a worn or abused nut.

Q5. Do I need any special tools to install it?
Ideally use the correct C-spanner / socket for the stem nut so you can torque it without rounding the flats. Always re-check bearing preload after a short test ride.