Royal Enfield Common Key Set (Lock Kit) for Classic 350 ABS & Classic 500 ABS (BS4) | 1040443 (1040443/R)

If your ignition switch feels jammed, your fuel tank cap lock is damaged, or you’ve lost keys and don’t want separate keys for different locks, the Royal Enfield 1040443 Common Key Set is the correct OEM solution. It’s sold as a complete “common key” lock kit, meaning the ignition and other locks in the set are keyed alike so you can run one key for all included locks.

This kit is confirmed for Classic 350 ABS (2017–2019) and Classic 500 ABS (2017–2019) (BS4). It’s an ideal replacement when a bike has had lock tampering, water/corrosion issues, worn tumblers, or when you’re restoring the stock locking system instead of fitting aftermarket caps and switches.

Unlike many aftermarket lock sets, an OEM common-key kit helps ensure correct fitment, smoother operation, and proper engagement with the factory mounting points. Always verify you have the ABS BS4 Classic platform before ordering, because lock sets vary across UCE/J-Series/other generations.

Key Features 

• Genuine Royal Enfield “COMMON KEY SET” part number family: 1040443 

• Widely supplied/listed as 1040443/R for BS4 Classic ABS models 

• Confirmed application: Classic 350 ABS & Classic 500 ABS (BS4) 

• Helps restore single-key convenience across the lock set (common key) 

• Recommended when ignition/fuel cap locks are damaged, jammed, or tampered

• Dealer-listed construction details (where provided): brass/stainless/acetal components 

• Reduces risk of mismatch vs mixing individual lock cylinders

• Best for stock restoration / OEM-correct replacement

Compatibility Table (CHECK PART NUMBER & SOCKET TYPE BEFORE PURCHASE)

BULLET 350 KS ABS - BSIV 

BULLET TRAILS 350

BULLET 500 DISC - BSIV 

BULLET 350 X KS ABS

ETC 

SEND US YOUR BIKE CHASSIS NUMBER FOR PART CONFIRMATION

Explicit Exclusions 

• Not confirmed for Classic 350 Reborn (J-Series), Bullet 350 J-Series, Meteor/Hunter, 650 Twins, Himalayan/Scram.

• If your bike is not ABS BS4 Classic, treat fitment as ❓ Verify.

Variants

• Single variant (OEM lock kit); commonly listed as 1040443/R.

• Note: Royal Enfield may show this “Common Key Set” with different suffix revisions (e.g., 1040443/C, /D, /P, /R) in parts catalogs; buy by confirmed application, not suffix alone. 

FAQs 

Q1) What is part number 1040443 (1040443/R) in Royal Enfield?
It is listed as a “COMMON KEY SET” (lock kit). 

Q2) Which bikes does 1040443/R fit?
Confirmed fitment: Classic 350 ABS (2017–2019) and Classic 500 ABS (2017–2019) (BS4). 

Q3) Is this for BS4 only?
Dealer listings specify BS4 applicability for these Classic ABS models.

Q4) I have Classic 350 Reborn / Bullet J-Series—will it fit?
Not confirmed for J-Series. Order only if you can cross-check your exact lock-set part number (otherwise returns are likely).

Q5) Why buy a “common key set” instead of one lock?
Because the set is designed so the locks match one key, avoiding multiple keys and mismatch issues when replacing only one cylinder.