Royal Enfield Fork Bottom Tube Lug Cap (Front Fork) | 110121 | Genuine OEM

If your Royal Enfield’s front fork bottom lug is missing its cap, damaged, or leaking grime/water into the lower lug area, this Bottom Tube Lug Cap (Part No. 110121) is the correct Genuine Royal Enfield replacement used on select legacy Bullet-era forks. This is a small but critical finish-and-protection component: it helps close off the lug area neatly, reduces exposure to dust/moisture, and restores the factory-correct appearance after a fork rebuild or restoration.

Unlike many aftermarket caps that vary in thread/seat finish, an OEM-spec cap ensures proper seating and cleaner long-term serviceability during fork maintenance. Ideal for restoration builds, fork overhauls, or replacing rusted/rounded caps on older models.

Important: This part is confirmed for specific older models listed below. If your motorcycle is a newer platform (UCE/J-Series/650 Twins/Himalayan), do not order unless your parts manual lists 110121.

(Part identification as “BOTTOM TUBE LUG CAP” is confirmed in official dealer catalogues.) 

Key Features 

• Genuine Royal Enfield spare: 110121

• Part name: Bottom Tube Lug Cap (front fork lug cap) 

• Helps protect fork lug area from dust/water ingress (restoration-friendly use case)

• Correct OEM seating vs many generic “bottom pipe caps”

• Ideal for fork rebuilds, old Bullet restorations, and replacement of damaged caps

• Clean, factory-style finishing for vintage/legacy forks

• Sold as single piece (order quantity as needed)

• Typically required 2 per motorcycle (one per fork leg) on applicable forks — verify your fork diagram before ordering 

Compatibility Table 

Fitment is listed exactly from a dealer catalogue entry for this part number. 

PLEASE CHECK PART NUMBER BEFORE PURCHASE 

Variants

• Single Piece (110121)

• No LH/RH variant (use quantity as required)

FAQs 

Q1. Is this for Classic 350 Reborn / Meteor / Hunter / 650 Twins?
No. Fitment is not confirmed for those platforms. Order only if your parts manual shows 110121.

Q2. What is this part used for?
It is the front fork bottom tube lug cap used on certain legacy Bullet-era forks.

Q3. How many do I need—1 or 2?
Many forks use 2 caps (one per fork leg), but confirm your fork diagram before ordering. 

Q4. Aftermarket “bottom pipe cap” also fits—should I buy OEM?
If you want correct seating, finish, and restoration-correct fit, OEM is the safer choice for long-term serviceability.