Important Order Policy
Please order only after confirming the part number, model, variant, year, side, connector type and compatibility. All orders are non-cancellable once placed. Correctly shipped spare parts are not eligible for return, exchange or refund due to wrong selection, wrong diagnosis, fitment mismatch, mechanic recommendation or change of mind. Electrical/electronic items are additionally non-returnable once opened, installed, plugged in, tested or used. Wrong item, damaged item or missing item claims require a complete unboxing video within 24 hours.
Read full Return & Warranty Policy
If your Royal Enfield Thunderbird X has a scratched, bent, leaking, or worn front fork slider, the safest fix is to replace the damaged outer tube (also called fork “lower”, “slider”, or “outer leg”). Royal Enfield 1120015/A is the Fork Outer Tube – RH (Right Hand) used on Thunderbird X 350 and Thunderbird X 500 (BS4 / 2018 platform) as listed in the Thunderbird X exclusive parts catalogue.
This is a Genuine OEM Royal Enfield part, meaning factory-spec material, machining, and fitment—critical for smooth suspension travel, correct oil-seal alignment, and stable braking/handling. Dealer listings commonly show this part as OUTER TUBE-RH / FORK OUTER TUBE-RH under part number 1120015/A.
Best for owners facing: fork oil leaks after a crash/impact, deep scoring where the seal rides, or play due to worn bush contact areas. Replace in pairs (LH+RH) if wear is uneven, and always inspect fork bush, oil seal, and dust seal during rebuild.
Key Features
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Genuine Royal Enfield OEM fork outer tube (right side)
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Part No: 1120015/A (FORK OUTER TUBE-RH / OUTER TUBE-RH)
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Correct RH (Right-Hand) fork slider/lower for Thunderbird X fork assembly
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Restores fork alignment, handling stability, and seal life
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Ideal replacement for impact damage, scoring, corrosion, or seal-seat wear
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OEM machining helps reduce stiction and improves suspension feel versus many aftermarket lowers
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Recommended to change fork oil seal + dust seal + fork oil during installation (service best practice)
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Helps reduce premature fork oil leakage caused by damaged outer tube surfaces
Compatibility Table
| Model |
Engine Type |
BS Stage |
Years (as per catalogue) |
Fitment Notes |
| Royal Enfield Thunderbird X 350
|
UCE 350 |
BS4 |
2018 |
Exclusive parts list shows 1120015/A – Fork Outer Tube RH
|
| Royal Enfield Thunderbird X 500
|
UCE 500 |
BS4 |
2018 |
Exclusive parts list shows 1120015/A – Fork Outer Tube RH
|
⚠️ Not confirmed for standard Thunderbird 350/500 (non-X), Classic/Bullet/Electra, J-Series, 650 Twins, Himalayan/Scram. If your bike is not Thunderbird X, do not order this part.
Variants
FAQs
Q1. What is “Fork Outer Tube RH” in simple words?
It’s the lower fork leg/slider on the right side that holds the fork oil seal, bushings, and mates with the inner tube.
Q2. Will this fit Thunderbird 350/500 (non-X)?
Not confirmed. This part is specifically listed for Thunderbird X 350 / X 500 (BS4 / 2018) only.
Q3. Should I replace fork seals when changing the outer tube?
Yes—best practice is oil seal + dust seal + fork oil, and inspect bushings to avoid repeat leakage.
Q4. Is this OEM or aftermarket?
This is a Genuine Royal Enfield part number listing for 1120015/A.
Q5. Do I need one or two pieces?
This is one side (RH). If both sides are worn/scored, replace LH + RH together.
