Royal Enfield Thunderbird 350 / Thunderbird 500 Front Mudguard Assembly “Twilight” (NT51/VT31) – Genuine OEM – 874001

Restore the original factory look of your Royal Enfield Thunderbird 350 / Thunderbird 500 with the Genuine OEM Front Mudguard Assembly – “Twilight” (NT51/VT31), part number 874001. This is the correct painted front fender/mudguard used on the Thunderbird “Twilight” colour set, ideal for crash replacement, rusted/oxidized fender upgrades, or full restoration builds where paint match and mounting accuracy matter.

Unlike many aftermarket mudguards (common issues: uneven curvature, weak mounting points, paint mismatch, vibration rattles), this OEM part is built to Royal Enfield’s original geometry for proper alignment with fork stays and tyre clearance—helping reduce rubbing risk and ensuring clean panel gaps when installed correctly.

Important: 874001 is explicitly listed as “Mudguard-Front – Twilight NT51/VT31” and verified for NTB 350 / NTB 500 (Thunderbird 350/500). 
If your bike is a different colourway (Stone Black, Flicker, etc.), it uses a different part number—don’t order by look alone.

Key Features 

• Genuine Royal Enfield OEM front mudguard / front fender assembly 

• Part Number: 874001

• Colour/Theme: Twilight (NT51/VT31)

• Verified fitment for Thunderbird 350 & Thunderbird 500 (NTB 350/NTB 500) 

• Correct OEM curvature and mounting alignment for factory-style fit

• Ideal for accident replacement, rust/dent repair, or full restoration

• Helps maintain proper splash protection for engine area and rider

• Safer and cleaner than many aftermarket options (fit/paint/rigidity advantages) 

Compatibility Table 

Fitment basis: Listed for NTB 350 / NTB 500 and shown in Thunderbird 350/500 parts catalogue context for Front Mudguard – Twilight (874001). 

PLEASE CHECK PART NUMBER BEFORE PURCHASE 

Variants

• 874001 – Twilight (NT51/VT31) (this listing) 
  (No other variants are included here because other colours/editions use different part numbers.)

FAQs 

1) Will 874001 fit Thunderbird X (TBX)?
Not confirmed from the verified sources used here. To reduce wrong orders/returns, this listing is only for Thunderbird 350 & Thunderbird 500 (NTB 350/NTB 500) as stated. 

2) What does “Twilight / NT51/VT31” mean?
It refers to the factory colour/theme code used on specific Thunderbird variants. 874001 is explicitly listed as Mudguard-Front – Twilight NT51/VT31. 

3) Is this a full mudguard assembly or only a metal strip?
The official naming is Front Mudguard Assy. / Mudguard-Front (assembly). 

4) Does it include bolts / mudguard stays?
NO 

5) I have Thunderbird but a different colour (Stone Black / Flicker). Will this match?
No—874001 is specifically Twilight. Other colourways use different part numbers (order by part number/colour code).