Genuine Royal Enfield Classic 350 / Classic 500 EFI Rear Mudguard Assembly (Classic Black) with Sticker – 866146

Royal Enfield part 866146 is a genuine OEM rear mudguard (rear fender) assembly finished in Classic Black and supplied with the factory-style sticker set. It’s the correct choice when your stock rear mudguard is dented, rusted, cracked at the mounting points, or when you’re restoring an “Old Classic” to an original look and proper panel gaps.

Unlike many aftermarket mudguards that often use thinner metal, inconsistent paint, and slightly off hole alignment (leading to vibration, misfit, or tyre rub risk), this OEM assembly is built to Royal Enfield’s exact jig dimensions, helping maintain correct clearance, tail section alignment, and an OE finish.

Dealers list this part as fitting Classic 350 and Classic 500 EFI, and it also appears in the Classic 500 Euro 3 exploded diagram as an original part number. 
Note: “BVI” is part of the official description text—please match your bike’s variant/mounting style before ordering.

Key Features 

• Genuine Royal Enfield OEM part: 866146 

• Rear mudguard assembly with sticker (not a plain shell) 

• Factory-style Classic Black finish (OE look) 

• Correct mounting geometry to reduce misfit/vibration vs many aftermarket fenders

• Ideal for accident replacement and restoration builds

• Helps maintain tyre clearance and tail alignment when installed correctly

• Durable metal construction consistent with OEM body panels

• Recommended to verify tail/number-plate bracket style before purchase

Compatibility Table 

ALSO FITS 

CLASSIC 350 ABS BS6 

• PLEASE CHECK PHOTO AND PART NUMBER BEFORE 

Variants

• No variants confirmed for 866146 (single part number / single spec in sources). 

FAQs 

1) Is this a full rear mudguard assembly or only the metal sheet?
It’s listed as REAR MUD.COMP.W/STICKER, i.e., a rear mudguard component/assembly supplied with sticker as per the official description. 

2) Will it fit Classic 350 Reborn (J-Series)?
Not confirmed by any verified source for this part number. Avoid ordering unless you match by VIN/fitment.

3) Does it come with the sticker already applied?
Yes  

4) Why choose OEM over aftermarket mudguards?
OEM typically offers better hole alignment, paint consistency, and correct curvature—reducing fitment issues and repeat labor.

5) What should I verify before ordering?
Confirm your tail/number-plate bracket style and that your bike is within Classic 350 (old/UCE) or Classic 500 EFI / Classic 500 Euro 3 family.