Royal Enfield Chain Stay Bush (BUSH-CHAIN STAY) for Standard 350/500, Electra 4S | 110643/7 | Genuine OEM

NOW SOLD AS A SET OF 2 PCS FOR FROM 5TH APRIL 2026 

Royal Enfield 110643/7 is the genuine BUSH-CHAIN STAY—a small but important bush used in the chain stay assembly on select legacy Royal Enfield models. OEM catalog sources list it specifically as “BUSH-CHAIN STAY”, and confirm it as a genuine Royal Enfield part (same as factory fitment). 

In practical terms, a chain-stay bush helps maintain correct mounting fit and reduces unwanted play at the chain stay area. If the old bush is worn, hardened, or damaged, it can contribute to looseness, vibration/noise, and faster wear of adjacent parts due to excess movement. This is a high-value preventive replacement during drivetrain/chain stay servicing—especially on older bikes where small rubber/plastic/metal bush parts degrade over time.

SEO + customer clarity note: some sellers wrongly label this as “chain stay brush,” but the correct OE name is chain stay bush. We still include both keywords so customers searching either term land on the right part, while your orders remain technically correct.

Key Features

• Genuine Royal Enfield spare: 110643/7 

• Official part description: BUSH-CHAIN STAY 

• Used in the chain stay assembly on confirmed models (see table) 

• Replaces worn bush to reduce play and improve mounting fit

• Helps limit vibration/noise caused by looseness at the chain stay area (common on older bikes)

• Ideal for restoration + preventive maintenance on legacy platforms

• Unit: 1 piece 

• Packed as genuine spares by dealer source (where applicable) 

Compatibility Table 

PLEASE CHECK PART NUMBER BEFORE PURCHASE 

Variants

• No variants (single part): 110643/7 – BUSH-CHAIN STAY 

FAQs 

1) What is 110643/7 used for?
It is the BUSH-CHAIN STAY used in the chain stay assembly on the confirmed models listed above. 

2) Is this “chain stay brush” or “chain stay bush”?
The OE part name is BUSH-CHAIN STAY. Some sellers label it as “brush,” but order by part number 110643/7 to avoid mistakes. 

3) Will this fit UCE Classic 350/500, J-Series, 650 Twins, Himalayan?
Not confirmed for those platforms by the verified fitment sources. Please match your official parts lookup before ordering.

4) When should I replace this bush?
During chain stay/drivetrain service, or if you see looseness, wear, or degraded bush material at the chain stay mounting points.

5) Is it genuine OEM?
Yes—bike-parts-royalenfield lists 110643/7 as a genuine Royal Enfield part.