KXA00643 Royal Enfield Black Passenger Backrest Mounts (Pillion Backrest Arms) for Classic 350 | Genuine GMA

KXA00643 Royal Enfield Black Passenger Backrest Mounts are genuine Royal Enfield GMA backrest arms designed to add a proper, factory-style pillion back support setup on the Royal Enfield Classic 350. These mounts use cast aluminium backrest arms with a powder-coated black finish for durability, and they serve as the structural base onto which the passenger backrest pad is fitted.

This is the right upgrade if your pillion wants better comfort and confidence on daily rides, long highway stints, or stop-and-go city use—without resorting to universal welded backrests that can wobble, rust, or misalign. The OEM-style design keeps the look clean and “Classic-correct,” while providing a sturdy mounting platform.

Important: This product is for mounts only. A compatible backrest pad is required and sold separately: Brown Pad (KXA00644) or Black Pad (KXA00647).

Key Features

• Genuine Royal Enfield GMA accessory (OEM-grade) 

• Part Number: KXA00643

• Cast aluminium backrest arms for strong support 

• Powder-coated black finish for durability 

• Provides the correct mounting structure for Classic 350 backrest pads 

• Clean factory fitment vs typical universal aftermarket backrests

• Helps reduce pillion fatigue by enabling proper lumbar-support pad pairing 

Compatibility Table (models, engine type, BS stage, years)

Only listing what Royal Enfield explicitly declares.

Variants

• Mounts only (KXA00643) – Black passenger backrest mounts (this listing) 

• Required add-on (choose separately):

  • Brown Passenger Backrest Pad – KXA00644 

  • Black Passenger Backrest Pad – KXA00647 

FAQs 

1) What exactly is included in KXA00643?
KXA00643 includes the black passenger backrest mounts/arms (the metal support structure). It does not include the cushion pad. A pad must be purchased separately (KXA00644 brown or KXA00647 black). 

2) Will this fit Classic 350 older UCE models?
Royal Enfield lists the compatibility as Classic 350 on the GMA product page. If your bike is an older generation, confirm using the accessory compatibility lookup / dealer before ordering to avoid mismatch. 

3) Which pad should I buy with these mounts?
Choose based on seat aesthetics:

• KXA00644 (Brown pad): classic brown match 

• KXA00647 (Black pad): stealth / black theme 

4) Why buy OEM mounts instead of a universal backrest?
Universal backrests often compromise fit/finish and may loosen over time. OEM GMA mounts are designed around the bike’s intended mounting points and styling, with cast arms and powder-coating for durability. 

5) Is installation complicated?
Royal Enfield provides fitting instructions for this part number. Best practice is installation by a competent mechanic to ensure correct alignment and fastener torque.