Exhaust Pipe Assembly (Down Pipe/Bend Pipe) – Classic 350 Reborn & Bullet 350 J-Series – RLX00513/B (HR Black)

Exhaust Pipe Assembly (Down Pipe/Bend Pipe) – RLX00513/B (HR Black)

Royal Enfield RLX00513/B is the exhaust pipe assembly (commonly called the down pipe / bend pipe / header pipe) finished in HR Black (heat-resistant black). It connects the cylinder-head outlet to the rest of the exhaust system, restoring correct alignment and leak-free sealing when your original pipe is rusted, dented, cracked at the flange, or bent after a fall.

Because exhaust routing and brackets vary across platforms, ordering the correct OEM pipe matters for proper fitment, heat-shield alignment, and avoiding exhaust leaks (popping, soot marks near the port, or reduced pickup). Also searched as: exhaust bend pipe, header pipe, front exhaust pipe, downpipe, OEM exhaust pipe, black exhaust pipe. Before you buy: confirm your exact model/variant and match the pipe shape + mounting points with a photo of your existing part.

Key Features

• Genuine Royal Enfield part: RLX00513/B (factory-correct routing and bends).
• HR Black finish for heat resistance and OEM look on black-themed variants.
• Restores proper exhaust sealing and reduces leak-related noise/soot at the exhaust port.
• Correct mounting geometry helps avoid stress on studs and brackets.
• Ideal replacement for rusted, scraped, or dented down pipes after impact.
• Designed to work with the stock exhaust layout for the confirmed variants listed below.

Compatibility 

Exclusions: Not for Classic 350 UCE (older), Classic 500/350 UCE, Thunderbird UCE, Electra/Standard UCE, or 650 Twins. Always verify by platform.

Variants

No variants (this listing is for RLX00513/B only). If you want the chrome-finish pipe, it is typically a different part number.

FAQs

Q1 (Fitment): How do I confirm RLX00513/B fits my bike?
Match three things: (1) your bike model/variant is in the ✅ list, (2) your platform is J-Series 349cc (not UCE), and (3) the pipe shape + bracket/mount points match your existing pipe. Send a clear photo of the old pipe installed (side view) + the header flange area before dispatch for zero-wrong-order shipping.

Q2 (Fitment): Will this fit other Classic 350 Reborn variants (not listed above)?
Yes it fits Reborn Meteor & New Bullet J Series PART NUMBER CHECK IS RECOMMENDED BEFORE ORDERING 

Q3 (Comparison): RLX00513/B vs chrome exhaust pipe?
RLX00513/B is the HR Black exhaust pipe assembly. Chrome-finish pipes typically use a different part number and may be supplied on different variants. Choose based on your factory finish and matching mounts.

Q4 (Installation): Any precautions while installing an exhaust pipe?
Work on a cold engine. Use correct torque on exhaust studs/nuts, replace crushed gaskets if required, and align all brackets loosely before final tightening to prevent stress. Avoid scratching the HR coating during fitment.

Q5 (Symptoms): What problems does this solve?
Exhaust leak near the port (popping/soot), bent pipe after impact, rattling due to misalignment, rust-through, scraping damage, and poor heat-shield alignment.

Q6 (Returns-prevention): What should I share before you ship?
Share: (1) bike model + year/variant, (2) photo of the current pipe installed (side view), and (3) close photo of header flange area + any mounting bracket points. This prevents wrong-platform (UCE vs J-Series) and wrong-variant orders.

Internal links

• Royal Enfield Classic 350 Reborn Exhaust & Emission Parts
• Exhaust Plate Black 
• Exhaust Pipe Chrome 
• Royal Enfield Bullet 350 (J-Series) Exhaust Parts
• Royal Enfield Exhaust Gaskets, Clamps & Hardware