Genuine Royal Enfield Silencer Assembly Kit for Thunderbird 350 / Thunderbird 500 (NTB) | 888209

Replace a rusted, dented, or internally-broken exhaust the correct way with the Genuine Royal Enfield Silencer Assembly Kit – Part No. 888209, listed as “Silencer Assembly kit TB350 & 500” for the Thunderbird platform. 

This is the OEM silencer kit intended to restore factory-like fitment, backpressure and exhaust note without the common issues seen with generic aftermarket mufflers (misaligned mounts, leakage at joints, harsh resonance, early rust). On older Thunderbirds, a tired silencer can cause excessive noise, reduced pickup, rattling baffles, and visible corrosion, especially if the bike has seen rain or long highway use.

Royal Enfield’s Thunderbird parts catalogue shows 888209 as “Silencer Assembly Kit TB 350 / 500 cc” and indicates the silencer assembly is served in the kit (Ref A2), supporting that this is a genuine kit-level replacement rather than a random universal can. 

This listing is deliberately restricted to only the models confirmed below. If your bike is not a Thunderbird 350/500 (NTB), do not order unless your microfiche/parts diagram matches 888209.

Key Features 

• Genuine Royal Enfield part (OEM-spec) 

• Part Number: 888209 

• Official description: Silencer Assembly kit TB350 & 500 

• Direct-fit silencer kit for Thunderbird platform (confirmed models below) 

• Restores stock-style mounting alignment and joint sealing (helps prevent leaks/rattles)

• Ideal replacement for rusted/dented silencer or failed baffles

• Helps maintain a balanced exhaust note (not an “open loud” aftermarket can)

• Installation note: use new clamps/gaskets if worn; verify joint sealing after fitment

Compatibility Table (PLEASE CHECK PART NUMBER BEFORE PURCHASE)

Variants

• Single SKU: 888209 (Silencer Assembly Kit TB350 & TB500)

FAQs 

Q1. What is Royal Enfield part 888209?
It is the Silencer Assembly Kit for Thunderbird 350 & Thunderbird 500 (TB350 & 500). 

Q2. Does this fit both Thunderbird 350 and Thunderbird 500?
Yes—dealer listings and the Thunderbird parts catalogue show TB350 / TB500 applicability. 

Q3. Is this a genuine OEM part or aftermarket?
It is listed as a genuine Royal Enfield part by microfiche-style genuine parts sellers. 

Q4. Will it fit Classic/Bullet/Electra or J-Series bikes?
Not confirmed for those models. Order only if your parts diagram/microfiche calls for 888209.

Q5. What should I replace along with the silencer?
If clamps, gaskets or mounting rubbers are worn, replace them to avoid leaks and rattles after installation.