SILMAN LSM3-B Short Punjab Small Mouth Silencer – Matte Black | Classic 350 Reborn & Meteor 350

The SILMAN LSM3-B is a Short Punjab, Small Mouth aftermarket silencer in a clean matte-black finish, intended for Royal Enfield riders who want the compact Punjab-style exhaust look with a tighter outlet instead of the larger Big Mouth design.

This is the correct listing for buyers searching for terms such as Short Punjab silencer for Classic 350 Reborn, Meteor 350 black silencer, small mouth silencer for Royal Enfield, Silman LSM3B, Silmen Short Punjab, black Punjab exhaust, free-flow silencer for Reborn or J-Series short silencer.

Important: This Is Short Punjab, Not Long Punjab

LSM3-B is being listed here as the Short Punjab Small Mouth black silencer. It should not be confused with SILMAN Long Punjab silencers, which are a different exhaust design and use different model references in the market.

The easiest visual difference is the compact Punjab-style body and the small-mouth outlet. Buyers specifically looking for a Long Punjab or Big Mouth exhaust should select the corresponding product instead.

Small Mouth vs Big Mouth – Which One Is This?

This is the Small Mouth version. The outlet opening is narrower than the Big Mouth version. Small-mouth silencers are commonly chosen by riders who want a more traditional, tighter exhaust character rather than the more open visual and acoustic character associated with Big Mouth silencers.

Sound always depends on the complete exhaust system, including the bend pipe, catalytic-converter arrangement, joint sealing and motorcycle condition. No exact decibel level or guaranteed sound note is claimed.

Compatibility

Why Buyers Choose the Short Punjab Small Mouth Design

• Compact Punjab look: shorter visual profile than Long Punjab silencers.
• Small-mouth outlet: traditional narrow-exit appearance.
• Matte-black finish: suits blacked-out and dark-theme motorcycles particularly well.
• Free-flow aftermarket construction: changes the exhaust character compared with the stock silencer.
• Recognisable SILMAN product code: LSM3-B helps distinguish this silencer from similar-looking aftermarket exhausts.

Matte Black Finish

The exhaust is finished in matte black, making it a strong match for motorcycles where the owner wants to reduce chrome and maintain a darker custom theme. The surface is not intended to have the mirror-like appearance of a chrome silencer.

As with aftermarket exhaust products, minor production-batch differences in coating texture, weld appearance, packaging or small hardware can occur.

Free-Flow Exhaust Character

Online market references for the LSM3B describe it as a free-flow Short Punjab silencer. This generally means a more open internal construction than the factory muffler.

A free-flow silencer can change exhaust volume, bass, pulse and throttle feel. The final result depends on the complete exhaust system and cannot be guaranteed from the silencer alone.

This listing does not promise a specific “dug-dug” sound, horsepower increase, mileage increase or exact dB level.

Before Ordering – Please Check

• Your motorcycle model and variant
• Existing silencer inlet diameter
• Mounting-bracket position
• Whether the existing bend pipe / catalytic converter is stock or modified
• Condition of clamp, bush, sleeve and exhaust gasket

If your motorcycle has a modified bend pipe or custom exhaust setup, additional adjustment may be required even when the silencer body is intended for the same motorcycle family.

Installation Guidance

Professional installation is recommended. The mechanic should loosely align the inlet and mounting bracket before fully tightening the system. After installation, check for exhaust leaks, unwanted contact with the swingarm or footrest assembly, and adequate clearance from surrounding parts.

Do not force the silencer into place if the inlet or bracket is visibly misaligned. Verify the application first.

What You Receive

• 1 × SILMAN LSM3-B Short Punjab Small Mouth Silencer – Matte Black
• Adaptor bush / fitting accessory only if supplied inside the manufacturer's packed unit

The Under The Hood keychain visible in product photographs is a size/reference prop and is not included.

Aftermarket Product Notice

This is a SILMAN aftermarket exhaust. It is not a Royal Enfield Genuine / OEM silencer. Internal construction, sound, weight, finish and exhaust flow can differ from the factory-fitted muffler.

Customers who require stock sound, stock emissions configuration and factory-original specification should purchase the correct genuine Royal Enfield exhaust assembly instead.

Road-Use & Compliance Notice

Aftermarket exhaust and noise regulations vary by location. The buyer is responsible for ensuring that the installed exhaust setup complies with applicable local road, noise and emissions regulations.

Frequently Asked Questions

Is LSM3-B a Short Punjab or Long Punjab?
This listing is for the Short Punjab LSM3-B. It is not being sold as a Long Punjab silencer.

Is this Small Mouth or Big Mouth?
This is the Small Mouth version. SILMAN also has larger-outlet / Big Mouth exhaust products, which are different items.

What colour is this silencer?
It is the matte-black version.

Will it fit Classic 350 Reborn?
Yes. Exact online LSM3B references identify it as a Short Punjab Small Mouth silencer for the Royal Enfield Classic 350 Reborn J-Series.

Will it fit Meteor 350?
This stock is intended for the Meteor 350 / Reborn J-Series application. The inlet and mounting arrangement should still be checked before final installation, especially if the motorcycle has a modified exhaust setup.

Will it fit Hunter 350 because Hunter is also J-Series?
Fitment is not claimed for Hunter 350 in this listing. Sharing an engine family does not automatically make the silencer mounting and exhaust arrangement identical.

Will it fit older Classic 350 UCE?
Do not order this LSM3-B J-Series listing for an older UCE motorcycle. Separate Short Punjab versions are sold for UCE models.

Is this Royal Enfield genuine?
No. This is a SILMAN aftermarket product.

Is this a free-flow silencer?
Yes, the LSM3B is sold in the market as a free-flow Short Punjab Small Mouth silencer.

Does a bush come with it?
A bush or fitting accessory may be supplied depending on the manufacturer's packed batch. Only hardware physically present in the packed unit is included.

Buyer Search Terms

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