HKK 45mm Long Punjab Small Mouth Silencer for Reborn Classic 350

HKK 45mm Long Punjab Small Mouth Silencer for Reborn Classic 350 is designed for Royal Enfield riders looking for a traditional Long Punjab-style exhaust with a compact 45mm small-mouth configuration. The combination of the Long Punjab profile and small-mouth design makes this silencer suitable for riders building a customized J-Series 350 exhaust setup.

It is intended for compatible Royal Enfield Classic Reborn 350 and Battalion Black J-Series applications. Exact installation depends on the motorcycle variant, bend pipe, inlet connection and mounting arrangement.

Product Highlights

• HKK Long Punjab-style motorcycle silencer
• 45mm small-mouth configuration
• Designed for compatible Royal Enfield J-Series 350 applications
• Suitable for Classic Reborn 350 custom exhaust builds
• Suitable for compatible Battalion Black J-Series applications
• Distinctive traditional Punjab-style exhaust appearance
• Suitable for exhaust replacement and customization
• Professional installation recommended

Product Specifications

45mm Long Punjab Small Mouth Design

The HKK 45mm Long Punjab Small Mouth Silencer for Reborn Classic 350 combines a traditional Long Punjab profile with a smaller 45mm mouth configuration.

For Royal Enfield enthusiasts, the Long Punjab format is often chosen as part of a classic or custom-inspired exhaust build. The smaller mouth gives this particular variant a different visual profile from larger-mouth Punjab silencers in the HKK range.

The 45mm specification should be considered an important product identifier when comparing this silencer with 57mm or 63mm Long Punjab variants.

Compatibility with Classic Reborn 350

This HKK Long Punjab silencer is intended for compatible Royal Enfield Classic Reborn 350 J-Series motorcycles.

Before ordering, check the existing exhaust configuration and bend pipe arrangement. The silencer’s 45mm specification does not by itself guarantee direct installation on every motorcycle because connection dimensions and mounting arrangements can vary between exhaust setups.

For custom installations, an appropriate bend pipe or additional fitting hardware may be required.

Compatibility with Battalion Black J-Series

The silencer is also intended for compatible Royal Enfield Battalion Black J-Series 350 applications.

If your motorcycle is being converted from the factory exhaust to an aftermarket Punjab-style setup, the existing bend pipe and mounting arrangement should be checked before installation.

This is particularly important when changing between different exhaust styles or previously installed aftermarket components.

Why Choose a 45mm Small Mouth Punjab Silencer?

The 45mm Small Mouth configuration gives riders another option within the Long Punjab exhaust style.

It can be a suitable choice when the goal is to create a more traditional custom appearance without selecting one of the larger-mouth Punjab variants.

The most important factors when selecting between different HKK Punjab silencers are:

• Mouth diameter
• Long or short design
• Motorcycle generation
• Bend-pipe compatibility
• Mounting arrangement
• Overall styling preference
• Intended exhaust configuration

Long Punjab Exhaust Style

The Long Punjab profile has a recognizable elongated silencer shape that works particularly well with custom Royal Enfield builds.

The HKK version is designed for riders who want to incorporate this style into a J-Series 350 motorcycle while retaining the distinctive visual character of a Long Punjab exhaust.

Sound characteristics can vary significantly depending on the motorcycle, bend pipe, internal construction, exhaust configuration and installation. Therefore, a specific sound level should not be assumed from the product name alone.

Installation & Fitment

Professional installation is recommended.

Before fitting the silencer, the installer should verify:

1. Exhaust inlet connection
2. 45mm mouth configuration
3. Bend pipe compatibility
4. Mounting bracket location
5. Exhaust alignment
6. Frame and component clearance
7. Joint sealing and fastening

If the existing motorcycle uses a different exhaust configuration, some customization may be required.

Custom Exhaust Applications

The HKK 45mm Long Punjab Small Mouth Silencer can be considered for:

• Classic Reborn 350 custom builds
• Battalion Black J-Series customization
• Aftermarket exhaust replacement
• Traditional Punjab-style exhaust projects
• Custom bend-pipe installations
• Motorcycle styling projects

It can also be considered when replacing an existing aftermarket silencer, provided the connection and mounting configuration are compatible.

45mm vs Larger Punjab Silencers

The 45mm specification differentiates this product from larger-mouth HKK Punjab variants.

When choosing between a 45mm, 57mm or 63mm configuration, riders should not select purely on the basis of diameter. The complete exhaust setup, bend pipe, mounting arrangement and desired appearance should be considered.

A larger mouth does not automatically mean better performance, and no specific horsepower, torque or fuel-economy gain should be assumed without verified testing.

Package Contents

Package generally includes:

• HKK 45mm Long Punjab Small Mouth Silencer — 1 unit

Additional bend pipes, clamps, brackets, reducers, gaskets or other installation hardware should only be considered included when specifically mentioned with the supplied product.

Important Fitment Information

Royal Enfield J-Series motorcycles can have different exhaust configurations depending on the model and the components already installed.

Before purchasing, verify:

• Motorcycle model
• J-Series configuration
• Existing bend pipe
• Silencer inlet connection
• Mounting position
• Available clearance

If you are unsure about compatibility, confirm the exhaust configuration before ordering.

Road-Use Note

Aftermarket exhaust components can be subject to local noise, emissions and vehicle regulations. Customers should verify applicable requirements before using a modified exhaust system on public roads.

Important Question Answers

What is the HKK 45mm Long Punjab Small Mouth Silencer?

The HKK 45mm Long Punjab Small Mouth Silencer is an aftermarket motorcycle exhaust designed around a Long Punjab profile with a 45mm small-mouth configuration for compatible Royal Enfield J-Series 350 applications.

Is the HKK 45mm Long Punjab compatible with the Reborn Classic 350?

It is intended for compatible Royal Enfield Classic Reborn 350 J-Series applications. Exact fitment depends on the bend pipe, inlet connection and mounting arrangement.

Can I use this silencer on a Battalion Black J-Series?

The product is intended for compatible Battalion Black J-Series 350 applications. The existing bend pipe and mounting configuration should be verified before installation.

What does 45mm mean on this Punjab silencer?

45mm refers to the specified mouth/inlet size of this particular Long Punjab Small Mouth configuration. It is an important fitment specification when comparing it with other HKK Punjab variants.

What is a Small Mouth Punjab Silencer?

A Small Mouth Punjab Silencer is a Punjab-style aftermarket motorcycle silencer featuring a smaller mouth configuration. It is commonly selected for custom exhaust styling on Royal Enfield motorcycles.

Is this the same as a 57mm or 63mm Punjab silencer?

No. The 45mm, 57mm and 63mm specifications identify different mouth-size configurations. They should not be treated as interchangeable without confirming the complete exhaust connection and mounting setup.

Does this HKK silencer include a bend pipe?

The product is the silencer. A bend pipe should not be assumed to be included unless it is specifically listed in the product package.

Can I install it with an aftermarket bend pipe?

Yes, provided the bend pipe has a compatible connection and mounting arrangement. Professional installation is recommended for custom exhaust setups.

Will the HKK 45mm Punjab increase horsepower?

A specific horsepower or torque increase should not be assumed. Motorcycle performance depends on the complete exhaust system, engine configuration, tuning and other components.

What sound does the HKK Long Punjab produce?

Sound depends on the motorcycle, bend pipe, exhaust configuration and installation. The exact sound level cannot be reliably determined from the silencer name alone.

Is professional installation required?

Professional installation is recommended to ensure proper alignment, mounting, clearance and exhaust-joint sealing.

Is this exhaust road legal?

Road-use requirements vary according to local laws and vehicle regulations. Verify applicable noise, emissions and modification requirements before using an aftermarket exhaust on public roads.

Frequently Asked Questions