51mm motorcycle exhaust pipe modification stainless steel small hexagonal muffler replacement part with 370mm total length, 105mm height, and 51mm interface calibre for bike upgrade projects, available in three specification options.
51mm Motorcycle Exhaust Pipe Modification: Stainless Steel Small Hexagonal Replacement

This motorcycle exhaust pipe modification provides a direct replacement component for riders looking to upgrade or change their bike's exhaust system. It is a stainless steel unit featuring a small hexagonal external design and includes an integrated muffler. With a 51mm interface calibre, it is engineered to connect to existing exhaust pipes of that size. The part's stated dimensions of 370mm in total length and 105mm in height offer a specific fit profile for various motorcycle frames and chassis layouts, making it a practical choice where clearances are a key factor.
Features and Construction

This modification is defined by its measurable specifications and material choice, which dictate its application and installation.
Material and Build
The exhaust pipe is constructed from stainless steel, a material commonly used in automotive and motorcycle exhaust systems. This choice relates to the component's need to withstand high temperatures and exposure to the elements. The design is described as a 'small hexagonal' shape, which refers to the external profile of the pipe section.
Size and Practical Fit
The product's key dimensions are clearly defined: a total length of 370mm, a height of 105mm, and a critical interface calibre of 51mm. The 51mm measurement is the diameter of the connection point where this modification attaches to the motorcycle's existing exhaust header or pipework. These figures are essential for verifying physical compatibility with your specific motorcycle model before purchase and installation.
Uses and Placement

This part serves a specific functional role within a motorcycle's exhaust system and is suited to particular scenarios.
Event or Professional Use
For motorcycle enthusiasts undertaking custom build projects, garage overhauls, or repair work, this modification offers a standardized component. Its availability in different specification options (A, B, C) suggests it may cater to varied performance characteristics, aesthetic finishes, or slight dimensional variations, allowing for a degree of selection based on the project's requirements.
Everyday Home Use
For the home mechanic, this product represents a replacement part to renew a damaged or corroded exhaust section or to alter the bike's appearance and sound profile. The inclusion of a muffler means it is a complete segment, potentially simplifying the upgrade process compared to sourcing separate components.
Benefits and Buying Value

The value of this product lies in its defined specifications and the practical role it fulfills within a mechanical system.
Reuse and Low Maintenance
As a stainless steel component, it aligns with expectations for corrosion resistance and longevity inherent to that material in exhaust applications. This can contribute to a reduction in future replacement needs compared to systems using less durable materials.
Why Choose This Product
This modification is chosen for its precise 51mm fit, its complete muffler-included assembly, and its specific small hexagonal form factor. It provides a concrete solution for riders seeking a bolt-on replacement or modification part where these exact measurements and the included muffler are necessary or desirable for their bike.





