Motorcycle carburetor performance kit with seven sandblasted PWK sizes from 21mm to 34mm for modifying KR150 KSR and universal bikes to increase exhaust volume and power
Motorcycle Performance Carburettor Kit with Seven PWK Sizes from 21mm to 34mm for Engine Modification

This comprehensive carburettor kit addresses the needs of motorcycle enthusiasts and mechanics undertaking performance modifications on their bikes. Supplied as a refit solution, the set contains seven different PWK carburettor units, each with a sandblasted finish and sized from 21mm up to 34mm. The primary application is for upgrading the KR150 KSR model, though the kit is also listed as suitable for universal motorcycle carburettor installations. The core purpose is straightforward: to increase the engine's exhaust volume and consequently enhance the motorcycle's overall performance through improved airflow and fuel mixture delivery.
Features and Construction

This kit is defined by its range of sizes and its targeted application for motorcycle modification work.
Material and Build
The carburettors feature a sandblasted finish, a process that typically provides a uniform, matte surface texture. The source text specifies the product type as PWK carburettors in this finish across all seven available sizes. As a refit component, each unit is designed to replace an existing carburettor as part of a performance upgrade or tuning project on compatible motorcycles.
Size and Practical Fit
The kit's utility comes from covering multiple carburettor bore sizes: 21mm, 24mm, 26mm, 28mm, 30mm, 32mm, and 34mm. Each size is matched to a recommended engine displacement to guide selection. The 21mm unit is intended for 50cc to 100cc engines, progressing up to the 34mm carburettor which is suited for 250cc to 350cc engines. This range allows the kit to service a wide spectrum of small to mid-sized motorcycle engines commonly involved in modification projects.
Uses and Placement

The product serves a specific niche within motorcycle maintenance and customisation.
Event or Professional Use
For professional mechanics or dedicated amateur builders, this kit provides a selection of carburettors for tuning different engine setups. The clear size-to-displacement guidelines (e.g., 28mm for 125cc-150cc, 30mm for 150cc-250cc) offer a baseline for selecting the appropriate carburettor bore for a given engine build, which is a fundamental aspect of performance tuning to achieve increased exhaust volume and power.
Everyday Home Use
For the home enthusiast working on a personal project bike, such as a KR150 KSR or another universal model, the kit presents a single purchase option containing multiple sizes. This can be practical for testing different carburettor specifications on the same engine or for having spares available for future projects, all aimed at the goal of motorcycle performance enhancement through modification.
Benefits and Buying Value

The value lies in the kit's scope and its focused application for motorcycle performance upgrades.
Reuse and Low Maintenance
As a mechanical component, a carburettor is a reusable part. The sandblasted finish may help in maintaining a clean, oil-free exterior. Having multiple sizes in one kit means that if an engine project changes or if you work on different bikes, you may have a suitable carburettor available without needing to source another unit separately.
Why Choose This Product
This kit is a specific solution for a specific task: modifying a motorcycle's carburetion to increase exhaust volume and performance. It is defined by its seven-size range, its application for the KR150 KSR and universal bikes, and its stated purpose. It provides a tangible selection of components for those engaged in mechanical upgrades, where matching the carburettor size to the engine's cc is a critical step in the tuning process.





