{"product_id":"motorcycle-carburetor-modification-kit-pwk21mm-to-pwk34mm-sandblasted-carburetor-for-performance-tuning-on-50cc-to-350cc-engines-compatible-with-kr150-ksr-and-universal-models-supplied-in-a-colour-box-package","title":"Motorcycle carburetor modification kit, PWK21mm to PWK34mm sandblasted carburetor for performance tuning on 50cc to 350cc engines, compatible with KR150 KSR and universal models, supplied in a colour box package.","description":"\u003ch1\u003eMotorcycle Performance Carburetor Modification Kit: PWK21mm to 34mm Sandblasted Units\u003c\/h1\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Sandblasted PWK motorcycle performance carburetor for engine tuning, sizes 21mm to 34mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/566\/2025-10-02\/original-image\/0c1c9453-8687-434f-93f7-561e63a74b9f.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eUpgrading a motorcycle's carburetion is a fundamental step in tuning for increased exhaust flow and engine performance. This modification kit provides a single, sandblasted PWK carburetor, offered across seven precise bore sizes from 21mm to 34mm. It is designed as a direct-fit component for models like the KR150 KSR and other motorcycles already configured for a carburetor system. By selecting the correct bore size matched to your engine's cubic capacity—from small 50cc engines up to 350cc units—you can directly influence the fuel-air mixture for a tailored performance outcome. The kit arrives ready for installation in a protective colour box package, weighing 0.55kg.\u003c\/p\u003e\n\u003ch2\u003eFeatures and Construction\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Sandblasted PWK motorcycle performance carburetor for engine tuning, sizes 21mm to 34mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/566\/2025-10-02\/original-image\/2f892174-62ce-4865-bd5a-3a72c31d3365.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThis kit is defined by its straightforward, single-component offering and the critical choice of bore size. The construction centres on the complete PWK carburetor assembly, which features a sandblasted external finish. This finish provides a uniform, matte texture that can help with grip during handling and may offer a slight resistance to surface scuffs compared to a polished finish.\u003c\/p\u003e\n\u003ch3\u003eMaterial and Build\u003c\/h3\u003e\n\u003cp\u003eThe product is supplied as a fully assembled carburetor. The primary materials are the metallic body, internal brass or aluminium jets, a throttle slide, and associated linkage. The sandblasting process is applied to the external metal surfaces, creating a consistent, non-reflective texture. This is a functional finish rather than a decorative one, aimed at providing a robust surface as part of a performance-focused component intended for engine bay installation.\u003c\/p\u003e\n\u003ch3\u003eSize and Practical Fit\u003c\/h3\u003e\n\u003cp\u003eThe core specification is the carburetor's bore size, directly determining its airflow capacity. The kit offers seven options: 21mm, 24mm, 26mm, 28mm, 30mm, 32mm, and 34mm. Each size is recommended for a specific engine capacity range. The 21mm unit suits 50cc to 100cc engines, the 24mm and 26mm suit 90cc to 125cc, the 28mm suits 125cc to 150cc, the 30mm suits 150cc to 250cc, and the 32mm and 34mm suit 250cc to 350cc engines. This guidance ensures you match the carburetor's flow potential to your engine's displacement for effective tuning.\u003c\/p\u003e\n\u003ch2\u003eUses and Placement\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Sandblasted PWK motorcycle performance carburetor for engine tuning, sizes 21mm to 34mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/566\/2025-10-02\/original-image\/3bc264eb-b0e9-40a6-a6c8-7b8ef9360085.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThis product has a clear, singular use case: as a performance modification component for carbureted motorcycles. It is not a general maintenance item but a direct upgrade path. Its application is most relevant in two broad contexts: specific model tuning and broader small-engine performance projects.\u003c\/p\u003e\n\u003ch3\u003eEvent or Professional Use\u003c\/h3\u003e\n\u003cp\u003eFor mechanics, tuners, or racing teams working on small-capacity motorcycles—particularly in categories like mini-moto, pit bikes, or specific models like the KR150 KSR—this carburetor provides a standardised upgrade component. The availability of multiple bore sizes in the same PWK format allows for quick swaps and testing during dyno tuning or between different race engine builds within the 50cc to 350cc spectrum, where precise carburetion is critical for competitive performance.\u003c\/p\u003e\n\u003ch3\u003eEveryday Home Use\u003c\/h3\u003e\n\u003cp\u003eFor the enthusiast mechanic working in a home garage, this kit offers a documented path to modifying a personal motorcycle. The clear engine capacity matching removes guesswork in selecting a carburetor size for a project bike, scooter, or custom build. It is suited for individuals undertaking engine swaps, big-bore kit installations, or exhaust upgrades on carbureted models, where the stock carburetor may become a bottleneck to increased airflow and power.\u003c\/p\u003e\n\u003ch2\u003eBenefits and Buying Value\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Sandblasted PWK motorcycle performance carburetor for engine tuning, sizes 21mm to 34mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/566\/2025-10-02\/original-image\/48625360-1a5d-4e70-acb1-21f6d3ddefb0.webp\"\u003e\u003c\/div\u003e\n\u003cp\u003eThe value of this kit lies in its specificity and the direct connection between its specifications and a measurable tuning outcome. It avoids being a generic part by providing exact sizing guidance tied to engine capacity, which is a key differentiator for a performance component.\u003c\/p\u003e\n\u003ch3\u003eReuse and Low Maintenance\u003c\/h3\u003e\n\u003cp\u003eAs a durable metal component, a carburetor is designed for long-term service with basic maintenance. Once installed and correctly jetted for your specific engine and conditions, this unit can provide consistent performance. The sandblasted finish may help resist cosmetic wear from vibration and heat cycles in the engine bay. Value is realised through its singular function as a performance-enhancing part that, once fitted, becomes a integral part of the motorcycle's fuel system.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose This Product\u003c\/h3\u003e\n\u003cp\u003eThis kit is chosen for its clear application parameters. It provides a direct solution for riders and builders seeking to increase their motorcycle's exhaust volume and engine performance through carburetor refitting. The value is in the precise matching of bore size to engine capacity, the stated compatibility with the KR150 KSR and universal carburetor models, and the inclusion of all necessary hardware as a single, complete assembly. It serves a specific need within motorcycle modification, offering a functional upgrade based on documented specifications rather than ambiguous performance claims.\u003c\/p\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Sandblasted PWK motorcycle performance carburetor for engine tuning, sizes 21mm to 34mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/566\/2025-10-02\/original-image\/5bb59cd3-793b-46ab-8e09-5a852a43dfda.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Sandblasted PWK motorcycle performance carburetor for engine tuning, sizes 21mm to 34mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/566\/2025-10-02\/original-image\/7d697e6c-8098-47db-a7bf-7cbc6d5d3678.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Sandblasted PWK motorcycle performance carburetor for engine tuning, sizes 21mm to 34mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/566\/2025-10-02\/original-image\/a0c68e46-be73-4bf1-a0bd-45f7dbdbd923.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Sandblasted PWK motorcycle performance carburetor for engine tuning, sizes 21mm to 34mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/566\/2025-10-02\/original-image\/bbfd9b9e-06d0-4fbe-8bc3-7abca83590da.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Sandblasted PWK motorcycle performance carburetor for engine tuning, sizes 21mm to 34mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/566\/2025-10-02\/original-image\/bf40b2a6-0d0d-447d-ba9e-76c57eab610a.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Sandblasted PWK motorcycle performance carburetor for engine tuning, sizes 21mm to 34mm.\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US12\/566\/2025-10-02\/original-image\/dad63ea9-ea36-4b2c-8dd8-ec159657ea87.webp\"\u003e\u003c\/div\u003e","brand":"test55588ut58bqj8","offers":[{"title":"PWK34mm Sandblasting","offer_id":58466387296640,"sku":"CJYD183530707GT","price":49.98,"currency_code":"USD","in_stock":true},{"title":"PWK28mm Sandblasting","offer_id":58466387329408,"sku":"CJYD183530704DW","price":49.98,"currency_code":"USD","in_stock":true},{"title":"PWK30mm Sandblasting","offer_id":58466387362176,"sku":"CJYD183530705EV","price":49.98,"currency_code":"USD","in_stock":true},{"title":"PWK32mm Sandblasting","offer_id":58466387394944,"sku":"CJYD183530706FU","price":49.98,"currency_code":"USD","in_stock":true},{"title":"PWK24mm Sandblasting","offer_id":58466387427712,"sku":"CJYD183530702BY","price":49.98,"currency_code":"USD","in_stock":true},{"title":"PWK21mm Sandblasting","offer_id":58466387460480,"sku":"CJYD183530701AZ","price":49.98,"currency_code":"USD","in_stock":true},{"title":"PWK26mm Sandblasting","offer_id":58466387493248,"sku":"CJYD183530703CX","price":49.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1005\/2678\/4896\/files\/2f892174-62ce-4865-bd5a-3a72c31d3365.webp?v=1784142597","url":"https:\/\/swiftharbor.velnovique.com\/products\/motorcycle-carburetor-modification-kit-pwk21mm-to-pwk34mm-sandblasted-carburetor-for-performance-tuning-on-50cc-to-350cc-engines-compatible-with-kr150-ksr-and-universal-models-supplied-in-a-colour-box-package","provider":"SwiftHarbor","version":"1.0","type":"link"}