{"product_id":"protek-rc-aluminum-samurai-rm-s03-r03-carburetor-restrictor-6-5mm-ptk-2518","title":"ProTek RC Aluminum Samurai RM, S03 \u0026 R03 Carburetor Restrictor (6.5mm)","description":"\u003cp\u003eThe ProTek RC Aluminum Samurai RM, S03 \u0026amp; R03 Carburetor Restrictor provides a 6.5mm venturi for tuning engine air flow and power delivery. It is designed for the Samurai 321B and is also compatible with OS V-Spec, Novarossi and RB carburetors.\u003c\/p\u003e\u003cp\u003eChanging the venturi size adjusts the balance between throttle response, top-end power and run time. A larger venturi can increase top-end power for larger tracks, while a smaller venturi can improve bottom-end throttle response and run time.\u003c\/p\u003e\u003cp\u003eFor replacement restrictor O-rings, use ProTek RC part PTK-2517.\u003c\/p\u003e","brand":"ProTek RC","offers":[{"title":"Default Title","offer_id":46316698861802,"sku":"PTK-2518","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/9723\/1338\/files\/PTK-2518_01.jpg?v=1790104058","url":"https:\/\/swflrcr.com\/products\/protek-rc-aluminum-samurai-rm-s03-r03-carburetor-restrictor-6-5mm-ptk-2518","provider":"SWFLRC Raceway","version":"1.0","type":"link"}