{"product_id":"keihin-idle-pilot-jet-for-pb-cvk-carburetors-gy6-50cc","title":"Keihin Idle Pilot Jet for PB \/ CVK Carburetors - GY6 \u0026 50cc","description":"\u003cp\u003eEliminate rough idling and low-end bogging with a precision-calibrated Keihin Idle Jet. The Keihin Idle Jet (Pilot Jet) controls your scooter's fuel mixture from 0% to about 25% throttle. If your bike struggles to stay running at stoplights or hesitates when you twist the throttle, your idle jet is likely clogged or incorrectly sized. These high-quality brass jets are designed for Keihin PB and CVK style carburetors found on most Genuine 50cc and GY6 50cc scooters. Detailed Model Fitment: Genuine Scooter Co (50cc 2-Stroke): Buddy 50, RoughHouse 50, Rattler 50, Black Cat 50 Chinese GY6 50cc (139QMB): Fits PD18J and CVK style carburetors used on TaoTao, Wolf, Ice Bear, and Bintelli. Carburetor Compatibility: Keihin PB Series and most 18mm-20mm CVK clones. Key Features: Precision Flow: Calibrated internal bore for consistent fuel delivery at low RPMs. High-Grade Brass: Corrosion-resistant material ensures long-term tuning stability. Available Sizes: Select from #38, #40, or #42 to match your specific engine needs. Tuning Tip: If you have upgraded to a performance exhaust or a \"Big Bore Kit,\" you often need to move up one size (e.g., from a #38 to a #40) to prevent a lean condition. Jetting is a process of trial and error. Technical Specifications: Type: Keihin PB \/ CVK Idle (Pilot) Jet Material: Machined Brass SKU: JETKH2\u003c\/p\u003e","brand":"genuine","offers":[{"title":"Default Title","offer_id":48045144572091,"sku":"JETKH2    # 40","price":7.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0719\/1340\/6651\/files\/jetkh2_19783e9a-0047-4187-895e-f3f1a85fac52.jpg?v=1783054981","url":"https:\/\/thriftyscooters.com\/products\/keihin-idle-pilot-jet-for-pb-cvk-carburetors-gy6-50cc","provider":"Thrifty Scooters","version":"1.0","type":"link"}