{"product_id":"race-head-v2-146cc-big-bore-kit","title":"Race Head V2 \u0026 146cc Big Bore Kit","description":"The TB Parts Race Head V2 \u0026amp; 146cc Big Bore Kit is a comprehensive performance upgrade designed to enhance engines from China's 120cc and 125cc series. This kit is engineered to provide a significant boost in power and performance, featuring key components like roller rocker arms, which are similar to those found in the KLX110 V2 head.\n\nThis kit includes a 57mm all-aluminum cylinder with a ceramic-plated bore, paired with a matching 57mm high-compression piston, rings, pin, and clips. It also incorporates larger valves, with a 28.5mm intake valve and a 23.5mm exhaust valve, both featuring a 5mm stem. The exhaust port measures 23mm, and the cylinder skirt has an outer diameter of 59mm. A high-performance race camshaft specifically for the Race Head and a head gasket kit are also included.\n\nThe application for this kit is China 120cc and 125cc engines that utilize a 14mm wrist pin. The kit comes complete with all necessary hardware, including the TBW0751 V2 Race head, TBW0821 V2 Head bolt kit, TBW0752 Cam, TBW0754 V2 Head cover set, TBW0414 Cam sprocket, TBW0824 Piston, TBW0862 Top end gasket set, and TBW1069 Cylinder.","brand":"TB Parts","offers":[{"title":"Default Title","offer_id":52663946641720,"sku":"TBW9127","price":599.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687721973.jpg?v=1784331142","url":"https:\/\/store.motormia.co\/products\/race-head-v2-146cc-big-bore-kit","provider":"MOTORMIA","version":"1.0","type":"link"}