{"product_id":"gy6-big-bore-builds-s-1-high-power-camshaft","title":"GY6 Big Bore Builds S-1 High Power Camshaft","description":"\u003ch2\u003eHigh-Output Camshaft for GY6 4-Stroke Engines\u003c\/h2\u003e\u003cp\u003eThe TFC Special S-1 High Angle Camshaft is built for GY6 engines with big-bore setups, specifically those running cylinder bores from 58.5mm to 63mm. It raises valve lift to 6mm, which allows more air and fuel to enter the engine and helps power build at higher RPM. It is one of the \u003ca href=\"\/collections\/gy6-scooter-parts\"\u003eGY6 scooter parts\u003c\/a\u003e you can use to get the most out of an upgraded engine.\u003c\/p\u003e\u003ch3\u003ePerformance Characteristics\u003c\/h3\u003e\u003cp\u003eThe S-1 uses a distinct profile designed for high-performance use. Its valves stay open longer and lift higher, which makes it a strong choice for riders who have fitted a big bore kit and want the most from it. For the best results, pair this cam with a high-flow cylinder head, a performance exhaust, and an upjetted carburetor.\u003c\/p\u003e\u003ch3\u003eInstallation and Compatibility\u003c\/h3\u003e\u003cp\u003eThe S-1 Camshaft works with GY6 QMI\/QMJ 152\/157 4-stroke engines that have been fitted with big bore cylinders. Keep in mind that this cam does not suit stock 57mm bore engines, since its aggressive lift profile is made for larger displacement builds. For strong results, avoid running it with a stock head and stock jetting, as those parts may limit the gains.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCam Profile:\u003c\/strong\u003e TFC Special S-1 high angle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValve Lift:\u003c\/strong\u003e 6mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntake Lobe Diameter:\u003c\/strong\u003e 26.75mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust Lobe Diameter:\u003c\/strong\u003e 26.35mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCam Gear Teeth:\u003c\/strong\u003e 34\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCam Bearing:\u003c\/strong\u003e 6002C3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Fitment:\u003c\/strong\u003e 58.5mm–63mm cylinder bores\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e GY6 QMI\/QMJ 152\/157 4-stroke engines (125cc\/150cc) with 58.5mm to 63mm big bore cylinders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits:\u003c\/p\u003e\u003cul\u003e\u003cli\u003eGY6 QMI\/QMJ 152\/157 4-stroke engines (125cc\/150cc) with 58.5mm to 63mm big bore cylinders\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Confirm your cylinder bore falls between 58.5mm and 63mm. This cam is not intended for stock 57mm bore engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShop more:\u003c\/strong\u003e \u003ca href=\"\/collections\/gy6-scooter-parts\"\u003eGY6 Scooter Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/chinese-scooter-parts\"\u003eChinese Scooter Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-cylinder-kits\"\u003eScooter Big Bore \u0026amp; Cylinder Kits\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-cylinder-heads\"\u003eScooter Cylinder Heads \u0026amp; Valves\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eScooter Parts\u003c\/a\u003e\u003c\/p\u003e","brand":"Trend Times Toy Stores","offers":[{"title":"Default Title","offer_id":51134446993465,"sku":"TT-15735","price":115.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/s-1-high-power-camshaft-for-gy6-big-bore-builds-1.webp?v=1794344054","url":"https:\/\/www.trendtimes.com\/products\/gy6-big-bore-builds-s-1-high-power-camshaft","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}