{"product_id":"gy6-125cc-150cc-engines-upgear-set-16x38","title":"GY6 125cc\/150cc Engines Upgear Set 16x38","description":"\u003ch2\u003eGY6 125cc\/150cc Upgear Gear Set for Chinese Scooters\u003c\/h2\u003e\u003cp\u003eThis GY6 125cc\/150cc upgear set uses a 16x38 gear ratio to help your engine perform better. Compared with the standard 13x40 gear set, it gives a 23% increase, which can help with top speed and a wider rev range. It is one of the \u003ca href=\"\/collections\/gy6-150cc-parts\"\u003eGY6 150cc scooter parts\u003c\/a\u003e that can noticeably improve a big bore setup. The kit contains both the countershaft gear and the final drive gear, so it is a good upgrade choice for your scooter.\u003c\/p\u003e\u003ch3\u003eInstallation Needs\u003c\/h3\u003e\u003cp\u003eFitting this upgear set calls for a 12-ton hydraulic press. You need the press to take off the original countershaft gear and to press the new one onto the countershaft. Because the job is fairly involved, getting professional help is strongly advised to make sure it performs as it should.\u003c\/p\u003e\u003ch3\u003ePerformance Gains\u003c\/h3\u003e\u003cp\u003eThis set moves the power band toward higher speeds, so it suits riders who want more output from their GY6 engine. The new ratios provide a smoother acceleration curve, which adds to how the scooter rides overall.\u003c\/p\u003e\u003ch3\u003eSpecs\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRatio:\u003c\/strong\u003e 16x38 (23% upgear over stock 13x40)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront Counter Shaft Teeth:\u003c\/strong\u003e 16\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCounter Shaft Dimensions:\u003c\/strong\u003e Spline Length: 24mm, Outer Diameter: 31.1mm, Overall Length: 60mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRear Final Drive Gear Teeth:\u003c\/strong\u003e 38\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e GY6 150cc (157QMJ) engines, and 157QMJ-based 125cc\/169cc engines by engine code\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eWorks with:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGY6 150cc (157QMJ)\u003c\/li\u003e\n\u003cli\u003e157QMJ-based 125cc, 150cc and 169cc engines (codes 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A, other QMJ\/QMK\/QMI)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eChoosing the right set:\u003c\/strong\u003e Check the engine code on your motor and compare it with the codes above. The set needs a 12-ton hydraulic press for fitting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLocation in the engine:\u003c\/strong\u003e Part #17 on the transmission diagram for the GY6 150cc (157QMJ).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAlternative version:\u003c\/strong\u003e For a different ratio on GY6 125\/150cc scooters, see the \u003ca href=\"\/products\/gy6-125-150cc-scooter-15-36-upgear-set\"\u003eGY6 125\/150cc Scooter 15\/36 Upgear Set\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBrowse further:\u003c\/strong\u003e \u003ca href=\"\/collections\/gy6-150cc-parts\"\u003eGY6 150cc Scooter Parts (157QMJ)\u003c\/a\u003e · \u003ca href=\"\/collections\/gy6-scooter-parts\"\u003eGY6 Scooter Parts\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-engines\"\u003eScooter Engines \u0026amp; Engine Parts\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":51138637201465,"sku":"TT-26482","price":57.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/3358\/9049\/files\/upgear-set-16x38-for-gy6-125cc-150cc-engines-1.jpg?v=1794376486","url":"https:\/\/www.trendtimes.com\/products\/gy6-125cc-150cc-engines-upgear-set-16x38","provider":"Trend Times Toy Stores","version":"1.0","type":"link"}