{"product_id":"primary-gears-doppler-15-50-13-20-cpi-keeway-cgn493975","title":"Primary Gears Doppler 15\/50-13 (+20%) CPI \/ Keeway","description":"\u003cp\u003eDescription Primary gearbox Doppler 15\/50-13 CPI \/ KeewayFrom French manufacturer Doppler: Primary gears 15\/50-13 (+20%) CPI \/ Keeway. Taller gears result in a shorter gear ratio, improving your scooter’s acceleration, while a longer ratio favors top speed. Standard engines usually don’t have enough power to handle a changed ratio, so an upgraded ratio is recommended only for tuned engines. Definitely a solid choice if you want to make better use of your tuned engine’s potential.Primary gearbox: 15\/50Pre-pressed, for original 13-tooth secondary shaft Questions about the product\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: Doppler\u003c\/li\u003e\n\u003cli\u003eSKU: CGN493975\u003c\/li\u003e\n\u003cli\u003eAvailability: In stock\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNotes and Safety Scooter gearboxThe transmission of scooters and some mopeds is located in a case behind the clutch and torque driver and has the function of reducing rpm and ultimately driving the wheel axle.The transmission of a scooter has a direct influence on top speed. If the engine develops enough power and torque at low rpm, you can choose a longer gear ratio to achieve a higher top speed without any noticeable loss in acceleration.Please note: if you don't have a press, better choose pre-assembled gears!\u003c\/p\u003e","brand":"Doppler","offers":[{"title":"Default Title","offer_id":53460641218903,"sku":"CGN493975","price":137.03,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1012\/4027\/5287\/files\/258240_3035790.jpg?v=1777829805","url":"https:\/\/mattmoto.pl\/en\/products\/primary-gears-doppler-15-50-13-20-cpi-keeway-cgn493975","provider":"MattMoto Skutery","version":"1.0","type":"link"}