{"product_id":"reduction-gear-starter-gy6-chinese","title":"Blue Line 17\/49T Starter Reduction Gear - GY6","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eGet your scooter back to dependable electric starting with the \u003cstrong\u003eBlue Line Starter Reduction Gear for compatible GY6 engines\u003c\/strong\u003e. This stepped, two-stage gear transfers drive through the starter reduction system, making it a practical replacement for a worn or damaged gear. Its 17-tooth upper gear, 49-tooth lower gear and 10 mm center bore give you clear reference points for matching your original part.\u003c\/p\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStarter Drive Replacement:\u003c\/strong\u003e Replaces a worn or damaged reduction gear in a matching electric-start system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-Stage Design:\u003c\/strong\u003e Combines a smaller upper gear and larger lower gear in one stepped assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e17\/49-Tooth Configuration:\u003c\/strong\u003e Matches starter systems using 17 upper teeth and 49 lower teeth.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10 mm Center Bore:\u003c\/strong\u003e Provides a key fitment measurement for comparison with the original gear.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Blue Line\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 1100-1128\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOriginal Parts for Scooters SKU:\u003c\/strong\u003e 164-123\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 3121002\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent:\u003c\/strong\u003e Starter reduction gear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner diameter:\u003c\/strong\u003e 10 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpper gear:\u003c\/strong\u003e 17 teeth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLower gear:\u003c\/strong\u003e 49 teeth\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003cp\u003eFor compatible GY6 125–150cc starter systems and related 157QMJ-based 125cc, 150cc and 169cc applications using the same gear configuration.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eEngine family \/ codes\u003c\/th\u003e\n\u003cth\u003eFitment check\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e157QMJ, 152QMI, YN1P57QMJ, JJ157QMJ, 1P57QMJ, BN157QMJ\u003c\/td\u003e\n\u003ctd\u003eMatch the 10 mm bore, 17\/49 teeth, gear diameters, overall height and starter-drive layout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e161QMK, 1P61QMK, BN161QMK-A\u003c\/td\u003e\n\u003ctd\u003eFor configurations using the matching starter reduction gear; compare the original part before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1P52FMI, 154FMI and other QMI\/QMJ\/QMK configurations\u003c\/td\u003e\n\u003ctd\u003eConfirm the actual starter gear dimensions and tooth configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eEngine code or displacement alone does not establish compatibility. Having “QM” or “FM” in the code is not enough to confirm fitment. Compare your original gear's bore, tooth counts, diameters, height and drive arrangement before ordering.\u003c\/p\u003e\u003ch2\u003eProduct Diagrams\u003c\/h2\u003e\u003cul class=\"az-content-resources\"\u003e\u003cli\u003e\n\u003ca href=\"\/search?view=az-assembly\u0026amp;q=255\"\u003eGY6 STARTER\u003c\/a\u003e \u003cspan\u003eCallout 1\u003c\/span\u003e\n\u003c\/li\u003e\u003c\/ul\u003e","brand":"Blue Line","offers":[{"title":"Default Title","offer_id":67964598681921,"sku":"1100-1128","price":8.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/1100-1128_0c3b45f8-6185-4906-a041-59c4eba7228a.jpg?v=1792945409","url":"https:\/\/azscooterparts.com\/products\/reduction-gear-starter-gy6-chinese","provider":"AZScooterParts","version":"1.0","type":"link"}