{"product_id":"driven-racing-428-rear-sprocket-for-honda-grom-and-monkey-125","title":"Driven Racing 428 Rear Sprocket for Honda Grom and Monkey 125","description":"Driven Racing EVO TECH rear sprocket for Honda Grom and Monkey 125cc with 428 chain.\u003cbr\u003e \u003cp\u003eDriven Honda Grom and Monkey 125 rear sprockets are available in 34t, 35t, 36t, 38t, 39t, and 40t options. \u003cbr\u003e\u003cbr\u003e\u003cfont color=\"#ff0000\"\u003ePlease Note: 2022+ rear sprockets are not interchangeable with 2021 and earlier model Groms. Choose 34t, 35t, or 36t for 2021 and earlier models. Choose 38t, 39t, or 40t for 2022 and newer models.\u003c\/font\u003e\u003cbr\u003e\u003cbr\u003eThe stock rear sprocket size on the 2021 and earlier Honda Grom is 34 tooth and you can go up to 35t or 36t to increase your low end acceleration. \u003cbr\u003e\u003cbr\u003eThe rear sprocket size on the 2022 Grom is 38t and you can go up to 39t or 40t to increase your low end acceleration. \u003c\/p\u003e\u003cp\u003e\u003cbr\u003eA few rules regarding gear ratios for sprockets are as follows: \u003c\/p\u003e \u003cul\u003e \u003cli\u003eDrop teeth on front\/add teeth to rear = increased torque, increased acceleration, wheelies, racetracks with short straights  \u003c\/li\u003e\n\u003cli\u003eAdd tooth on front\/reduce teeth on rear = increased top end speed, open road cruising, lowers RPMs, better gas mileage, tracks with long straights  \u003c\/li\u003e\n\u003cli\u003e1 down on the front is like adding 3 teeth on the rear  \u003c\/li\u003e\n\u003cli\u003eThe bigger the rear sprocket, the lower the gearing and the faster the acceleration\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e \u003c\/p\u003e \u003cp\u003e\u003c\/p\u003e\u003cul\u003e \r\n\u003cli\u003eAvailable in 34, 35, 36, 38, 39, and 40 Tooth\u003c\/li\u003e\n\u003cli\u003eCase Hardened\u003c\/li\u003e\n\u003cli\u003eFits #428 Chain\u003c\/li\u003e\n\u003cli\u003eInner Diameter: 58mm  \r\n\u003c\/li\u003e\n\u003cli\u003eDiagonal Bolt Spacing: 89mm  \r\n\u003c\/li\u003e\n\u003cli\u003eMade in USA!\u003c\/li\u003e\n\u003c\/ul\u003eHonda CR 80R ('85), Honda CT 70-3Spd ('69-'94), Honda Grom 125, Honda XL 80S ('80-'86), Honda XR 70R ('97-'99), Honda ZB 50 ('88), Various unlisted makes\/models","brand":"Classic Scooters","offers":[{"title":"Default Title","offer_id":47678106468517,"sku":"169-542   38T","price":38.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/2627\/1141\/files\/667477_6b19343e-f63f-4a30-a3bc-ad95271f4af1.jpg?v=1774953828","url":"https:\/\/classicscootersusa.com\/products\/driven-racing-428-rear-sprocket-for-honda-grom-and-monkey-125","provider":"Classic Scooters USA","version":"1.0","type":"link"}