{"product_id":"ciloyu-60t-420-sprocket-and-90-link-chain-kit-for-ct200u-mini-bike-40mm-bore-increased-low-speed-torque","title":"CILOYU 60T 420 Sprocket and 90-Link Chain Kit for CT200U Mini Bike — 40mm Bore, Increased Low-Speed Torque","description":"\u003cp\u003e\u003cstrong\u003eCILOYU 60T 420 sprocket and 90-link chain kit is a complete replacement set engineered to boost low-speed torque and traction for CT200U-style mini bikes and similar 4-stroke models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis comprehensive kit replaces the standard 50-tooth rear sprocket and includes a 90-link 420 chain plus assorted installation hardware. Designed for compatibility with a wide range of mini bikes and small off-road models, the kit focuses on making starts stronger, throttle response crisper at low RPMs, and hill-climbing easier without requiring high engine revs.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the larger 60-tooth sprocket affect performance?\u003c\/h3\u003e\n\n\u003cp\u003eFitting the 60-tooth rear sprocket increases the effective gear ratio compared with a 50-tooth unit, which multiplies available torque at the rear wheel. That change helps the engine move the bike more easily from a standstill and provides better traction under load, especially on inclines or loose surfaces.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIncreases low-speed torque versus a 50T sprocket for stronger launches\u003c\/li\u003e\n  \u003cli\u003eReduces the need to rev the engine high to get moving\u003c\/li\u003e\n  \u003cli\u003eImproves traction on mud, sand, and steep grades\u003c\/li\u003e\n  \u003cli\u003eMay lower top speed slightly due to the taller ratio\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this kit fit my mini bike or go-kart model?\u003c\/h3\u003e\n\n\u003cp\u003eThe sprocket has a 40 mm bore and a 60-tooth profile engineered to fit many CT200U-style and similar machines. It lists specific compatible models, but you should verify shaft diameter, bolt pattern, and chain alignment before purchase to ensure a proper fit.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e40 mm bore sprocket — confirm your axle\/shim dimensions\u003c\/li\u003e\n  \u003cli\u003eCompatible with Coleman BT200X, CT200U models, Baja MB165\/MB200 variants, Axis M200 and similar\u003c\/li\u003e\n  \u003cli\u003eAlso compatible with select Monster Moto, Mega Moto, Motovox, and Baja Doodlebug models\u003c\/li\u003e\n  \u003cli\u003eCheck chain type: 420 pitch required for this kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat hardware and extra parts are included in the kit?\u003c\/h3\u003e\n\n\u003cp\u003eIt’s a full service package intended to let you replace both sprocket and chain in a single job. Alongside the 60T rear sprocket and 90-link 420 chain, the kit supplies a smaller 10T sprocket, master links, fasteners, a keyway and a chain breaker for on-the-spot adjustments.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOne 60T 420 rear sprocket with 40 mm bore\u003c\/li\u003e\n  \u003cli\u003eOne 90-link 420 chain and one 42-link 420 chain (for adjustments)\u003c\/li\u003e\n  \u003cli\u003eFive 420 master links, ten screws and ten nuts\u003c\/li\u003e\n  \u003cli\u003eOne 10T front sprocket, one 3\/16\" keyway and one chain breaker tool\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will it change the bike’s handling in everyday riding?\u003c\/h3\u003e\n\n\u003cp\u003eThe larger sprocket helps the bike feel more responsive at lower speeds and reduces wheel slip during aggressive starts or when navigating rough terrain. Riders will often notice smoother takeoffs and more controlled throttle inputs without having to rev the engine excessively.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSharper low-RPM throttle response for city and trail starts\u003c\/li\u003e\n  \u003cli\u003eLess tendency for wheel spin on loose surfaces\u003c\/li\u003e\n  \u003cli\u003eSmoother, more predictable low-speed maneuvering\u003c\/li\u003e\n  \u003cli\u003eSimple to install with supplied fasteners and keyway\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The CILOYU 60T 420 sprocket and 90-link chain kit suits riders who want stronger low-speed performance from small 4-stroke mini bikes, utility trail machines, or entry-level off-road karts. It’s targeted at DIY mechanics and owners of compatible models (Coleman CT200U\/BT200X, Baja MB series, Axis M200, Monster Moto\/Mega Moto, Motovox, Doodlebug variants) who need a full replacement set with the hardware and tools included. Always confirm bore size, chain pitch, and compatibility with your specific axle and sprocket mount before ordering.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the sprocket fit CT200U and similar models?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the 40 mm bore 60T sprocket fits many CT200U-style mini bikes; verify your axle\/bore dimensions and 420 chain pitch first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What comes in the kit for installation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The kit includes a 60T sprocket, 90-link 420 chain, 10T front sprocket, master links, screws\/nuts, keyway, and a chain breaker.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CILOYU","offers":[{"title":"Default Title","offer_id":55168353927511,"sku":"B0FD35M59K","price":77.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/ciloyu-60t-sprocket-front-view.jpg?v=1790401452","url":"https:\/\/britishgarage.co.uk\/products\/ciloyu-60t-420-sprocket-and-90-link-chain-kit-for-ct200u-mini-bike-40mm-bore-increased-low-speed-torque","provider":"British Garage","version":"1.0","type":"link"}