{"product_id":"ciloyu-modified-420-sprocket-40-tooth-40mm-bore-for-ct200u","title":"CILOYU Modified 420 Sprocket 40 Tooth 40mm Bore for CT200U","description":"\u003cstrong\u003eCILOYU Modified 420 40-tooth sprocket with a 40 mm center bore is a direct-fit replacement designed for mini bikes and go-karts using a 420 chain.\u003c\/strong\u003e\n\u003cp\u003eThis heavy-duty aftermarket sprocket replaces worn or mismatched drive gears on a wide range of small off‑road and recreational engines. Built for 420-chain systems, the CILOYU sprocket expands compatibility by offering two mounting bolt circle patterns and additional mounting holes so it works with many Predator, Coleman, Baja, Hensim, Massimo and TrailMaster mini bike models. The design focuses on reliable power transfer, reduced chain wear and simple installation using the included hardware and master links.\u003c\/p\u003e\n\n\u003ch3\u003eWill this sprocket fit my mini bike or go-kart?\u003c\/h3\u003e\n\u003cp\u003eThe sprocket is made to fit 420 chain drive systems and includes a 40 mm center bore. What makes it versatile are two bolt-circle options and extra mounting holes so it matches several engine and hub patterns used across popular mini bike lines.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 420 chain, 40 tooth count for common final drive ratios\u003c\/li\u003e\n  \u003cli\u003eCenter hole diameter: 1.57\" (40 mm) for many hub shafts\u003c\/li\u003e\n  \u003cli\u003e6‑hole bolt circle: 1.93\" (49 mm) center-to-center\u003c\/li\u003e\n  \u003cli\u003e4‑hole bolt circle: 3.15\" (80 mm) center-to-center\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this sprocket affect performance and wear?\u003c\/h3\u003e\n\u003cp\u003eThis larger, reinforced sprocket improves torque delivery and climbing response when paired with appropriate gearing. Precision-cut teeth give smoother engagement which lowers spikes in chain stress and helps extend chain life under normal recreational use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e40T tooth profile tuned for consistent power transfer\u003c\/li\u003e\n  \u003cli\u003ePrecision-machined teeth reduce chain skip and friction\u003c\/li\u003e\n  \u003cli\u003eStronger plate design supports higher torque from larger small engines\u003c\/li\u003e\n  \u003cli\u003eIncludes extra master links to aid chain replacement and alignment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat hardware and accessories are included, and how simple is installation?\u003c\/h3\u003e\n\u003cp\u003eThe kit arrives with all necessary fasteners and spare master links so you can replace the sprocket and reassemble the drive chain without hunting for parts. Installation is straightforward for anyone comfortable removing a wheel and working on a mini bike hub or engine sprocket.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePackage contents: 1× 420 40T sprocket, 5× 420 master link, 10× screws, 10× nuts\u003c\/li\u003e\n  \u003cli\u003eUse the appropriate bolt pattern (4‑hole or 6‑hole) to match your hub\u003c\/li\u003e\n  \u003cli\u003eBasic tools required: sockets, wrenches, chain breaker or pliers for master link\u003c\/li\u003e\n  \u003cli\u003eCheck chain tension and alignment after fitting for safest operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engines and brands are known compatible with this part?\u003c\/h3\u003e\n\u003cp\u003eThe CILOYU sprocket lists compatibility with many popular small-engine and mini bike platforms. Its multi-hole design was created specifically to cover both smaller and larger mini-bike engine mounts and aftermarket hubs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePredator 212cc, 196cc, 200cc and 6.5hp engine conversions\u003c\/li\u003e\n  \u003cli\u003eColeman Powersports CT200U, BT200X, CT100U, CC100X and similar models\u003c\/li\u003e\n  \u003cli\u003eBaja Motorsports (MB165, MB200 series), Hensim MB165\/MB200, Massimo MB200\u003c\/li\u003e\n  \u003cli\u003eTrailMaster MB200 variants, Axis M200, Motovox, Monster Moto, Doodlebug lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? This sprocket is aimed at hobbyists, mechanics and small-vehicle owners who need a robust, multi‑pattern replacement for worn or mismatched 420-chain sprockets. If you run a mini bike, small go-kart or custom Predator-powered project and want a stronger final drive with flexible fitment options and all necessary hardware included, this kit provides a practical upgrade that simplifies installation and reduces drivetrain downtime.\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 this sprocket fit 420 chains only?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the CILOYU sprocket is designed specifically for 420 chain systems and optimizes engagement with that chain size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are the mounting bolts and master link included?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The package includes 10 screws, 10 nuts and 5 master links so you can install the sprocket immediately.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CILOYU","offers":[{"title":"Default Title","offer_id":48087474897054,"sku":"B0FBRP5SHJ","price":39.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ciloyu-sprocket-front-view_a82a3d9e-05e1-431b-9acb-66a1bdcda209.jpg?v=1785924538","url":"https:\/\/northtrailauto.ca\/products\/ciloyu-modified-420-sprocket-40-tooth-40mm-bore-for-ct200u","provider":"North Trail Auto","version":"1.0","type":"link"}