{"product_id":"grehua-420-split-chain-sprocket-42-tooth-for-mini-bike-coleman-ct200u-red-2-piece-aluminum-easy-install","title":"GREHUA 420 Split Chain Sprocket 42-Tooth for Mini Bike Coleman CT200U — Red 2‑Piece Aluminum, Easy Install","description":"\u003cp\u003e\u003cstrong\u003eGREHUA 420 split chain sprocket 42-tooth is a lightweight, easy-to-install replacement sprocket and hub assembly engineered to convert or upgrade mini bikes and go-karts like the Coleman CT200U without removing the axle.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis split sprocket kit pairs a red 42-tooth outer sprocket with a black anodized hub adaptor, offering a convenient way to change gear ratios, reduce rotating mass, and restore worn drive components. Made from aluminum alloy, the set is built to be light yet durable and includes the fasteners needed for mounting. Its split design lets you swap sprockets quickly and experiment with ratios on the trail or in the garage.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the GREHUA split sprocket make gear changes faster?\u003c\/h3\u003e\n\u003cp\u003eThe two-piece (split) design separates the outer sprocket from the hub, so you don't have to slide the axle out to swap gears. That saves time during tuning or repair and minimizes disassembly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSplit outer sprocket for tool-friendly swaps\u003c\/li\u003e\n  \u003cli\u003eIncludes six bolts and nuts for secure attachment\u003c\/li\u003e\n  \u003cli\u003eChange ratios trackside without removing wheel or axle\u003c\/li\u003e\n  \u003cli\u003eDesigned for 420 chain and 42 teeth sizing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich machines and bolt patterns is this sprocket compatible with?\u003c\/h3\u003e\n\u003cp\u003eThe hub is made to suit many small-frame bikes and go-karts that use a 6-bolt wheel pattern and accept a 420 chain sprocket. The center hole and flange pattern match common mini bike models, and minor modifications can expand fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFactory compatibility: Coleman CT200U \/ CT200U-EX, CT100U\u003c\/li\u003e\n  \u003cli\u003eAlso fits: Baja Warrior, Massimo, TrailMaster MB200, Motovox variants\u003c\/li\u003e\n  \u003cli\u003eWorks with a range of 80cc–212cc mini bikes and some go-karts\u003c\/li\u003e\n  \u003cli\u003eCenter hole can be adjusted for DB30 \/ CT100U \/ Motovox applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and design features deliver performance?\u003c\/h3\u003e\n\u003cp\u003eThe hub adaptor is forged from aircraft-style aluminum and the outer sprocket uses a premium alloy to keep weight down without sacrificing durability. Tooth geometry is machined to promote smooth chain engagement and reduce friction under load.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLightweight aluminum construction for lower rotational mass\u003c\/li\u003e\n  \u003cli\u003ePrecision-cut tooth profile for reliable chain tracking\u003c\/li\u003e\n  \u003cli\u003eAnodized finish resists corrosion and wear\u003c\/li\u003e\n  \u003cli\u003eForged hub for a secure clamping surface and long life\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation for a home mechanic?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone familiar with basic mini bike maintenance. The kit ships with the hardware; typical installation requires standard hand tools and around 20–45 minutes depending on model and any minor fit adjustments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eComes with six bolts and six nuts for immediate mounting\u003c\/li\u003e\n  \u003cli\u003eNo axle removal needed on most builds thanks to split design\u003c\/li\u003e\n  \u003cli\u003eRequires basic wrenches and a torque check after fitting\u003c\/li\u003e\n  \u003cli\u003eMinor center-hole modification may be needed for some frames\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This GREHUA 420 split sprocket 42T kit is aimed at mini bike and go-kart owners, hobby mechanics, and small-fleet repair shops that need a reliable, lightweight replacement or upgrade. It's especially useful for riders who frequently test gear ratios, restore older machines, or want a simple way to reduce drivetrain weight without a full wheel removal. If your machine uses a 420 chain and a 6-bolt wheel pattern, this kit provides fast servicing and flexible fitment options.\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: Will this sprocket fit my Coleman CT200U?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the hub and 6-bolt pattern are made to fit Coleman CT200U\/CT100U models. Minor center-hole modification may be required for some variations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to remove the axle to change sprockets?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No — the split sprocket design lets you replace the outer sprocket without removing the axle on most mini bikes.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GREHUA","offers":[{"title":"Default Title","offer_id":48086702751902,"sku":"B0CM22QCZ4","price":55.23,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/grehua-front-view-sprocket-hub.jpg?v=1785902138","url":"https:\/\/northtrailauto.ca\/products\/grehua-420-split-chain-sprocket-42-tooth-for-mini-bike-coleman-ct200u-red-2-piece-aluminum-easy-install","provider":"North Trail Auto","version":"1.0","type":"link"}