{"product_id":"ciloyu-35-roller-chain-and-40t-rear-sprocket-kit-37mm-bore-6-hole-mount-for-mini-bikes-heavy-duty-alloy","title":"CILOYU 35 Roller Chain and 40T Rear Sprocket Kit — 37mm Bore, 6-Hole Mount for Mini Bikes, Heavy-Duty Alloy","description":"\u003cp\u003e\u003cstrong\u003eCILOYU's 35 chain paired with a 40-tooth, 37 mm bore rear sprocket is a direct-fit, heavy-duty replacement designed to restore reliable power transfer on compatible mini bikes.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen a worn chain or stripped sprocket is slowing your mini bike, swapping both to a matched CILOYU kit is a straightforward way to regain smooth drivetrain performance. This assembly is engineered for a wide range of small-displacement engines and popular mini bike models, with upgraded mounting holes and a thicker metal alloy for longer life under load.\u003c\/p\u003e\n\n\u003ch3\u003eWhich mini bikes and engines will this chain and sprocket fit?\u003c\/h3\u003e\n\u003cp\u003eThis combo was made to work with many common small-engine mini bikes and aftermarket conversions. It suits Predator 97–100cc clones, Coleman and Baja mini bikes, Motovox models, and select Monster Moto variants when the hub bore and mounting pattern match.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible engines: Predator 97cc, 98cc, 100cc; 2.5–3.0 hp small engines\u003c\/li\u003e\n  \u003cli\u003eModels: Coleman CT100U, CC100X, RB100; Baja Doodle\/DB30 family; Motovox MBX10\/MBX11; Monster Moto Mega Moto\u003c\/li\u003e\n  \u003cli\u003eChain size: ANSI 35 roller chain standard\u003c\/li\u003e\n  \u003cli\u003eSprocket specs: 40 teeth, centre bore 37 mm, mounting hole distance 49 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the improved 6-hole sprocket make installation easier?\u003c\/h3\u003e\n\u003cp\u003eThe sprocket adds a 6-hole mounting pattern with refined spacing so it lines up with a wider variety of hub plates. That reduces the need for time-consuming shims or adapters and helps you mount the part without modification.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSix evenly spaced mounting holes for better alignment\u003c\/li\u003e\n  \u003cli\u003eMounting hole center distance: 1.92\" (49 mm) for common hubs\u003c\/li\u003e\n  \u003cli\u003eDesigned to avoid interference with brake plates and axle hardware\u003c\/li\u003e\n  \u003cli\u003eMachined hole edges for easier bolt insertion during fit-up\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat durability and performance benefits does this kit deliver?\u003c\/h3\u003e\n\u003cp\u003eThe sprocket and chain are constructed from a thicker metal alloy to resist wear, bending, and accelerated tooth loss. The 40-tooth rear sprocket paired with a 35 chain yields a transmission ratio that favors higher top speed and efficient power transfer for varied terrain.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eThicker alloy construction for longer service life under load\u003c\/li\u003e\n  \u003cli\u003e40T sprocket enables faster drive ratio compared with smaller rear sprockets\u003c\/li\u003e\n  \u003cli\u003eRoller chain design reduces friction and improves longevity\u003c\/li\u003e\n  \u003cli\u003eCan improve fuel economy slightly by optimizing gear ratio\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat exact dimensions and specifications should I check before buying?\u003c\/h3\u003e\n\u003cp\u003eMeasure your existing hub and chain before ordering to confirm compatibility. Key dimensions are the centre bore, the mounting hole spacing, and the chain pitch; mismatches are the most common cause of fit issues.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCentre bore diameter: 37 mm (1.45\") — must match hub bore\u003c\/li\u003e\n  \u003cli\u003eMounting hole distance: 49 mm (1.92\") — check bolt circle alignment\u003c\/li\u003e\n  \u003cli\u003eTooth count: 40T rear sprocket\u003c\/li\u003e\n  \u003cli\u003eChain size: ANSI 35 roller chain pitch and width\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Riders, mechanics, and DIY tinkerers who maintain small-displacement mini bikes and need a reliable drivetrain replacement. This CILOYU 35 chain and 40T sprocket suit owners of Coleman, Baja, Motovox, Motormax\/Monster Moto and Predator-powered mini bikes looking for a durable, easy-to-fit rear sprocket and matching chain to restore performance or change gearing. Confirm bore and bolt-circle dimensions before purchase to ensure a correct, hassle-free installation.\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 CT100U mini bike?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If your hub bore is 37 mm and the bolt circle matches 49 mm, this CILOYU sprocket and 35 chain will fit CT100U models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the included chain standard 35 size?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the kit uses an ANSI 35 roller chain compatible with most mini bike drivetrains requiring that size.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CILOYU","offers":[{"title":"Default Title","offer_id":48085319516318,"sku":"B0D95PPTD1","price":39.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ciloyu-front-view-sprocket-and-chain.jpg?v=1785869009","url":"https:\/\/northtrailauto.ca\/products\/ciloyu-35-roller-chain-and-40t-rear-sprocket-kit-37mm-bore-6-hole-mount-for-mini-bikes-heavy-duty-alloy","provider":"North Trail Auto","version":"1.0","type":"link"}