{"product_id":"xikoby-rear-sprocket-freewheel-chain-kit-for-razor-mini-bikes-25h-132-link-chain-guide-plates","title":"XIKOBY Rear Sprocket Freewheel Chain Kit for Razor \u0026 Mini Bikes — 25H 132-Link Chain, Guide Plates","description":"\u003cstrong\u003eComplete rear drive upgrade: a heavy-duty sprocket, freewheel, dual chain guide plates and a full 25H chain kit that replaces worn parts on compatible Razor and mini motocross bikes.\u003c\/strong\u003e\n\n\u003cp\u003eWhen your dirt bike's rear drive starts to rattle, slip, or wear out, swapping multiple parts can restore smooth, reliable power transfer. The XIKOBY Rear Sprocket Freewheel Chain Plate Guide Assembly bundles the main rear-drive components—sprocket, freewheel, chain, guide plates, and installation tools—so you can replace the whole system at once. This kit is engineered for compatibility with popular electric and petrol mini bikes, using a 25H pitch drivetrain to match OEM geometries.\u003c\/p\u003e\n\n\u003ch3\u003eWhich bikes and versions does this kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis assembly is designed to replace the rear drive parts on several Razor and mini motocross models. Check your bike’s version number to confirm compatibility before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRazor MX650: compatible with versions 15 and later\u003c\/li\u003e\n\u003cli\u003eRazor MX500: compatible with versions 22 and later\u003c\/li\u003e\n\u003cli\u003eRazor SX500: compatible with versions 1 and later\u003c\/li\u003e\n\u003cli\u003eAlso fits Mcgrath dirt bike, RSF650 pit bike and similar mini moto models with 25H pitch\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat components are included and what are their specifications?\u003c\/h3\u003e\n\u003cp\u003eThe kit supplies the main hardware needed to rebuild the rear drive. Parts are matched by pitch and tooth count so the system runs smoothly together and minimizes setup time.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFull 25H chain, 132 links, with 8 master links for easy sizing\u003c\/li\u003e\n\u003cli\u003e25H 13T motor sprocket included as an extra replacement\u003c\/li\u003e\n\u003cli\u003eRear sprocket with integrated freewheel mechanism and chain plate guides\u003c\/li\u003e\n\u003cli\u003eChain breaker tool and spring-loaded chain tensioner with bearings and lock nut\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this kit improve performance and durability?\u003c\/h3\u003e\n\u003cp\u003eThe assembly focuses on strength and alignment to reduce slippage, premature wear, and drivetrain noise. Material choices and heat treatment boost tensile strength and resistance to abrasion for longer service life under off-road conditions.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-strength steel alloys and heat-treated sprockets resist deformation and wear\u003c\/li\u003e\n\u003cli\u003e80-tooth guide design supports positive chain tracking during acceleration and jumps\u003c\/li\u003e\n\u003cli\u003eChain tensioner maintains alignment and prevents chain drop, increasing safety and uptime\u003c\/li\u003e\n\u003cli\u003eIncluded master links and breaker make chain length adjustment straightforward\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat tools and steps are needed for installation?\u003c\/h3\u003e\n\u003cp\u003eThe kit includes the essential tools for most repairs so you can perform the swap at home or in a small workshop. Basic mechanical skills are recommended, along with common hand tools for wheel removal and torqueing fasteners.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eChain breaker to size the 132-link chain to your bike\u003c\/li\u003e\n\u003cli\u003eMaster links for secure chain rejoining without special press tools\u003c\/li\u003e\n\u003cli\u003eChain tensioner assembly with spring and lock nut for correct tensioning\u003c\/li\u003e\n\u003cli\u003eStandard wrenches and sockets required for sprocket and wheel mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This XIKOBY rear sprocket and chain assembly is aimed at riders, mechanics, and DIY enthusiasts who need a complete rear-drive replacement for Razor MX650\/MX500\/SX500 models and similar mini motocross bikes. It’s especially useful if you want matched components—sprocket, freewheel, guides, and a full 25H chain—delivered together to reduce compatibility issues and installation time. If your bike suffers from chain stretch, noisy freewheel engagement, or frequent chain drop, this kit provides a durable, ready-to-install solution that restores drivetrain function and extends part life.\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: Is the 25H chain already sized for my bike?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The kit includes a 132-link 25H chain; you should use the included chain breaker and master links to trim and fit your specific bike length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this replace both motor and rear sprockets?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The package includes an extra 25H 13T motor sprocket and the rear sprocket\/freewheel assembly, covering both ends of the drivetrain.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"XIKOBY","offers":[{"title":"Default Title","offer_id":48084062306462,"sku":"B0DBYZN6J3","price":67.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/xikoby-rear-assembly-front-view.jpg?v=1785845157","url":"https:\/\/northtrailauto.ca\/products\/xikoby-rear-sprocket-freewheel-chain-kit-for-razor-mini-bikes-25h-132-link-chain-guide-plates","provider":"North Trail Auto","version":"1.0","type":"link"}