{"product_id":"rk-428-mxz-4-heavy-duty-motocross-chain-120-links-part-gb428mxz4-120","title":"RK 428 MXZ\/4 Heavy-Duty Motocross Chain, 120 Links, Part GB428MXZ4-120","description":"428 MXZ\/4 - Heavy Duty Chain - 120 Links\n\u003cp\u003eThe RK 428 MXZ\/4 Heavy-Duty Chain is designed for serious motocross racing and demanding off-road applications. Manufactured by RK using high-performance materials and construction methods, this 120-link chain delivers dependable strength, durability, and power transfer under intense riding conditions. The 428 MXZ\/4 model is engineered for riders who require a robust replacement chain for compatible motocross motorcycles and other applications using a 428 chain size.\u003c\/p\u003e\u003cp\u003eHeat-treated components help improve resistance to wear and fatigue, while the chromoly steel construction provides a strong foundation for long-term performance. Seamless rollers and bushings promote smooth chain movement and consistent engagement with the sprockets. Oversized alloy pins add strength in high-load conditions, making the RK 428 MXZ\/4 a suitable choice for racing, training, and aggressive off-road use.\u003c\/p\u003e\u003cp\u003eFeature: 428 chain size for compatible motocross and off-road drivetrain applications.\u003cbr\u003eFeature: 120-link configuration supports a range of compatible motorcycle fitments and may be trimmed when appropriate.\u003cbr\u003eFeature: RK 428 MXZ\/4 model engineered for high-performance motocross use.\u003cbr\u003eFeature: Heat-treated components enhance durability under demanding riding conditions.\u003cbr\u003eFeature: Chromoly steel construction provides strength and dependable service life.\u003cbr\u003eFeature: Seamless rollers and bushings support smooth, consistent operation.\u003cbr\u003eFeature: Oversized alloy pins provide added strength under heavy loads.\u003cbr\u003eFeature: Includes a clip-style connecting link for installation.\u003c\/p\u003e\u003cp\u003eVerify chain size, required link count, sprocket compatibility, and motorcycle manufacturer fitment specifications before installation. This RK chain is identified by manufacturer part number GB428MXZ4-120 and vendor part number GB428MXZ4-120.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e428 chain size for compatible motocross and off-road drivetrain applications\u003c\/li\u003e\n\u003cli\u003e120-link configuration for compatible motorcycle fitments\u003c\/li\u003e\n\u003cli\u003eRK 428 MXZ\/4 model for high-performance motocross use\u003c\/li\u003e\n\u003cli\u003eHeat-treated components for improved durability\u003c\/li\u003e\n\u003cli\u003eChromoly steel construction with seamless rollers and bushings\u003c\/li\u003e\n\u003cli\u003eOversized alloy pins for added strength\u003c\/li\u003e\n\u003cli\u003eIncludes a clip-style connecting link\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: GB428MXZ4-120\u003c\/li\u003e\n\u003cli\u003eVendor part number: GB428MXZ4-120\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RK","offers":[{"title":"Default Title","offer_id":67547010367723,"sku":"12210265","price":108.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/153249.png?v=1790676378","url":"https:\/\/ctracingservices.com\/products\/rk-428-mxz-4-heavy-duty-motocross-chain-120-links-part-gb428mxz4-120","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}