{"product_id":"mile-marker-upper-spring-for-hub-449-mile-marker-449-04-bcbt","title":"Upper Spring for Hub 449 Mile Marker","description":"\u003cp\u003eMile Marker Genuine Locking Hub Service Parts are engineered to maintain the strength, engagement reliability, and long-term durability of your manual locking hub system. Designed to meet original equipment specifications, these service components restore proper engagement, spring tension, sealing integrity, and internal function in demanding off-road and fleet environments. Whether servicing Premium, Premium Stainless, Street Master, or Selectro hubs, genuine Mile Marker service parts ensure smooth operation and dependable drivetrain control when traction demands are highest.\u003c\/p\u003e\n\u003cp\u003eProtect your investment and maintain peak hub performance with components designed specifically for your Mile Marker hub model.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures and Benefits:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt for long-term durability in off-road environments\u003c\/li\u003e\n\u003cli\u003eDesigned for precise fitment to specific hub model\u003c\/li\u003e\n\u003cli\u003eMaintains proper hub engagement and operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAssociated Comments:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mile Marker locking hub service component\u003c\/li\u003e\n\u003cli\u003eService kit part numbers correspond directly to the most common hub part number they support (e.g., 423SK services hub 423)\u003c\/li\u003e\n\u003cli\u003eVerify hub model and spline configuration prior to installation\u003c\/li\u003e\n\u003cli\u003eProfessional installation recommended\u003c\/li\u003e\n\u003cli\u003eInspect hub body and internal components for wear during service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDetails:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWarranty: 1 Year\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Quadratec","offers":[{"title":"Sold As: Kit","offer_id":49225034924259,"sku":"449.04-BCBT","price":14.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/4343\/1651\/files\/449.04-BCBT.jpg?v=1781035116","url":"https:\/\/shop.blackflagoffroad.com\/products\/mile-marker-upper-spring-for-hub-449-mile-marker-449-04-bcbt","provider":"Black Flag Off-Road","version":"1.0","type":"link"}