{"product_id":"6805-rd-bike-bottom-bracket-bearing-25x37x6mm-ht2-bb51-2","title":"6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51","description":"\n\u003ch2\u003e6805-RD Deep Groove Ball Bearing for Bike Bottom Brackets\u003c\/h2\u003e\n\u003cp\u003eKeep your ride smooth and efficient with this high-quality \u003cstrong\u003e6805-RD Bicycle Bottom Bracket Bearing\u003c\/strong\u003e. Engineered to fit popular bottom bracket standards including \u003cstrong\u003eHT2\u003c\/strong\u003e and \u003cstrong\u003eBB51\u003c\/strong\u003e, this precision deep groove ball bearing (model MR25376 \/ SC6805N) delivers reliable performance for road, mountain, and gravel cycling applications.\u003c\/p\u003e\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e 6805-RD \/ MR25376 \/ SC6805N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStructure:\u003c\/strong\u003e Deep Groove Ball Bearing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-grade bearing steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInner Diameter:\u003c\/strong\u003e 25 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 37 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 6 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Rubber sealed (RD)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLubrication:\u003c\/strong\u003e Pre-greased for long-lasting smooth operation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDynamic Load Rating (Cr):\u003c\/strong\u003e 4,150 N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStatic Load Rating (Cor):\u003c\/strong\u003e 2,382 N\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e HT2, BB51 bottom bracket systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e 1 × Bearing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose This Bearing?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePrecision-engineered\u003c\/strong\u003e deep groove ball design for minimal friction and maximum efficiency\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eRubber sealed\u003c\/strong\u003e construction keeps dirt, water, and contaminants out for longer service life\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePre-greased\u003c\/strong\u003e internals ensure smooth, consistent rotation straight out of the box\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eHigh-grade bearing steel\u003c\/strong\u003e construction for durability under demanding cycling loads\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eExact-fit dimensions\u003c\/strong\u003e (25×37×6 mm) for direct replacement in HT2 and BB51 systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Bottom Bracket Systems\u003c\/h3\u003e\n\u003cp\u003eThis bearing is a direct replacement for the 6805-RD specification used in a wide range of threaded and press-fit bottom bracket assemblies, including \u003cstrong\u003eHT2\u003c\/strong\u003e (e.g. FSA, Truvativ) and \u003cstrong\u003eBB51\u003c\/strong\u003e (e.g. Shimano) standards. Always verify your bottom bracket model before ordering to ensure compatibility.\u003c\/p\u003e\n\n\u003ch3\u003eNotes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDue to manual measurement, please allow a tolerance of ±1–3 mm.\u003c\/li\u003e\n  \u003cli\u003eActual product color may vary slightly from images due to monitor display differences.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/360-bicycle-chain-cleaner-tool-gear-cleaning-kit\"\u003e360° Bicycle Chain Cleaner Tool | Bike Gear Cleaning Kit\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/60cm-motorcycle-luggage-strap-elastic-helmet-bungee-net\"\u003e60cm Motorcycle Luggage Strap – Elastic Helmet Bungee Net\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What bike bottom bracket standards is the 6805-RD bearing compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The 6805-RD bearing (MR25376 \/ SC6805N) is designed for use with \u003cstrong\u003eHT2\u003c\/strong\u003e and \u003cstrong\u003eBB51\u003c\/strong\u003e bottom bracket systems, which are found on many road and mountain bikes from brands such as FSA, Truvativ, and Shimano. Always confirm your specific bottom bracket model to ensure a correct fit before purchasing.\u003c\/p\u003e\n\u003ch4\u003eQ: What are the exact dimensions of this bottom bracket bearing?\u003c\/h4\u003e\n\u003cp\u003eA: This bearing measures \u003cstrong\u003e25 mm inner diameter × 37 mm outer diameter × 6 mm thickness\u003c\/strong\u003e, making it a standard 6805-series bearing. The rubber sealed (RD) closure and pre-greased internals make it ready to install right away.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this bearing suitable for replacing a worn or damaged bottom bracket bearing?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This is a direct replacement 6805-RD bearing for HT2 and BB51 compatible bottom brackets. The high-grade bearing steel construction and rubber seal make it a reliable upgrade or replacement option for cyclists looking to restore smooth, efficient pedaling performance.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the bearing come pre-lubricated?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the bearing comes pre-greased from the factory. The rubber sealed design helps retain the grease and keep contaminants out, so no additional lubrication is needed before installation.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What bike bottom bracket standards is the 6805-RD bearing compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 6805-RD bearing (MR25376 \/ SC6805N) is designed for use with HT2 and BB51 bottom bracket systems, which are found on many road and mountain bikes from brands such as FSA, Truvativ, and Shimano. Always confirm your specific bottom bracket model to ensure a correct fit before purchasing.\"}}, {\"@type\": \"Question\", \"name\": \"What are the exact dimensions of this bottom bracket bearing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This bearing measures 25 mm inner diameter × 37 mm outer diameter × 6 mm thickness, making it a standard 6805-series bearing. The rubber sealed (RD) closure and pre-greased internals make it ready to install right away.\"}}, {\"@type\": \"Question\", \"name\": \"Is this bearing suitable for replacing a worn or damaged bottom bracket bearing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. This is a direct replacement 6805-RD bearing for HT2 and BB51 compatible bottom brackets. The high-grade bearing steel construction and rubber seal make it a reliable upgrade or replacement option for cyclists looking to restore smooth, efficient pedaling performance.\"}}, {\"@type\": \"Question\", \"name\": \"Does the bearing come pre-lubricated?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the bearing comes pre-greased from the factory. The rubber sealed design helps retain the grease and keep contaminants out, so no additional lubrication is needed before installation.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/products\/6805-rd-bike-bottom-bracket-bearing-25x37x6mm-ht2-bb51\"}]}\u003c\/script\u003e","brand":"Axl","offers":[{"title":"one size","offer_id":44167304806487,"sku":"14:350686#one size","price":11.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/6008\/7383\/files\/S39072761e8c74f1c80a2f2eb925d1783f.webp?v=1786760736","url":"https:\/\/axlcustomersupport.com\/products\/6805-rd-bike-bottom-bracket-bearing-25x37x6mm-ht2-bb51-2","provider":"Axl","version":"1.0","type":"link"}