{"product_id":"6805-rd-bike-bottom-bracket-bearing-25x37x6mm-ht2-bb51-1","title":"6805-RD Bike Bottom Bracket Bearing 25x37x6mm HT2 BB51","description":"\n\u003ch2\u003e6805-RD Deep Groove Ball Bearing for Bicycle Bottom Brackets\u003c\/h2\u003e\n\u003cp\u003eUpgrade or replace your bike's bottom bracket with this precision-engineered \u003cstrong\u003e6805-RD bearing (25x37x6mm)\u003c\/strong\u003e. Designed specifically for \u003cstrong\u003eHT2 and BB51 bottom bracket systems\u003c\/strong\u003e, this bearing delivers smooth, consistent pedaling performance for road, mountain, and commuter bikes alike. Also referenced as \u003cstrong\u003eMR25376\u003c\/strong\u003e and \u003cstrong\u003eSC6805N\u003c\/strong\u003e, it fits a wide range of compatible crankset and bottom bracket assemblies.\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 25mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 37mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 6mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClosures:\u003c\/strong\u003e Rubber sealed (RD) – keeps out dirt, dust, and moisture\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLubrication:\u003c\/strong\u003e Pre-greased for low-friction, ready-to-install performance\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 Systems:\u003c\/strong\u003e HT2, BB51\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 fit\u003c\/strong\u003e – exact 25x37x6mm dimensions for HT2 \/ BB51 bottom bracket compatibility\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eRubber sealed\u003c\/strong\u003e – dual-contact rubber seals lock in grease and block contaminants for longer service life\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003ePre-greased\u003c\/strong\u003e – install and ride right away with no additional lubrication needed\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eBearing steel construction\u003c\/strong\u003e – high hardness and wear resistance for demanding cycling conditions\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCompact \u0026amp; lightweight\u003c\/strong\u003e – minimal added weight while maximizing rotational efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility Notes\u003c\/h3\u003e\n\u003cp\u003eThis bearing is compatible with \u003cstrong\u003eHT2\u003c\/strong\u003e (Shimano Hollowtech II style) and \u003cstrong\u003eBB51\u003c\/strong\u003e bottom bracket cups, and other crankset systems using a 25mm inner diameter \/ 37mm outer diameter \/ 6mm width bearing. Always verify your bottom bracket specifications before ordering.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\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\u003e\u003cem\u003eNote: Due to manual measurement, please allow a tolerance of 1–3mm. Product color may vary slightly from images due to different monitor calibrations.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/health.gov\/moveyourway\" target=\"_blank\" rel=\"noopener\"\u003eHHS Move Your Way physical activity guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What bike bottom bracket systems is the 6805-RD bearing compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The 6805-RD bearing (25x37x6mm) is specifically designed for \u003cstrong\u003eHT2\u003c\/strong\u003e and \u003cstrong\u003eBB51\u003c\/strong\u003e bottom bracket systems. It is also sold under the model numbers MR25376 and SC6805N. Always confirm your bottom bracket's inner diameter (25mm), outer diameter (37mm), and width (6mm) before installing.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this bearing pre-lubricated and ready to install?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The 6805-RD bearing comes pre-greased and features rubber seals that retain the grease and keep out contaminants. It is ready to install straight out of the package — no additional lubrication is required before use.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I know if my bottom bracket needs a new bearing?\u003c\/h4\u003e\n\u003cp\u003eA: Common signs that your bottom bracket bearing needs replacement include rough or grinding sensations while pedaling, lateral play in the crankset, or unusual noise during riding. Replacing a worn bearing with a correctly sized 25x37x6mm deep groove ball bearing restores smooth and efficient pedaling performance.\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 systems is the 6805-RD bearing compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 6805-RD bearing (25x37x6mm) is specifically designed for HT2 and BB51 bottom bracket systems. It is also sold under the model numbers MR25376 and SC6805N. Always confirm your bottom bracket's inner diameter (25mm), outer diameter (37mm), and width (6mm) before installing.\"}}, {\"@type\": \"Question\", \"name\": \"Is this bearing pre-lubricated and ready to install?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The 6805-RD bearing comes pre-greased and features rubber seals that retain the grease and keep out contaminants. It is ready to install straight out of the package — no additional lubrication is required before use.\"}}, {\"@type\": \"Question\", \"name\": \"How do I know if my bottom bracket needs a new bearing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Common signs that your bottom bracket bearing needs replacement include rough or grinding sensations while pedaling, lateral play in the crankset, or unusual noise during riding. Replacing a worn bearing with a correctly sized 25x37x6mm deep groove ball bearing restores smooth and efficient pedaling performance.\"}}]}\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":43696912039997,"sku":"14:350686#one size","price":11.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/3439\/0333\/files\/S39072761e8c74f1c80a2f2eb925d1783f_b399c8a7-91b1-469f-ba7f-e9272ed5cfb3.webp?v=1790182991","url":"https:\/\/qtiply.com\/products\/6805-rd-bike-bottom-bracket-bearing-25x37x6mm-ht2-bb51-1","provider":"QTP","version":"1.0","type":"link"}