{"product_id":"6805rd-bike-bottom-bracket-bearing-ht2-bb51-mr25376-25x37x6mm","title":"6805RD Bike Bottom Bracket Bearing HT2 BB51 | 25x37x6mm","description":"\n\u003ch2\u003e6805RD Bicycle Bottom Bracket Bearing – HT2 \/ BB51 Compatible\u003c\/h2\u003e\n\u003cp\u003eKeep your drivetrain spinning smoothly with this high-quality \u003cstrong\u003e6805RD deep groove ball bearing\u003c\/strong\u003e, engineered specifically for bicycle bottom bracket applications. Compatible with HT2 and BB51 systems, this precision bearing delivers consistent, low-friction rotation to maximize your pedaling efficiency and extend the life of your bottom bracket assembly.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e MR25376 \/ SC6805N RS\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 for durability and longevity\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Inner Ø 25mm × Outer Ø 37mm × Thickness 6mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClosure Type:\u003c\/strong\u003e Double rubber sealed (2RS) — keeps dirt and moisture out\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLubrication:\u003c\/strong\u003e Pre-packed with grease for smooth, 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\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose This Bearing?\u003c\/h3\u003e\n\u003cp\u003eWhether you're replacing a worn-out bottom bracket bearing on your road bike, mountain bike, or commuter, this 6805RD bearing is a direct-fit solution. The double rubber seal (2RS) effectively blocks contaminants, while the pre-applied grease ensures effortless installation and long-lasting smooth rotation mile after mile.\u003c\/p\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × 6805RD Bicycle Bottom Bracket Bearing (MR25376 \/ SC6805N RS)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Due to manual measurement, please allow a tolerance of 1–3mm. Colors in product images may vary slightly from the actual item due to monitor display differences.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/2-pack-s-hook-brake-caliper-hanger-hooks-rubber-tips-2-pack\"\u003e2-Pack S-Hook Brake Caliper Hangers with Rubber Tips\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/25-in-1-precision-magnetic-screwdriver-set-pro-repair-tool-kit\"\u003e25-in-1 Precision Magnetic Screwdriver Set | Pro Repair Kit\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/4-pack-deer-whistle-wildlife-alert-devices-vehicle\"\u003e4-Pack Deer Whistle Wildlife Alert Devices for Vehicles\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: Is the 6805RD bearing compatible with Shimano HT2 and BB51 bottom brackets?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This 6805RD bearing is specifically designed for use with HT2 and BB51 bottom bracket systems, making it a reliable direct replacement for those setups. Always verify the inner diameter (25mm) and outer diameter (37mm) match your existing bearing before installation.\u003c\/p\u003e\n\u003ch4\u003eQ: What does the 2RS (rubber sealed) closure mean for my bike?\u003c\/h4\u003e\n\u003cp\u003eA: The 2RS designation means the bearing features double rubber seals on both sides. This keeps grease inside the bearing and prevents dirt, water, and debris from entering — ideal for cycling in varied and demanding conditions, helping maintain smooth rotation for longer.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this bearing come pre-lubricated?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the 6805RD bearing comes pre-packed with grease, so it is ready to install straight out of the box with no additional lubrication required.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is the 6805RD bearing compatible with Shimano HT2 and BB51 bottom brackets?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. This 6805RD bearing is specifically designed for use with HT2 and BB51 bottom bracket systems, making it a reliable direct replacement for those setups. 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