{"product_id":"61903-2rsf-hc-6803-hub-bearings","title":"61903-2RSF\/HC (6803) Hub Bearings","description":"\u003cp\u003eThe CeramicSpeed 61903-2RSF\/HC (6803) Hub Bearings are precision-engineered ceramic hybrid bearings designed for cyclists who want to extract every watt from their drivetrain. Built to replace standard hub bearings across a wide range of wheel systems, these bearings reduce friction and rolling resistance — making them a worthwhile upgrade whether you're grinding up the Western Ghats or chasing fast laps around Hyderabad's Outer Ring Road.\u003c\/p\u003e\u003ch3\u003eOur Take\u003c\/h3\u003e\u003cp\u003eIndia's riding conditions are demanding: gritty roads from Pune to Chennai, monsoon-season contamination, and summer heat well above 35°C all accelerate wear in standard steel bearings. CeramicSpeed's hybrid ceramic construction handles these conditions with noticeably lower rolling resistance and longer service intervals. For riders who regularly climb routes in Lonavala, Khandala, or Coorg, the reduced friction translates directly into less fatigue on long ascents — a genuine, measurable difference in real-world riding.\u003c\/p\u003e\u003ch3\u003eSizing for Indian Riders\u003c\/h3\u003e\u003cp\u003eThese are wheel hub bearings, so sizing is determined by your hub's bearing seats rather than rider body size. The 61903-2RSF\/HC corresponds to the 6803 bearing standard. Before purchasing, confirm your hub's inner diameter, outer diameter, and width specifications with your wheel manufacturer or local bike shop. This sizing is consistent across European and Indian market hubs, so no regional adjustment is needed.\u003c\/p\u003e\u003ch3\u003eCompatibility Notes\u003c\/h3\u003e\u003cp\u003eThe 6803 bearing standard is widely used across road, gravel, and mountain bike hubs from brands including DT Swiss, Chris King, Shimano, and many others. These are double-sealed (2RS) bearings suitable for wet and dusty Indian road conditions. Always clean bearing seats thoroughly before installation and use a proper bearing press to avoid damage during fitting.\u003c\/p\u003e\u003ch3\u003ePairs Well With\u003c\/h3\u003e\u003cp\u003eConsider pairing these hub bearings with a quality wheelset for the full upgrade effect. A ceramic-compatible lubricant or grease will extend service life further. Bottom bracket bearings from CeramicSpeed make a natural companion upgrade, and a bearing press tool kit is essential for clean installation at home or in the workshop.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/collections\/ceramic-speed\"\u003eExplore the full Ceramic Speed collection at Cobbled Climbs\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy buy from Cobbled Climbs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e100% genuine — authorised Ceramic Speed retailer in India\u003c\/li\u003e\n\u003cli\u003eFree delivery on orders above Rs. 2,500\u003c\/li\u003e\n\u003cli\u003eCash on delivery available nationwide\u003c\/li\u003e\n\u003cli\u003e7-day easy returns\u003c\/li\u003e\n\u003cli\u003eShipped from Mumbai\u003c\/li\u003e\n\u003cli\u003eExpert advice — our team rides this gear\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstyle\u003e.cc-faq{margin:32px 0 24px}.cc-faq__item{border-top:1px solid #e5e5e5;margin:0}.cc-faq__item:last-of-type{border-bottom:1px solid #e5e5e5}.cc-faq__q{cursor:pointer;list-style:none;padding:24px 0;display:flex;justify-content:space-between;align-items:center;gap:24px;outline:none}.cc-faq__q::-webkit-details-marker{display:none}.cc-faq__q:focus-visible{outline:2px solid #000;outline-offset:-2px}.cc-faq__q::after{content:\"\";width:14px;height:14px;flex-shrink:0;background-image:url('data:image\/svg+xml;utf8,\u003csvg viewBox=\\\"0 0 14 14\\\" xmlns=\\\"http:\/\/www.w3.org\/2000\/svg\\\"\u003e\u003cpath d=\\\"M2 5l5 5 5-5\\\" stroke=\\\"%23000\\\" stroke-width=\\\"1.5\\\" fill=\\\"none\\\"\/\u003e\u003c\/svg\u003e');background-repeat:no-repeat;background-position:center;transition:transform .2s ease}.cc-faq__item[open] .cc-faq__q::after{transform:rotate(180deg)}.cc-faq__a{padding:0 0 28px;margin:0}\u003c\/style\u003e\u003csection class=\"cc-faq\" aria-label=\"Frequently Asked Questions\"\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"cc-faq__item\"\u003e\u003csummary class=\"cc-faq__q\"\u003eWhat are the CeramicSpeed 61903-2RSF\/HC (6803) Hub Bearings best used for?\u003c\/summary\u003e\u003cp class=\"cc-faq__a\"\u003eThese bearings are best used as a performance upgrade for road, gravel, or mountain bike wheel hubs. They are particularly well suited to riders who log high kilometres — such as those regularly tackling climbs in Coorg or Ooty — and want to reduce rolling resistance and extend the service intervals between bearing replacements compared to standard steel bearings.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails class=\"cc-faq__item\"\u003e\u003csummary class=\"cc-faq__q\"\u003eWhat size CeramicSpeed hub bearings should I order for my wheels?\u003c\/summary\u003e\u003cp class=\"cc-faq__a\"\u003eThe 61903-2RSF\/HC corresponds to the 6803 bearing standard. Sizing is determined by your hub's bearing seat dimensions, not your body size. Check your hub manufacturer's specifications for inner diameter, outer diameter, and width before ordering. If you are unsure, take your wheel to a local bike shop in Pune, Bangalore, or your nearest city for a quick measurement.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails class=\"cc-faq__item\"\u003e\u003csummary class=\"cc-faq__q\"\u003eWill CeramicSpeed hub bearings hold up in Indian monsoon conditions and summer heat?\u003c\/summary\u003e\u003cp class=\"cc-faq__a\"\u003eYes. The double-sealed (2RS) design on these bearings is specifically intended to resist contamination from water, grit, and mud — conditions common during India's monsoon season and on the dusty roads found across Rajasthan and central India. The ceramic hybrid construction also handles heat above 35°C better than standard steel bearings, resisting thermal expansion and maintaining smooth rolling.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails class=\"cc-faq__item\"\u003e\u003csummary class=\"cc-faq__q\"\u003eHow do CeramicSpeed hub bearings compare to standard OEM steel hub bearings?\u003c\/summary\u003e\u003cp class=\"cc-faq__a\"\u003eStandard OEM steel bearings are functional but wear faster under demanding conditions. CeramicSpeed ceramic hybrid bearings use harder, smoother ceramic balls that generate less friction and last significantly longer with proper care. The trade-off is a higher upfront cost — Rs. 14,200 versus much cheaper OEM replacements — but riders who value performance and reduced maintenance frequency find the investment worthwhile over a full season of riding.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails class=\"cc-faq__item\"\u003e\u003csummary class=\"cc-faq__q\"\u003eAre CeramicSpeed hub bearings worth the price in India, and what warranty is included?\u003c\/summary\u003e\u003cp class=\"cc-faq__a\"\u003eFor performance-oriented riders in India, CeramicSpeed bearings are considered a strong long-term value based on customer feedback and specification comparisons. Lower friction means less energy wasted on every ride, and longer bearing life reduces replacement frequency. CeramicSpeed products are backed by the brand's quality guarantee — contact Cobbled Climbs directly for warranty claim support and service information specific to your purchase.\u003c\/p\u003e\u003c\/details\u003e\u003c\/section\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What are the CeramicSpeed 61903-2RSF\/HC (6803) Hub Bearings best used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"These bearings are best used as a performance upgrade for road, gravel, or mountain bike wheel hubs. They are particularly well suited to riders who log high kilometres — such as those regularly tackling climbs in Coorg or Ooty — and want to reduce rolling resistance and extend the service intervals between bearing replacements compared to standard steel bearings.\"}}, {\"@type\": \"Question\", \"name\": \"What size CeramicSpeed hub bearings should I order for my wheels?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 61903-2RSF\/HC corresponds to the 6803 bearing standard. Sizing is determined by your hub's bearing seat dimensions, not your body size. Check your hub manufacturer's specifications for inner diameter, outer diameter, and width before ordering. If you are unsure, take your wheel to a local bike shop in Pune, Bangalore, or your nearest city for a quick measurement.\"}}, {\"@type\": \"Question\", \"name\": \"Will CeramicSpeed hub bearings hold up in Indian monsoon conditions and summer heat?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The double-sealed (2RS) design on these bearings is specifically intended to resist contamination from water, grit, and mud — conditions common during India's monsoon season and on the dusty roads found across Rajasthan and central India. The ceramic hybrid construction also handles heat above 35°C better than standard steel bearings, resisting thermal expansion and maintaining smooth rolling.\"}}, {\"@type\": \"Question\", \"name\": \"How do CeramicSpeed hub bearings compare to standard OEM steel hub bearings?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Standard OEM steel bearings are functional but wear faster under demanding conditions. CeramicSpeed ceramic hybrid bearings use harder, smoother ceramic balls that generate less friction and last significantly longer with proper care. 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CeramicSpeed products are backed by the brand's quality guarantee — contact Cobbled Climbs directly for warranty claim support and service information specific to your purchase.\"}}]}\u003c\/script\u003e","brand":"Ceramic Speed","offers":[{"title":"Standard","offer_id":47405974585517,"sku":"101274","price":14200.0,"currency_code":"INR","in_stock":false},{"title":"Coated","offer_id":47405974618285,"sku":null,"price":25000.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0401\/9958\/5953\/files\/download_24_0432c670-d259-4250-9408-5a8353598381.png?v=1788428037","url":"https:\/\/www.cobbledclimbs.com\/products\/61903-2rsf-hc-6803-hub-bearings","provider":"Cobbled Climbs","version":"1.0","type":"link"}