{"product_id":"carbon-ceramic-derailleur-pulley-for-shimano-dura-ace-ultegra-12s","title":"Carbon Ceramic Derailleur Pulley for Shimano Dura Ace Rd-9250 \u0026 Ultegra Rd-8150","description":"\u003cp\u003eDrivetrain efficiency is where races are won and training gains are protected. The Nova Ride Carbon Ceramic Derailleur Pulley for Shimano Dura-Ace RD-9250 and Ultegra RD-8150 replaces your stock pulley wheels with oversized ceramic-bearing units designed to reduce friction and improve shifting precision on India's demanding road surfaces. Cobbled Climbs is the exclusive Indian distributor for \u003ca href=\"https:\/\/www.campagnolo.com\/us-en\/\" target=\"_blank\" rel=\"noopener\" title=\"Campagnolo official site\"\u003eCampagnolo\u003c\/a\u003e in India.\u003c\/p\u003e\n\u003ch3\u003eUse Cases\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDaily training.\u003c\/strong\u003e Reliable use across Indian training conditions — heat, humidity, and rough tarmac.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRace day.\u003c\/strong\u003e Performance-grade construction for competitive efforts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLong rides.\u003c\/strong\u003e Built for full-day rides across Western Ghats, Sahyadri, or Nilgiri climbs.\u003c\/p\u003e\n\u003ch3\u003eOur Take\u003c\/h3\u003e\n\u003cp\u003eRiding through Pune's congested streets, up the Ghats to Lonavala, or on Chennai's coastal expressways, drivetrain losses add up fast — especially in 35°C+ heat where chain lube breaks down and every watt counts. Nova Ride's carbon ceramic pulleys deliver noticeably smoother chain movement and reduced mechanical drag. For riders running Dura-Ace Di2 or Ultegra Di2, this is one of the most cost-effective drivetrain upgrades available.\u003c\/p\u003e\n\u003ch3\u003eSizing for Indian Riders\u003c\/h3\u003e\n\u003cp\u003eThese pulleys are purpose-built for Shimano RD-9250 (Dura-Ace Di2) and RD-8150 (Ultegra Di2) rear derailleurs only. No sizing conversion is needed — fitment is determined by derailleur model, not rider size. Confirm your exact derailleur model before ordering. Available in Black, Gold, Blue, and Purple to suit your build aesthetic.\u003c\/p\u003e\n\u003ch3\u003eCompatibility Notes\u003c\/h3\u003e\n\u003cp\u003eDesigned exclusively for Shimano Dura-Ace RD-9250 and Ultegra RD-8150 rear derailleurs. Not compatible with older Shimano groupsets or SRAM and Campagnolo derailleurs. Ceramic bearings benefit from periodic cleaning — especially after monsoon riding in Mumbai, Kolkata, or coastal routes where grit and water ingress accelerate wear. Follow Nova Ride's recommended service intervals.\u003c\/p\u003e\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cp\u003eComplete your drivetrain upgrade with a quality ceramic-compatible chain lubricant for Indian heat and monsoon conditions, a precision chain wear indicator tool, a Shimano-compatible cassette for your current groupset, and a torque wrench for correct pulley installation.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"\/collections\/nova-ride\"\u003eExplore the full Nova Ride collection at Cobbled Climbs\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"cc-spec-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eCampagnolo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDerailleur\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipped From\u003c\/td\u003e\n\u003ctd\u003eMumbai, India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.cobbledclimbs.com\/collections\/campagnolo\" title=\"Campagnolo India\"\u003eExplore the full Campagnolo 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 — exclusive Indian distributor for Campagnolo\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 — built for Indian cycling conditions\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 is the Nova Ride Carbon Ceramic Derailleur Pulley best used for?\u003c\/summary\u003e\u003cp class=\"cc-faq__a\"\u003eThese pulleys are best suited to competitive road cyclists running Shimano Dura-Ace RD-9250 or Ultegra RD-8150 Di2 groupsets who want reduced drivetrain friction. They are a strong upgrade for riders doing long climbs in the Western Ghats, fast flat rides on Delhi or Hyderabad expressways, or anyone looking to extract more efficiency from their existing groupset.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"cc-faq__item\"\u003e\u003csummary class=\"cc-faq__q\"\u003eWhat size or variant of Nova Ride Ceramic Pulley should I order?\u003c\/summary\u003e\u003cp class=\"cc-faq__a\"\u003eSizing here means derailleur compatibility, not body size. These pulleys fit only Shimano RD-9250 (Dura-Ace Di2) and RD-8150 (Ultegra Di2). Check the model number on your rear derailleur before ordering. You can also choose from four colour options — Black, Gold, Blue, or Purple — to match your build.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"cc-faq__item\"\u003e\u003csummary class=\"cc-faq__q\"\u003eWill ceramic derailleur pulleys hold up in monsoon conditions and Indian heat?\u003c\/summary\u003e\u003cp class=\"cc-faq__a\"\u003eCeramic bearings are generally more resistant to heat-related degradation than standard steel bearings, which is useful for India's 35°C+ summers. However, monsoon riding in cities like Mumbai or Kolkata introduces grit and water ingress. Clean and re-lubricate the pulleys after wet rides and follow Nova Ride's service intervals to maintain performance.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"cc-faq__item\"\u003e\u003csummary class=\"cc-faq__q\"\u003eHow do Nova Ride ceramic pulleys compare to stock Shimano pulleys?\u003c\/summary\u003e\u003cp class=\"cc-faq__a\"\u003eStock Shimano Dura-Ace and Ultegra pulleys use standard steel bearings and plastic or alloy bodies. Nova Ride's oversized ceramic pulley wheels reduce the chain's bend angle and replace steel bearings with lower-friction ceramic units. The result is measurably reduced drivetrain resistance — a worthwhile upgrade for riders who already own a high-end groupset.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails class=\"cc-faq__item\"\u003e\u003csummary class=\"cc-faq__q\"\u003eIs the Nova Ride Carbon Ceramic Pulley worth Rs. 23,499 in India, and what warranty applies?\u003c\/summary\u003e\u003cp class=\"cc-faq__a\"\u003eAt Rs. 23,499, this is a premium drivetrain upgrade targeting riders who have already invested in Dura-Ace or Ultegra Di2. The efficiency gain is real but incremental — best appreciated on long rides and climbs like Ooty or Coorg. For warranty details, contact Cobbled Climbs directly. The product ships from Mumbai with free delivery on orders above Rs. 2,500.\u003c\/p\u003e\u003c\/details\u003e\u003c\/section\u003e","brand":"Nova Ride","offers":[{"title":"Grey","offer_id":45559881498797,"sku":"3770017366662","price":23499.0,"currency_code":"INR","in_stock":true},{"title":"Black","offer_id":45559881531565,"sku":null,"price":23499.0,"currency_code":"INR","in_stock":false},{"title":"Gold","offer_id":45559881564333,"sku":null,"price":23499.0,"currency_code":"INR","in_stock":false},{"title":"Red","offer_id":45559881597101,"sku":null,"price":23499.0,"currency_code":"INR","in_stock":false},{"title":"Blue","offer_id":45559881629869,"sku":"3770017366679","price":23499.0,"currency_code":"INR","in_stock":true},{"title":"Purple","offer_id":45586840486061,"sku":null,"price":23499.0,"currency_code":"INR","in_stock":false},{"title":"Orange","offer_id":45586840518829,"sku":null,"price":23499.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0401\/9958\/5953\/products\/NR-SHI-R12S-GR.jpg?v=1769306444","url":"https:\/\/www.cobbledclimbs.com\/products\/carbon-ceramic-derailleur-pulley-for-shimano-dura-ace-ultegra-12s","provider":"Cobbled Climbs","version":"1.0","type":"link"}