{"product_id":"ospw-x-for-shimano-grx810-815-rx800-805","title":"OSPW X for Shimano GRX810\/815 + RX800\/805","description":"\u003cp data-path-to-node=\"3\"\u003eThis OSPW X system is engineered to bring elite efficiency to the gravel world. It replaces the stock Shimano cage with a custom-molded carbon fiber reinforced polyamide cage and features a 13-tooth upper and 19-tooth lower pulley wheel combination. This setup reduces the chain's articulation angle, leading to a 35–40% reduction in drivetrain friction. Designed specifically for the clutch-equipped GRX (RD-RX810\/815) and Ultegra RX (RD-RX800\/805) derailleurs, it provides the necessary stiffness to maintain crisp shifting even when the clutch is engaged on rough terrain.\u003c\/p\u003e\n\u003cp data-path-to-node=\"4\"\u003eKey Features\u003c\/p\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003eMassive Watt Savings: Proven to reduce mechanical drag by approximately 35–40% over the stock Shimano pulley configuration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003eClutch-Compatible Design: The reinforced cage is specifically built to handle the higher spring tension of Shimano’s Shadow RD+ clutch systems without sacrificing shift speed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e4 Spring Tension Settings: Features four distinct tension adjustment holes, allowing you to prioritize maximum efficiency (low tension) or extreme chain security for aggressive gravel\/CX riding (high tension).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003eHandbuilt Ceramic Bearings: Equipped with CeramicSpeed's signature hybrid ceramic bearings, which are significantly harder and smoother than standard steel bearings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,4,0\"\u003eGravel-Ready Durability: Built to withstand the mud, dust, and vibration inherent in gravel racing and cyclocross.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"6\"\u003eSpecifications\u003c\/p\u003e\n\u003cul data-path-to-node=\"7\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,0,0\"\u003eCompatibility: Shimano GRX RD-RX810 (Mechanical), GRX RD-RX815 (Di2), Ultegra RD-RX800 (Mechanical), and Ultegra RD-RX805 (Di2).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,1,0\"\u003eSpeed: 11-speed only.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,2,0\"\u003eMax Cassette Size: Supports up to a 34T or 36T cassette (depending on derailleur B-limit setup).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,3,0\"\u003ePulley Setup: 13-tooth upper \/ 19-tooth lower.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,4,0\"\u003eBearing Options: Standard Ceramic or Coated (75% harder races with a Lifetime Warranty).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"8\"\u003eTypical Components Included\u003c\/p\u003e\n\u003cul data-path-to-node=\"9\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,0,0\"\u003eComplete OSPW X System (Cage and Pulley Wheels).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,1,0\"\u003eCeramicSpeed Pulley Oil (15ml dropper bottle).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,2,0\"\u003eUser manual and installation guide.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ceramic Speed","offers":[{"title":"Black","offer_id":54272269844852,"sku":null,"price":80240.0,"currency_code":"INR","in_stock":true},{"title":"Red","offer_id":54272269418868,"sku":null,"price":80240.0,"currency_code":"INR","in_stock":true},{"title":"Blue","offer_id":54272269451636,"sku":null,"price":80240.0,"currency_code":"INR","in_stock":true},{"title":"Gold","offer_id":54272269484404,"sku":null,"price":80240.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0986\/1991\/6660\/files\/108529_108531.webp?v=1775218176","url":"https:\/\/velorays.com\/products\/ospw-x-for-shimano-grx810-815-rx800-805","provider":"Velorays","version":"1.0","type":"link"}