{"product_id":"new-x-lab-rt9-lightweight-performance-road-bike-shimano-dura-ace-r9150-di2-2x12-speed-carbon-wheels","title":"NEW X-LAB RT9 Lightweight Performance Road Bike - Shimano Dura-Ace R9150 Di2 2x12 Speed, Carbon Wheels","description":"\u003cp\u003e\u003cstrong\u003eSTOCK UPDATE 5\/19\/2026: We are anticipating RT9s to be restocked in June.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eX-LAB RT9: The lightest production road frame ever built.\u003c\/p\u003e\n\u003cp\u003eThe RT9 redefines what is possible in lightweight performance engineering. Constructed from Toray T1100 carbon and refined through extensive structural analysis, the frame weighs an astonishing 550 grams while maintaining the stiffness and durability required for elite racing. The RT9 is the lightest production road bike frame in the world. Period.\u003c\/p\u003e\n\u003cp\u003eThe 550g Frame to Defy Gravity\u003c\/p\u003e\n\u003cp\u003eWhen the goal is pure elevation, grams matter. The RT9 begins with a frame engineered to ~550 grams, built to feel weightless on the steepest pitches while staying composed under real-world power.\u003c\/p\u003e\n\u003cp\u003eA Cockpit Built for Switchbacks\u003c\/p\u003e\n\u003cp\u003eEvery touchpoint is designed for climbing: a lightweight, responsive integrated cockpit that keeps the front end precise when the road turns vertical and the pace turns personal.\u003c\/p\u003e\n\u003cp\u003eSeamless Integration, Elite Efficiency\u003c\/p\u003e\n\u003cp\u003eFrom seatpost to tube junctions, RT9’s integration is obsessively refined to complement an all-out climbing machine with cleaner lines, cleaner airflow, and a ride that feels like perpetual poetry in motion.\u003c\/p\u003e\n\u003cp\u003eKEY FEATURES:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBranta C50 ULR carbon wheelset with carbon spokes | 1,230 g\u003c\/li\u003e\n\u003cli\u003eBranta carbon crankset with integrated power meter + Apple Find My anti-theft technology\u003c\/li\u003e\n\u003cli\u003eShimano Dura-Ace groupset\u003c\/li\u003e\n\u003cli\u003eXDS carbon frameset with Toray T1100, Full bike 6.2kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBUILD KIT:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFRAME: XDS Carbon Frame, Toray T-1100 + M40X, UDH Compatible\u003c\/li\u003e\n\u003cli\u003eFORK: XDS Carbon Fork, Toray T-1100, 100x12mm Thru-axle\u003c\/li\u003e\n\u003cli\u003eHANDLEBAR \/ STEM: Branta Carbon Integrated\u003c\/li\u003e\n\u003cli\u003eSEATPOST: XDS Carbon Seatpost, 27.2mm\u003c\/li\u003e\n\u003cli\u003eREAR DERAILLEUR: Shimano Dura-Ace RD-R9250 Di2\u003c\/li\u003e\n\u003cli\u003eFRONT DERAILLEUR: Shimano Dura-Ace FD-R9250 Di2\u003c\/li\u003e\n\u003cli\u003eSHIFTERS: Shimano Dura-Ace ST-R9270 Di2\u003c\/li\u003e\n\u003cli\u003eBRAKES: Shimano Dura-Ace BR-R9270\u003c\/li\u003e\n\u003cli\u003eCASSETTE: Shimano Dura-Ace CS-R9200, 11-34T\u003c\/li\u003e\n\u003cli\u003eCRANKSET: Branta Carbon Power Meter Crankset, 52-36T, 29mm Alloy Spindle, Apple Find My Anti-Theft Technology\u003c\/li\u003e\n\u003cli\u003eBOTTOM BRACKET: BSA 29mm\u003c\/li\u003e\n\u003cli\u003eROTORS: Shimano SM-MT900, F:160mm R:140mm\u003c\/li\u003e\n\u003cli\u003eCHAIN: Shimano CN-M9100\u003c\/li\u003e\n\u003cli\u003eWHEELSET: Branta C50 ULR, Carbon Rims \u0026amp; Spokes\u003c\/li\u003e\n\u003cli\u003eTIRES: Michelin Pro 5 700x28C\u003c\/li\u003e\n\u003cli\u003eSADDLE: Selle Italia SLR Boost, Carbon Rails\u003c\/li\u003e\n\u003cli\u003eWEIGHT: 6.20 kg \/ 13.64 lbs (Size L)\u003c\/li\u003e\n\u003cli\u003eSIZE OPTIONS: XS \/ S \/ M \/ L\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSIZING: X-Lab recommends the following sizes based on rider height: \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eXS: 4'10\" - 5'2\"\u003c\/li\u003e\n\u003cli\u003eS: 5'2\" - 5'6\"\u003c\/li\u003e\n\u003cli\u003eM: 5'6\" - 5'9\"\u003c\/li\u003e\n\u003cli\u003eL: 5'9\" - 6'0\"\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"XDS \/ X-LAB","offers":[{"title":"Shadowbox \/ XS","offer_id":52852323909951,"sku":"210000075195","price":9150.0,"currency_code":"USD","in_stock":false},{"title":"Shadowbox \/ S","offer_id":52852324073791,"sku":"210000075196","price":9150.0,"currency_code":"USD","in_stock":false},{"title":"Shadowbox \/ M","offer_id":52852324106559,"sku":"210000075197","price":9150.0,"currency_code":"USD","in_stock":false},{"title":"Shadowbox \/ L","offer_id":52852324139327,"sku":"210000075198","price":9150.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0799\/5585\/files\/RT9-shadowbox-1.webp?v=1777077950","url":"https:\/\/aroundthecycle.com\/products\/new-x-lab-rt9-lightweight-performance-road-bike-shimano-dura-ace-r9150-di2-2x12-speed-carbon-wheels","provider":"Around the Cycle","version":"1.0","type":"link"}