{"product_id":"berd-sparrow50-gold-carbon-wheels","title":"Berd Sparrow50 Gold Carbon Wheels","description":"\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cem\u003eWheels Ship in 1-2 weeks from order date\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAero speed. Gravel comfort. Race-proven performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Berd Sparrow50 Gold is a high-performance gravel wheelset engineered to combine aerodynamic efficiency, ultra-low weight, and Berd’s signature vibration-damping spokes. With a 50 mm deep carbon rim and a claimed weight of just \u003c\/span\u003e\u003cspan\u003e1,298 grams\u003c\/span\u003e\u003cspan\u003e, the Sparrow50 Gold is built for riders looking for maximum speed without sacrificing control and comfort when the terrain gets rough.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWind-tunnel development resulted in a wheelset that is \u003c\/span\u003e\u003cspan\u003e14% more aerodynamic than the previous-generation Sparrow\u003c\/span\u003e\u003cspan\u003e, with the rim profile optimized around modern \u003c\/span\u003e\u003cspan\u003e40–60 mm gravel tires\u003c\/span\u003e\u003cspan\u003e. Berd specifically developed and tested the wheels with 45–55 mm tires, including the Schwalbe G-One RS PRO 45 mm.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAt the heart of the wheelset are \u003c\/span\u003e\u003cspan\u003eBerd PolyLight spokes\u003c\/span\u003e\u003cspan\u003e, weighing just 2.4 grams each. Beyond reducing weight, their viscoelastic properties help damp high-frequency vibration from rough gravel. Independent testing measured a \u003c\/span\u003e\u003cspan\u003e5-watt rolling-efficiency savings at 30 km\/h\u003c\/span\u003e\u003cspan\u003e, helping reduce energy loss while creating a smoother ride that can lessen rider fatigue over long distances.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHighlights\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e50 mm aerodynamic carbon rim\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e30 mm internal rim width\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eOptimized for \u003c\/span\u003e\u003cspan\u003e40–60 mm gravel tires\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1,298 g claimed wheelset weight\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBerd vibration-damping spokes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e5-watt measured rolling-efficiency savings at 30 km\/h\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eTalon ESL-R hubs with \u003c\/span\u003e\u003cspan\u003eTri-Coat™ aluminum freehub\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e36-tooth dual-sprung ratchet\u003c\/span\u003e\u003cspan\u003e for quick engagement\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEqual Spoke Length (ESL) design simplifies spare spokes and servicing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eFront hub converts between \u003c\/span\u003e\u003cspan\u003e12 mm and 15 mm axles\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eTubeless-ready with a wide \u003c\/span\u003e\u003cspan\u003e4 mm hooked bead\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAvailable in \u003c\/span\u003e\u003cspan\u003e700C and 32-inch\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLifetime crash replacement\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLifetime warranty against manufacturing defects\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eWith Olympic medals and more than 50 XC World Cup podiums associated with Berd spokes over the past two seasons, the Sparrow50 Gold brings race-proven spoke technology to an exceptionally light and aerodynamic gravel platform.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBuilt for gravel racers who want speed on the smooth sections, efficiency through the rough, and less fatigue when the miles start adding up.\u003c\/span\u003e\u003c\/p\u003e","brand":"Louisville Bike Labs","offers":[{"title":"Black \/ Talon ESL-R 12x100 v Front\/12x142 Rear Shimano 11SP","offer_id":53908620869908,"sku":null,"price":2395.0,"currency_code":"USD","in_stock":true},{"title":"White \/ Talon ESL-R 12x100 v Front\/12x142 Rear Shimano 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