{"product_id":"berd-sparrow50-gold-carbon-wheels","title":"Berd Sparrow50 Gold Carbon Wheels","description":"\u003ch3 class=\"hawk30gold-hero__overlay-text\"\u003eSuper Aerodynamic with Vibration-Damping Spokes\u003c\/h3\u003e\n\u003cp class=\"hawk30gold-hero__overlay-lede\"\u003eThe Sparrow50 Gold is 14% more aerodynamic than our previous-generation Sparrow, with the same vibration damping no aero rival can match — a combination that, in our finish-time modeling, pulls ahead of wheels like ENVE and Zipp as the gravel turns rough.\u003c\/p\u003e\n\u003ch4 class=\"hawk30gold-card__title\"\u003eOptimized for Aerodynamics\u003c\/h4\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003eThe Sparrow50 Gold wheels are compatible with 40 mm – 60 mm tires and were optimized in the wind tunnel with 45 mm to 55 mm tires in close collaboration with Schwalbe. The Schwalbe G-One RS PRO in 45 mm is the fastest, most aerodynamic tire we have tested for Cat 1 gravel.\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ch4 class=\"hawk30gold-card__title\"\u003e5 Watt Vibration Savings\u003c\/h4\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003eBerd spokes have a rolling efficiency savings of 5 watts at 30 km\/hr which was independently measured by John Karrasch.\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ch4 class=\"hawk30gold-card__title\"\u003eUnmatched Smoothness\u003c\/h4\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003eBerd spokes are the only spokes that use viscoelastic damping to dissipate high-frequency vibration, absorbing energy from gravel through time-dependent strain relaxation in the fiber. No steel spoke can do it.\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ch4 class=\"hawk30gold-card__title\"\u003eLess Fatigue, More Endurance\u003c\/h4\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003eBerd spokes filter the high-frequency vibration that wears riders down, so less buzz reaches your hands, arms, back, and saddle. You finish long gravel days fresher and stronger.\u003c\/div\u003e\n\u003ch4 class=\"hawk30gold-card__sub\"\u003e\u003c\/h4\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\n\u003ch4\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/h4\u003e\n\u003ch4 class=\"hawk30gold-card__title\"\u003e30 mm Internal Rim Width\u003c\/h4\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003eThe Sparrow50 Gold wheels are tubeless ready with a 30 mm internal rim width. A super wide 4 mm hooked bead locks the tire in place for confident retention with all tire types and protection against pinch flats at low pressure.\u003c\/div\u003e\n\u003ch4 class=\"hawk30gold-card__sub\"\u003e\u003c\/h4\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\n\u003ch4\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/h4\u003e\n\u003ch4 class=\"hawk30gold-card__title\"\u003eLightest in Class\u003c\/h4\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003eAt 1,298 grams, the Sparrow50 Gold wheels are the lightest production 50 mm depth wheels on the planet, thanks to the lightweight rims, hubs and Berd spokes weighing only 2.4 grams each.\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ch4 class=\"hawk30gold-card__title\"\u003eTalon ESL-R Hub with Tri-Coat™ Freehub\u003c\/h4\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003eOur new Talon ESL-R hubs are our fastest gravel hubs ever and feature precision machined Tri-Coat™ aluminum that resists cassette bite and surface marking.\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ch4 class=\"hawk30gold-card__title\"\u003eEqual Spoke Length (ESL)\u003c\/h4\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003eEngineered with varying hook flange widths to maintain identical spoke lengths across both sides of both wheels, simplifying service, spares, and race-day repairs.\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ch4 class=\"hawk30gold-card__title\"\u003eHigh Engagement 36 Tooth Ratchet\u003c\/h4\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003eThe ESL-R hubs feature a new lightweight dual-sprung 36 tooth ratchet freehub for instant power transfer and explosive acceleration the moment you hit the pedals.\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003ch4 class=\"hawk30gold-card__title\"\u003eEasily Convertible End Caps\u003c\/h4\u003e\n\u003cdiv class=\"hawk30gold-card__sub\"\u003eThe ESL-R front hubs feature innovative removable sleeves that easily convert between 12 mm and 15 mm axles in seconds with no tools needed.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Berd","offers":[{"title":"White \/ Talon ESL-R 12x100 Front \/ 12x142 Rear XDR","offer_id":50519211147329,"sku":"WSP5029OOXRWT","price":2395.0,"currency_code":"USD","in_stock":true},{"title":"White \/ Talon ESL-R 12x100 Front \/ 12x142 Rear MS","offer_id":50519211212865,"sku":"210000010672","price":2395.0,"currency_code":"USD","in_stock":true},{"title":"White \/ Talon ESL-R 15x110 Front \/ 12x148 Rear XDR","offer_id":50519211245633,"sku":"210000010673","price":2395.0,"currency_code":"USD","in_stock":true},{"title":"White \/ Talon ESL-R 15x110 Front \/ 12x148 Rear MS","offer_id":50519211311169,"sku":"210000010674","price":2395.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Talon ESL-R 12x100 Front \/ 12x142 Rear XDR","offer_id":50519211343937,"sku":"210000010675","price":2395.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Talon ESL-R 12x100 Front \/ 12x142 Rear MS","offer_id":50519211376705,"sku":"210000010676","price":2395.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Talon ESL-R 15x110 Front \/ 12x148 Rear XDR","offer_id":50519211409473,"sku":"210000010677","price":2395.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Talon ESL-R 15x110 Front \/ 12x148 Rear MS","offer_id":50519211442241,"sku":"210000010678","price":2395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/8372\/5377\/files\/Sparrow50_Front_Black_1024x1024_2x_1b7a141a-be01-4e96-99e9-14279bc5c015.jpg?v=1790092999","url":"https:\/\/thebicyclestation.com\/products\/berd-sparrow50-gold-carbon-wheels","provider":"The Bicycle Station","version":"1.0","type":"link"}