{"title":"ULTRA Series","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eChallenge ULTRA Series handmade tubulars are the absolute pinnacle of performance. With 1000TPI silk casings and our SMARTSOFT tread compound, they are the best performing Race Day tires you can buy. \u003c\/p\u003e","products":[{"product_id":"grifo-ultra-handmade-tubular","title":"GRIFO Ultra - Handmade Tubular","description":"\u003cdiv class=\"description-container\"\u003e\n\u003cdiv class=\"text\" style=\"text-align: start;\"\u003e\n\u003cp\u003e\u003cspan\u003eThe best all-around cyclocross tire ever created excels in wet or dry, soft packed, rocky and root-infested courses, grass, and more. The Grifo features fast rolling knobs and a center section that offers excellent pedaling and braking traction. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eThis handmade SETA EXTRA (Ultra) tubular uses an ultra-compliant sealed Silk 1000TPI casing for unmatched performance with our SmartSoft Compound\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e tread and a Latex Inner Tube with 60mm valve stem.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003cspan\u003eRemember you may need to use\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e \u003ca href=\"https:\/\/challenge-tires-usa.myshopify.com\/products\/presta-valve-extenders\" style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eChallenge Presta Valve Extenders\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e when mounting tubulars on deep-profile rims.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0852\/2930\/6155\/files\/BugRow_CX_Ultra_240x240.png?v=1730137127\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Challenge Tires","offers":[{"title":"700x33C \/ Cream","offer_id":53009830576451,"sku":"11707","price":129.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/6068\/3331\/files\/GRIFO-Ultra-HTU-33-Cream.jpg?v=1744856250"},{"product_id":"baby-limus-ultra-handmade-tubular","title":"BABY LIMUS Ultra - Handmade Tubular","description":"\u003cdiv class=\"description-container\"\u003e\n\u003cdiv class=\"text\"\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eThe Baby Limus is Challenge's all-around cyclocross tire designed for races with constantly changing conditions. This tire is ready to take on wet sand, sticky mud or dry, fast courses. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eThis handmade SETA EXTRA (Ultra) tubular uses an ultra-compliant sealed Silk 1000TPI casing for unmatched performance with our SmartSoft Compound\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e tread and a Latex Inner Tube with 60mm valve stem.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eRemember you may need to use\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e \u003ca style=\"color: rgb(0, 0, 0);\" href=\"https:\/\/challenge-tires-usa.myshopify.com\/products\/presta-valve-extenders\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eChallenge Presta Valve Extenders\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e when mounting tubulars on deep-profile rims.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0852\/2930\/6155\/files\/BugRow_CX_Ultra_240x240.png?v=1730137127\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Challenge Tires","offers":[{"title":"700x33C \/ Cream","offer_id":53009832149315,"sku":"11857","price":129.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/6068\/3331\/files\/BABY-LIMUS-Ultra-HTU-33-Cream.jpg?v=1744856317"},{"product_id":"dune-ultra-handmade-tubular","title":"DUNE Ultra - Handmade Tubular","description":"\u003cp\u003e\u003cspan\u003eThe Dune is the Belgian's secret skill-building tire. Like the Chicane, this tire is a super fast rolling sand tire that also works incredibly well on frozen courses. The small shoulder knobs are intended for riders with great bike handling skills. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eThis handmade SETA EXTRA (Ultra) tubular uses an ultra-compliant sealed Silk 1000TPI casing for unmatched performance with our SmartSoft Compound\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e tread and a Latex Inner Tube with 60mm valve stem.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eRemember you may need to use\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e \u003ca style=\"color: rgb(0, 0, 0);\" href=\"https:\/\/challenge-tires-usa.myshopify.com\/products\/presta-valve-extenders\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eChallenge Presta Valve Extenders\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e when mounting tubulars on deep-profile rims.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0852\/2930\/6155\/files\/BugRow_CX_Ultra_240x240.png?v=1730137127\"\u003e\u003c\/p\u003e","brand":"Challenge Tires","offers":[{"title":"700x33C \/ Cream","offer_id":53009834082627,"sku":"11872","price":129.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/6068\/3331\/files\/DUNE-Ultra-HTU-33-Cream.jpg?v=1744856424"},{"product_id":"pista-ultra-handmade-tubular","title":"PISTA Ultra - Handmade Tubular","description":"\u003cp\u003e\u003cspan\u003eWhether the velodrome surface is wood or concrete, nothing holds the sprinters line like the Pista.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis handmade SETA EXTRA (Ultra) tubular uses an ultra-compliant sealed Silk 1000TPI casing for unmatched performance with our SmartSoft Compound\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e tread and a Latex Inner Tube with 48mm valve stem.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003cspan\u003eRemember you may need to use\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e \u003ca href=\"https:\/\/challenge-tires-usa.myshopify.com\/products\/presta-valve-extenders\" style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eChallenge Presta Valve Extenders\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e when mounting tubulars on deep-profile rims.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0852\/2930\/6155\/files\/BugRow_Track_Ultra_240x240.png?v=1730141127\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e","brand":"Challenge Tires","offers":[{"title":"700x22C \/ Cream","offer_id":53009838571843,"sku":"10006","price":103.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/6068\/3331\/files\/PISTA-Ultra-HTU-22-Cream.jpg?v=1744856560"},{"product_id":"flandrien-ultra-handmade-tubular","title":"FLANDRIEN Ultra - Handmade Tubular","description":"\u003cdiv class=\"description-container\"\u003e\n\u003cdiv class=\"text\" style=\"text-align: start;\"\u003e\n\u003cp\u003e\u003cspan\u003eDeveloped to embody the spirit of mid-winter cyclocross racing, the Flandrien is named after the resilient riders who thrive in changing conditions. With a bit more cornering traction in both dry and lightly wet or muddy conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eThis handmade SETA EXTRA (Ultra) tubular uses an ultra-compliant sealed Silk 1000TPI casing for unmatched performance with our SmartSoft Compound\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e tread and a Latex Inner Tube with 60mm valve stem.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003cspan\u003eRemember you may need to use\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e \u003ca href=\"https:\/\/challenge-tires-usa.myshopify.com\/products\/presta-valve-extenders\" style=\"color: rgb(0, 0, 0);\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eChallenge Presta Valve Extenders\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/span\u003e when mounting tubulars on deep-profile rims.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0852\/2930\/6155\/files\/BugRow_CX_Ultra_240x240.png?v=1730137127\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Challenge Tires","offers":[{"title":"700x33C \/ Cream","offer_id":53726811619651,"sku":"11885","price":129.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/6068\/3331\/files\/11885_H-TUFlandrienULTRA33Silk_productpage.png?v=1758878071"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0941\/6068\/3331\/collections\/Collection_ULTRA.jpg?v=1744856775","url":"https:\/\/challengetires.com\/collections\/ultra-series.oembed","provider":"Challenge Tires","version":"1.0","type":"link"}