{"product_id":"challenge-griffo-pro-tubular","title":"Challenge Grifo Pro (Clincher)","description":"\u003cp data-path-to-node=\"2\"\u003e\u003cb data-path-to-node=\"2\" data-index-in-node=\"0\"\u003eLegendary CX Traction. Open-Casing Convenience.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"3\"\u003eThe engineering highlight of the \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.challengetires.com\" class=\"ng-star-inserted\" target=\"_blank\"\u003eChallenge Grifo Pro Clincher\u003c\/a\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e is its \u003cb data-path-to-node=\"3\" data-index-in-node=\"69\"\u003eopen-tubular SuperPoly casing architecture paired with a fast-cleaning tread design\u003c\/b\u003e. Built using the same handmade process as Challenge's world-class tubulars, the 300 TPI casing folds smoothly over rim beds and deforms fluidly over off-camber roots, ruts, and slippery grass sectors. Featuring low-profile, fast-rolling center knobs and tall, biting shoulder lugs, the Grifo Pro sheds mud rapidly to maintain constant traction through technical pit sections and sharp corners.\u003c\/p\u003e\n\u003cp data-path-to-node=\"4\"\u003e\u003cb data-path-to-node=\"4\" data-index-in-node=\"0\"\u003eWhy the Challenge Grifo Pro Clincher Belongs on Your Wheelset:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003eIconic All-Rounder Tread Pattern:\u003c\/b\u003e Alternating center blocks minimize rolling resistance on hardpack and tarmac link-ups, while aggressive side knobs dig deep into slick mud and off-camber banks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eHandmade 300 TPI SuperPoly Casing:\u003c\/b\u003e Delivers exceptional suppleness and trail feedback, bridging the gap between standard vulcanized clinchers and traditional glued tubulars.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003ePuncture Protection System (PPS):\u003c\/b\u003e Features a tough, high-density fabric sub-tread layer engineered to shield your inner tube against sharp flint, thorns, and gravel impacts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003eOpen-Tubular Installation Simplicity:\u003c\/b\u003e Mounts easily onto standard hooked alloy or carbon clincher rims with standard inner tubes, making tire swaps and roadside tube repairs fast and hassle-free.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,4,0\"\u003e\u003cb data-path-to-node=\"5,4,0\" data-index-in-node=\"0\"\u003eSelf-Cleaning Mud Clearance:\u003c\/b\u003e Generous knob spacing prevents mud buildup and packing, ensuring your tread stays clear and functional on greasy race courses.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"6\"\u003e\u003cb data-path-to-node=\"6\" data-index-in-node=\"0\"\u003eTechnical Specifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"7\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,0,0\"\u003e\u003cb data-path-to-node=\"7,0,0\" data-index-in-node=\"0\"\u003eDiscipline:\u003c\/b\u003e Cyclocross \/ Mud \/ Hardpack \/ Grass\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,1,0\"\u003e\u003cb data-path-to-node=\"7,1,0\" data-index-in-node=\"0\"\u003eTire Type:\u003c\/b\u003e Clincher (Open Tubular – Requires Inner Tube)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,2,0\"\u003e\u003cb data-path-to-node=\"7,2,0\" data-index-in-node=\"0\"\u003eCasing:\u003c\/b\u003e SuperPoly (300 TPI)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,3,0\"\u003e\u003cb data-path-to-node=\"7,3,0\" data-index-in-node=\"0\"\u003eBead:\u003c\/b\u003e Folding Aramid Bead\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,4,0\"\u003e\u003cb data-path-to-node=\"7,4,0\" data-index-in-node=\"0\"\u003eWidth:\u003c\/b\u003e 700x33c (33-622 ETRTO)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,5,0\"\u003e\u003cb data-path-to-node=\"7,5,0\" data-index-in-node=\"0\"\u003ePressure Range:\u003c\/b\u003e 2.1 – 3.1 Bar (30 – 45 PSI)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,7,0\"\u003e\u003cb data-path-to-node=\"7,7,0\" data-index-in-node=\"0\"\u003eWeight:\u003c\/b\u003e ~355 grams\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"9\"\u003e \u003c\/p\u003e\n\u003cp data-path-to-node=\"9,0\"\u003e\u003cb data-path-to-node=\"9,0\" data-index-in-node=\"0\"\u003eThe Alegro Perspective:\u003c\/b\u003e Not every cyclocross racer wants to manage glued tubular wheelsets or mess with high-pressure sealant burps on narrow CX tubeless setups. The Grifo Pro Open Clincher is the perfect solution. Because Challenge uses a handmade 300 TPI casing instead of stiff vulcanized rubber, you get that plush, supple ground-conforming feel that grips amazingly well on wet grass and mud, but with the simple maintenance of a standard tube and rim setup.\u003c\/p\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003eProven CX Tread Mastery. Supple Handmade Feel. Dominate Race Day with Challenge.\u003c\/b\u003e\u003c\/p\u003e","brand":"Challenge","offers":[{"title":"Default Title","offer_id":67727256682719,"sku":null,"price":120.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/5452\/3103\/files\/152.jpg?v=1790620465","url":"https:\/\/alegrocycles.com\/products\/challenge-griffo-pro-tubular","provider":"Alegro Cycles","version":"1.0","type":"link"}