{"product_id":"challenge-gravel-grinder-pro-h-cl-black-260tpi-700x33","title":"Challenge - GRAVEL GRINDER-PRO-H-CL-Black-260tpi-700x33","description":"\u003ca href=\"https:\/\/upgradebikes.sharepoint.com\/:b:\/s\/UpgradeBikesFiles\/EV9gv1DAT3hEpxFWiXBNMS8BMSGXir2sIHsQ8I43biPJXg?e=ckg1nk\" class=\"Button btn btn-default upgattbtn\" target=\"_blank\"\u003eConsumer Product Safety Bulletin - March 13, 2019\u003c\/a\u003e\u003cbr\u003e\u003cbr\u003eMake your mark on the gravel scene with the Gravel Grinder. This tyre combines a fast rolling diamond centre with aggressive shoulder knobs that only hook-up when the terrain gets soft, muddy, or a bit sketchy.  \u003cstrong\u003eColour:\u003c\/strong\u003e Black.\u003cbr\u003e\u003cstrong\u003eTPI:\u003c\/strong\u003e 260.\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 425g.\u003cbr\u003e\u003cstrong\u003eRecommended Pressure:\u003c\/strong\u003e 33-55psi.\u003cbr\u003e\u003cstrong\u003ePuncture Protection:\u003c\/strong\u003e PPSGANZO + PPS2.\u003cbr\u003e\u003cstrong\u003eRubber Compound:\u003c\/strong\u003e SMARTPLUS.\u003cbr\u003e\u003cstrong\u003eConstruction:\u003c\/strong\u003e Handmade.\u003cbr\u003e\u003cstrong\u003eSeries:\u003c\/strong\u003e PRO.\u003cbr\u003e\u003cstrong\u003eSize:\u003c\/strong\u003e 700c.\u003cbr\u003e\u003cstrong\u003eWidth:\u003c\/strong\u003e 33mm.\u003cbr\u003e\u003cstrong\u003eCasing:\u003c\/strong\u003e SuperPoly - CORAZZAARMOR.\u003cbr\u003e\u003cstrong\u003eBead:\u003c\/strong\u003e Folding.\u003cbr\u003e\u003cbr\u003e\u003chr\u003e\u003cstrong\u003ePPS Ganzo\u003c\/strong\u003e - A higher level of puncture protection utilising a multi-component fabric strip with a tighter weave that still remains flexible.\u003cbr\u003e\u003cstrong\u003eSMART Plus Compound\u003c\/strong\u003e - Gravel specific tread compound for traction and durability.\u003cbr\u003e\u003chr\u003e\u003cimg src=\"https:\/\/images.upgradebikes.co.uk\/chanllenge_pro_icon.jpg\" class=\"upgiconht\"\u003e\u003cbr\u003e\u003cbr\u003eSuperPoly polyester is a synthetic fibre stronger and softer than nylon and resistant to water. Challenge's SuperPoly casings are the more affordable handmade tyres.\u003cstrong\u003ePRO\u003c\/strong\u003e series tyres are 220\/260\/300tpi depending on model. They are almost as supple as the Corespun Cotton but far softer than Nylon. The casing is impervious to water and so make the best value handmade tyres.\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/images.upgradebikes.co.uk\/chanllenge_pps_icon.jpg\" class=\"upgiconht\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePPS Ganzo\u003c\/strong\u003e - A higher level of puncture protection utilising a multi-component fabric strip with a tighter weave that still remains flexible.\u003cimg src=\"https:\/\/images.upgradebikes.co.uk\/chanllenge_pps2_icon.jpg\" class=\"upgiconht\"\u003e\u003cbr\u003e\u003cbr\u003eSuperPoly polyester is a synthetic fibre stronger and softer than nylon and resistant to water. Challenge's SuperPoly casings are the more affordable handmade tyres.\u003cstrong\u003ePRO\u003c\/strong\u003e series tyres are 220\/260\/300tpi depending on model. They are almost as supple as the Corespun Cotton but far softer than Nylon. The casing is impervious to water and so make the best value handmade tyres.\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/images.upgradebikes.co.uk\/chanllenge_latex_icon.jpg\" class=\"upgiconht\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eCorazza Armor\u003c\/strong\u003e - Reinforced casing for gravel specific tyres utilising double layer 220\/260TPI SuperPoly for durability and stability.\u003cbr\u003e\u003cbr\u003e","brand":"Challenge","offers":[{"title":"Default Title","offer_id":55509988508024,"sku":"CH-00536","price":69.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/9434\/1977\/files\/Challenge---GRAVEL-GRINDER-PRO-HCL-Black-260tpi-700x33_1000x1000_d192833d-bf55-4475-af57-484111685d44.jpg?v=1774308744","url":"https:\/\/www.bikeparts.co.uk\/products\/challenge-gravel-grinder-pro-h-cl-black-260tpi-700x33","provider":"BikeParts.co.uk","version":"1.0","type":"link"}