![Challenge Unveils Grifo Race Clincher, Hints at New Gravel and Fat Bike Tires, Colors - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media Challenge Unveils Grifo Race Clincher, Hints at New Gravel and Fat Bike Tires, Colors - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media](https://www.cxmagazine.com/wp-content/uploads/2014/03/challenge-cyclocross-gravel-tires-cxmagazine-img_9870-e_1.jpg)
Challenge Unveils Grifo Race Clincher, Hints at New Gravel and Fat Bike Tires, Colors - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media
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Challenge Goes Big with 38mm Cyclocross Tubulars and Tubeless Tires, Unveils Team Edition Handmade TLR - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media
![Challenge makes Pro-only Team Edition Red cross tubulars available for very limited time - Bikerumor Challenge makes Pro-only Team Edition Red cross tubulars available for very limited time - Bikerumor](https://bikerumor.com/wp-content/uploads/2020/12/Challenge-Pro-only-Team-Edition-cyclocross-tubulars_Bombtrack-Tension-C-of-Gosse-van-der-Meer_Gossinki-racing_Grifo-TE-Red.jpg)
Challenge makes Pro-only Team Edition Red cross tubulars available for very limited time - Bikerumor
![Challenge Unveils Grifo Race Clincher, Hints at New Gravel and Fat Bike Tires, Colors - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media Challenge Unveils Grifo Race Clincher, Hints at New Gravel and Fat Bike Tires, Colors - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media](https://www.cxmagazine.com/wp-content/uploads/2014/03/challenge-cyclocross-gravel-tires-cxmagazine-img_9882-e_1.jpg)
Challenge Unveils Grifo Race Clincher, Hints at New Gravel and Fat Bike Tires, Colors - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media
![Amazon.com : Challenge Grifo Cross Open Tubular Tire (Clincher) (Black/Brown, 33-mm) : Bike Tires : Sports & Outdoors Amazon.com : Challenge Grifo Cross Open Tubular Tire (Clincher) (Black/Brown, 33-mm) : Bike Tires : Sports & Outdoors](https://m.media-amazon.com/images/I/61NumkjNbTL._AC_UF1000,1000_QL80_.jpg)