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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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Tire Review: Challenge Grifo Open Cyclocross Tire Review - Cyclocross Magazine - Cyclocross and Gravel News, Races, Bikes, Media
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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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