Challenge Grifo Open Tubular Tires: Bike Accessories Review
(Ryan Heffernan)

Challenge Grifo Open Tubular Tires: Bike Accessories Review

Challenge Grifo Open Tubular Tires: Bike Accessories Review
John Bradley

CHALLENGE‘s handmade and all-conditions GRIFO OPEN TUBULAR TIRES offer tubular-like suppleness but mount like a clincher.

From Outside Magazine, April/May 2021 Lead Photo: Ryan Heffernan
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