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CycleSpeedTriathlon

Bike Speed/Sprint Skills Wind Trainer Set (48 min)

By July 21, 2014 No Comments

cassette

Explanation
Small/15 (S15) = Small chain ring, 15 rear cluster (middle)
Small/21 (S21) = Small chain ring, 21 rear cluster (one down from easiest)
Large/15 (L15) = Large chain ring, 15 rear cluster (middle)


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