Cone cup has a smaller outside diameter, fits better, and prevents the carbon from getting marred
Sold in singles
The Shallow Cone Cup is a solution for Trek Speed Concept frames requiring a smaller outside diameter cone cup on the drive side of the trainer than the pre-installed cone cup
While the Small Cone Cup (pre-installed on trainers manufactured after December of 2009) will fit into the speed concept carbon frames, it does rub on the drive side
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