For the first time ever, the RockShox SID goes to a 35mm stanchion with the introduction of the 120mm SID Ultimate and SID Select. The jump to a 35mm stanchion is a seemingly natural progression for the fork, considering the capability of even the fastest XC and light trail bikes these days. Vital took receipt of a RockShox SID Ultimate and have logged a few miles as well as dug into the guts of this new cross country fork to see what makes it tick and who may benefit most from this new technology.

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