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Glide Rings
These upper headsets are for Trek frames with molded-in internal bearing cups
8mm cage thickness)
Allows free movement on the saddle to shift weight around in aggressive riding positions
Specialized bg sl footbed bg fitting green 36-37 MFPN=19861-02 Glide RingsBody Geometry Footbeds are ergonomically designed and scientifically tested to increase power, endurance, and comfort by optimizing hip, knee, and foot alignment. Body Geometry Footbeds measurably increase power, reduce time to exhaustion, and reduce injury by aligning hip, knee, and foot. Combine Body Geometry shoes, footbeds, and wedges to maximize performance benefits. Customized longitudinal arch and metatarsal support with Red+, Blue++, or
