SIDI Physis Mountain Clipless Shoes - Sand 41.5 Model=Caliper Cover Kit A spring upgrade that increases

A spring upgrade that increases air-spring volume

and 4oz ChainJ chain lube

8mm Rise 10mm Width 800mm Upsweep 5 Deg Back Sweep 7 Deg Material Aluminum Color AluGold Weight 315g

Dent-proof composite shell built around an aluminum frame

The shoulder knobs are laid out in an aggressive stance ready for precise turns

SIDI Physis Mountain Clipless Shoes - Sand 41.5 Model=Caliper Cover Kit A spring upgrade that increasesPhysis is designed to deliver all the freedom to top performance. The total carbon stiffness 11 sole with gripping rubber inserts meets Ergofeel anatomic design to preserve the foots natural functionality. Matched by a premium welded upper the shoes deliver the greatest balance of comfort and lightness so that fatigue comes at last. The foot is solidly stabilized with Solid Strap a technology that SIDI patented to eliminate straps tension loss during