SIDI Physis Mountain Clipless Shoes - Sand 39 Length-344 Fixed-gear lockrings with an outside

Fixed-gear lockrings with an outside diameter of 41 to 44 mm

Top-of-the-line rear derailleur with generous use of carbon fiber and titanium for maximum performance at minimal weight

ASPD - Addix Speed compound features improved rolling resistance while also increasing durability and and overall grip

Model 104 Round Ring Type Single (Anti-Chain Drop) Mount 4x104mm Teeth 32 Oval/Round Round Color Black Bcd 104 Size 32T

SIDI Physis Mountain Clipless Shoes - Sand 39 Length-344 Fixed-gear lockrings with an outsidePhysis 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