SIDI Genius X Road Shoes - Black 46 Model=Air-Liner Tubeless Insert all brands of overboots are

all brands of overboots are interchangeable

Clamp capacity: round and aero tubes from 23 to 76 mm (7/8" to 3") wide

Frame Size 21 Primary Color Black Wheel Diameter 20 Color Black

75 thread pitch

Built using the same architecture as the Guide brakes but with larger fluid reservoir and pistons it delivers even more power and heat management

SIDI Genius X Road Shoes - Black 46 Model=Air-Liner Tubeless Insert all brands of overboots areAn icon reimagined for modern riders Genius X Microfiber balances comfort and control for any riding style. Its high grade microfiber upper is supple against the foot but structurally firm delivering a secure skin friendly fit that holds under pressure. Dual NUUN dials and a High Density Instep ensure precise adjustment while the R3CC carbon composite sole and External Heel provide stable efficient power transfer on every ride. Genius X delivers long