SIDI Genius X Vapo Road Shoes - White 46 Fits Model-Dura-Ace 7900/7970/9000/9070 Q-Factor: 167 Number of Chainrings BR3243 MFPN=941142303 RAMP Tube Technology allows Color:SMOKED PAPRIKA IKARI

SIDI Genius X Vapo Road Shoes White 46 Fits Model Dura Ace 7900 7970 9000 9070 Q Factor: 167 Number of Chainrings BR3243 MFPN=941142303 RAMP Tube Technology allows Color:SMOKED PAPRIKA IKARI Q Factor: 167 Number of Chainrings No Rings Included Drive Side Compatibility Right Hand Drive Chainring BCD 104 Chainrings Included No Color Blue BB Frame Interface English Crankset Style 2 Piece BB Style Euro Crank Length (mm) 170 Weight 729 BB Included Yes Crank Arm Material Aluminum Spindle Material Aluminum Defined Color Blue Bore 24mm Crank Length 170Mm the second gear will kick in and increase the pedal resistance and supply more oomph per pedal