Pedal Stance Widths
Pedal Spindle Width
Pedals are largely a standard width +- a mm. However, there are some odd-balls and a few options for wider.
Shimano:
Ultegra 8000 – 52mm (+4mm option–56mm)
Dura Ace 9100 – 52mm (+4mm option–56mm)
M520 - 55mm
LOOK:
Blade, Max, Sprint, and Classic (all versions) – 53mm
Keo pedals have 2mm longer pedal thread than other pedals
Wahoo Speedplay:
Zero 53mm
Zero Stainless custom lengths: 56mm, 59mm and 65mm
Crank Bros:
Eggbeater, Candy, Mallet, 505, Double Shot – 52mm
Extended Spindle Kit (sold separately) for Candy, Mallet, 505, Double Shot + 5 – 57mm.
SQ Lab:
50mm (-5)
55mm (Standard)
63mm (+8)
70mm (+15)
Favero
DUO - +54 mm
Assioma DUO-Shi measures +64mm with the PD-R7000/R550/R540 pedal bodies and +65mm with the PD-R8000/6800.
Garmin
Rally Q-factor: 53 mm (55 mm with provided 2 mm washer)