Stance width is simple: it’s the distance from the center of the pedal body, but it’s application is much more complex when we consider the footThomas McDaniel / Immediate Media
If we could simply measure left to right, stance width might look something like thisThomas McDaniel / Immediate Media
Knee Q-angle and stance width are very much relatedThomas McDaniel / Immediate Media
Q-angle, stance width and crank Q-factor should not be mistaken, they are not the same thing (but they are correlated)Thomas McDaniel / Immediate Media
This is what an ideal stance width would look like, as this rider’s off-bike hip, knee, foot alignment looks like thisThomas McDaniel / Immediate Media
In this rider’s case, the stance width seems too narrowThomas McDaniel / Immediate Media
With axle extenders in place, this rider now looks like things are in alignmentThomas McDaniel / Immediate Media
This rider suffers from too much stance width. Off the bike they do not posses this ‘kinked’ kneeThomas McDaniel / Immediate Media
Axle extenders, pedal spacers and pedal spindles are all ways to affect stance widthThomas McDaniel / Immediate Media
25mm axle extenders can help riders find proper stance width, but be warned, they can void warranty on some cranksThomas McDaniel / Immediate Media
Pedal washers are 1mm extra stance and most crank arms can accommodate 3 and still have proper thread engagement — pedal washers are not suitable for all cranksThomas McDaniel / Immediate Media
To avoid any warranty issues, pedals are the real solution to finding proper stance width. Speedplay’s various spindle lengths can be used during a fitThomas McDaniel / Immediate Media
Speedplay’s Determinator is a super slick way to find proper stance width in short orderThomas McDaniel / Immediate Media
Commitment to fit? Speedplay has riders covered not just with road but also mountainThomas McDaniel / Immediate Media
Australian brand Keywin also offers a sizing kit and the possibility to accommodate 49–65mm spindle lengthsThomas McDaniel / Immediate Media
Keywin CRM and Carbon pedals come in five different spindle lengths to accommodate proper stance widthThomas McDaniel / Immediate Media