Shimano SPD-SL vs Look Kéo: what are the important differences between the two most popular pedal systems for road cyclists? cycling
designs for road cyclists. They look very similar so to help you decide which to choose, let’s take a deep dive into the details of the two systems.
Perhaps the biggest difference between the two systems is in how the float works and feels when you’re using cleats that provide a lot of movement. Look’s nine-degree red cleats and Shimano’s six-degree yellow cleat feel in use like they provide similar amounts of movement. However, Shimano’s cleat allows your foot to move around a point in the middle of the cleat; Look’s move around the tip.
More broadly, Cavell says, “Both SPD-SL and Look are well designed and stable pedalling platforms with a choice of float profiles to suit most riders. Not sure I see too much difference in the pedal real estate but their functionality and ‘feel’ are different enough to give a different proposition to riders.”
Look say their pedals with conventional springs have a release torque that’s adjustable between 8 and 12 Nm, while the Blade series pedals come with a carbon fibre leaf spring that needs 16Nm of torque to get out and include a second spring that takes it down to 12Nm. A 20Nm spring is available separately.Shimano don’t specify the range of release tension of their pedals anywhere we’ve been able to find.
Both Look and Shimano offer a range of cleats with different amounts of float. For your Kéo pedals you can get black cleats with no float, grey cleats with 4.5 degrees of float and red cleats with nine degrees of float.Shimano also colour-code their cleats. Fixed cleats have red bits on them, cleats with blue trim have two degrees of float, and yellow-decorated cleats have six degrees of float.
pedals Mat Brett reviewed have a 66mm-wide contact surface, a lot more than the 52mm of my old PD-M540s. I measured a pair of Kéo Blades at 64mm wide, so Look is clearly on the same page.Stack is the height of the sole above the pedal axle, and it’s generally considered to be a good idea to make it as low as possible; for the same reasons that a large, wide contact patch is good: improved stability. That’s not a trivial task.
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