Summary: I am pretty torn over these pedals. I have used Speedplay over the past 10 years or so and move to the Zeros about a year ago. The pedals themselves I love. The problems I am having all stem from the cleat. The most egregious flaw is the amount of side to side rocking. I've just replaced the cleats and had the shop install them but it hasn't gone away. Perhaps it is shoe (Sidi Genius 3) compatibility? Over time, this has become a deal breaker for me. Also, I broke off a small plastic tab on the cleat which serves as a stop for the metal ring that locks around the pedal. Once this tiny little piece of plastic broke off, clipping in and especially out became noticeably more difficult. I prematurely replaced them as it became a real hazard if I had to clip out quickly. I love them. I hate them.
Strengths: light weight, adjustable float (I have a reconstructed right knee), secure engagement, low stack height, and pedals themselves have been maintenance free
Weaknesses: Side to side rocking. Cleats are not designed to last and are expensive.
Favorite Ride: Chicago North Shore Evanston to Lake Forest
Bike Setup: Cannondale Six13 DuraAce
Summary: These Speedplay Stainless Zero Pedals were the missing link. I have been riding with Shimano SPDs for 20 plus years. There is no comparison. No problems installing. Left the 15 degrees of play in them and applied lock tight. I bought the ones with 1/2 inch longer spindles. Being 6 ft 3 with wide hips, I find them very comfortable. My right knee used to hurt a little but no more. So much easier to accelerate. Feels like feel a cemented to the crank. Very easy to walk in with coffee shop covers. Not so easy without them. Wish I had started using speedplays ten years ago.
Strengths: Knee stopped hurting when using.
Weaknesses: None that I can tell.
Similar Products Used: Shimano SPD
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Summary: I use cleat covers everytime I walk with these on. I'm on my 2nd cleat in 3-1/2 years, riding around 3,500 miles a year. They are easy to clip into, easy to clip out of (and, despite what had been said earlier, can be unclipped from either direction, outwards or inwards). As long as you grease them, and this is done without dismantline anything simply by opening up the grease port and pumping grease inside), they will last a long time. I've had to replace two screws that, somehow, worked their way out of the pedal body though, but calling the company got me the screws for free. The float takes a little getting used to but, once used to it, is VERY easy on the knees. Make sure you oil the cleats once in awhile.
Strengths: Float is great for the knees. Easy clipping into and out of.
Weaknesses: Cleat replacement is expensive at $40.
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Summary: excellent and independent adjustment for Q-factor and float. Ability to move cleats further back via (expensive!) optional metal baseplates. These rear-set baseplates should be standard, IMHO. Easy to clip in and out, double sided entry.
Strengths: see review summary
Weaknesses: Expensive optional parts (rear-set baseplates and shims and cleat covers) and expensive cleats. Require cleat covers, which should be included into each set of new pedals as standard. Else expensive cleats will wear out fast and rubbish in cleats makes it hard or impossible to clip in. So wear the cleat covers and dont step into mud/sand without them.
Similar Products Used: Shimano SPD-SL Ultegra pedals
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Bike Setup: BMC Streetfire, full Dura-Ace, Ksyrium SSC SL's
Summary: The cleats mount easily even with the unfamiliar 4 hole adapter plate. The Spindle is still very close to the bottom of the foot and the pedals operate smoothly during engagement and disengagement. Very impressed. More as it develops. Less than 100 miles so far...
Strengths: Light weight, few moving parts, easy set up, They look cool too!!
Weaknesses: Unsure of how contact area will affect long term comfort. (Feels OK after 40+ mile ride though)
Similar Products Used: LOOK Delta, Speedplay Frogs for MTB
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