Speedplay Syzr and Brass Knuckles pedals

Clipless and flats options deliver efficient power transfer and performance

Pedals Sea Otter Classic
Speedplay Syzr

The Syzr pedal implements a cleat interface that minimizes play.

Mtbr paid Richard Byrne a visit during the Sea Otter Classic to learn about the massive effort he put in to designing the Syzr pedal. To design a pedal with no cleat-to-pedal play, yet provide friction free float is quite a challenge in a mountain bike application where there is dirt, mud, and constant abuse.

The Syzr pedals deliver power more efficiently because of this lack of play between the rider and bike. Other MTB pedal systems waste energy with every pedal stroke by transferring rider power through the spongy rubber tread of the shoe sole. Most riders recognize that a stiffer mountain bike shoe is more efficient than a running shoe for example. But the same efficiencies can be gained by using the optimal pedal to shoe interface.

Claimed Weight and Price

Chrome-Moly pedal each; 338g per pair, $169
Stainless pedal each; 312g per pair, $199
Titanium pedal each; 275g per pair, $420

Meanwhile, the Brass Knuckles pedal is Speedplay’s attempt at a well-engineered flat pedal. They are 13.5mm thick for improved power transfer, and feature unique and proprietary, replaceable star-pattern studs for optimal traction. Like all Speedplay pedals, Brass Knuckles can be easily serviced with a convenient built-in grease-injector port.

Brass Knuckles

Brass knuckles are engineered to perform and last.

Key features
  • 12mm forged chrome-moly spindle for strength.
  • 13.5mm thickness
  • One needle bearing and two cartridge bearings per pedal, no plastic bushings
  • Double sealed for improved bearing protection
  • Proprietary, replaceable star-pattern studs for maximum sole traction
  • Built-in grease-injection port for easy maintenance
Claimed Weight and Price

Chrome-Moly: 395 grams, $160.
Chrome-Moly Polished: 395 grams, $175.

Photo Thumbnails (click to enlarge)

About the author: Francis Cebedo

The founder of mtbr and roadbikereview, Francis Cebedo believes that every cyclist has a lot to teach and a lot to learn. "Our websites are communal hubs for sharing cycling experiences, trading adventure stories, and passing along product information and opinions." Francis' favorite bike is the last bike he rode, whether it's a dirt jumper, singlespeed, trail bike, lugged commuter or ultralight carbon road steed. Indeed, Francis loves cycling in all its forms and is happiest when infecting others with that same passion. Francis also believes that IPA will save America.


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  • azimiut says:

    I like my frog pedals, I hope they keep making them. Only problem is the cleat wears out fairly quickly.

  • froze says:

    Why on earth would SpeedPlay go from a very simple, highly functional, very reliable pedal design of the Frog for a more complicated design that is common with other pedals with all the same issues of other pedals if not more so as witnessed by other users here? I understand on their website that the Frog is still available, I love that pedal, I hope they don’t do away with it and replace it completely with SYZR. As one poster mentioned the cleats wear out quickly but I’ve used them now for 4 seasons and still working ok but they are clicking.

    Fellow cyclists: cycling has become the new golf of corporate types, and thus big money has entered the scene, and like golf, once the manufactures realized these people will spend obscene amounts of money for anything with fancy do nothing words prices go skyrocketing to make huge profits at the expense of common everyday cyclists who can’t drop money like that for stuff, which is why a SpeedPlay thinks they can get away with charging $420 for a pedal worth $100 retail, and people will think if it cost more it must be better and SpeedPlay is betting on that mentality.

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