Join Date: Mar 2005
Location: SF Bay Area, California
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Yeah, the 505 pedals stunk, as did the old 515 design that has been replaced.
The whole 520/540/959 lineup compares to Shimano's old 535/737 line, with easy action but improved mud clearing.
The 520s are good, too, but on mine the chrome quickly began to flake from the binding surface and rusted, along with the spring (Shimano is warrantying them). I presume the 540s have a better finish.