Corroding Pedals

by Pisiform   March 22, 2013  

Advice on new pedals please!

I bought a Genesis Equilibrium 20 last year which came with white Shimano SPD M520 pedals.

Although the pedals themselves are functionally great and what I need, I've not been impressed to see the rapid corrosion this winter developing around the bolt end which screws into the cranks as well as on the body of the pedal where my cleats have scratched them.

I've switched them to a pair of A520s which is the single sided touring pedal but they're heavy and I miss the double sided ease of use

I'm after a good recommendation for a double sided SPD pedal that won't corrode after 9 months.

Thanks in advance

11 user comments

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m540's instead ... slightly lighter, slightly better
built and so far on the various mountain bikes I've
had over the years totally bombproof Smile

still on the 3rd switch-back of Bwlch !

posted by therevokid [917 posts]
22nd March 2013 - 10:05


I had the exactly same problem this winter, I did clean up my 520's and it worked for a week.

Then I went to the LBS, looked at their stock and ended up with a pair of PD-M530's GREAT

Gkam84's picture

posted by Gkam84 [9316 posts]
22nd March 2013 - 10:21


I've had a M540 shear on me before around the tightening bolt due to corrosion or fatigue. Almost pinged into my eye when it went!

I've stopped commuting with clip in pedals because I prefer to wear normal looking clothes these days when not on proper rides, but I had considered the Crank Bros egg beaters because they've got more float.

posted by bashthebox [762 posts]
22nd March 2013 - 10:30


i normally take a stiff wire brush to my 520s when they start looking scruffy and give them a wipe with a greasy cloth. they tend to scrub up okay...

Dave Atkinson's picture

posted by Dave Atkinson [7805 posts]
22nd March 2013 - 10:42


same here - but when you've got salt and multiple different metal component in contact, you'll get some surface corrosion. just scrub them up, or failing that replace when they start looking too tatty, if you care about such things.

PJ McNally's picture

posted by PJ McNally [597 posts]
22nd March 2013 - 11:00


Fair enough. I'll treat them to a bit of love and care initially.

Is the M540 actually made of anything different or would I expect the same problems with them?

posted by Pisiform [52 posts]
22nd March 2013 - 11:34


Speedplay Zero Titanium Smile

However I use the stainless version on my winter bike and they haven't corroded. I have had to take them apart and give them a good clean now and again though.


Squiggle's picture

posted by Squiggle [414 posts]
24th March 2013 - 1:13


...or you could just go to motorbike dealer and buy a can of ACF50. 9 months winter riding without corrosion is pretty good init? Thinking


Squiggle's picture

posted by Squiggle [414 posts]
24th March 2013 - 1:17


Look Quartz. 2 sided, very light & no corrosion problems in 2 years of use. GT85 after every wet ride.

Manglier's picture

posted by Manglier [90 posts]
24th March 2013 - 10:33


The rusty axle bolt is a common problem with both the M520 and A520. M540 and A600 are the next models up and do not suffer the same type of corrosion at the axles. A520 are around 100g lighter than M520 and about the same weight as M540. If you want to keep your bike looking good then you will have to give it a good clean up after every use. There's no substitute for regular mantenance and cleaning.

Ah! Condor

posted by Bedfordshire Clanger [345 posts]
24th March 2013 - 11:24


I use Shimano M420 pedals on the mtb , only thing they get is a hose wash after a ride no corrosion plus they can be used without cleats for a quick pop to the shops due to the slightly recessed clip mechanism

posted by chiv30 [997 posts]
24th March 2013 - 11:48