Originally Posted by
sstorkel
While road riders would like you to believe that their pedals are much lighter, there often isn't a lot of difference. My $35 Shimano M520 SPD pedals weigh 370 grams. $120 Look Keo Classic road pedals weigh 338 grams and $110 Shimano 105 road pedals weigh 322. If you spent a similar amount of money on an SPD pedal you could get something in the same ballpark, weight-wise (M540 @ $90 = 346g, for instance). And lets not forget that Crank Brothers EggbeaterMTB pedals are super-light (Eggbeater SL @ $110 = 266g)! You could spend $300 on road pedals (e.g. Shimano Dura-Ace) and still not match that weight...
On the other hand, the lightest SPD pedal available is around 270 g. You can get road pedals in the ballpark of 150 g. The reason people say road pedals are lighter than mountain pedals is that it's generally true.
I have SPD A-520s on my road bike.