Hmm Im thinking they probably are compatible. I have egg beaters on my mountain bike and Quattros on my road bike (both pedals are made by Crank Brothers) and the cleats are pretty much the same. I can clip my mountain bike shoes into my Quattro road pedals but Crank Brothers recommends shaving a little off your mountain bike shoe to make connection between the shoe and pedal a little easier. The Quattros are basically an egg beater with a platform around them. I love my Crank Brothers pedals.
