Join Date: Feb 2010
Bikes: to many, maybe a 100...
1 pc / 3 pc
yes you can, bearing in mind that its not the crank that has to fit, but the bottom bracket (the roundy thingy the stick thingys go round on.
there are 3 types, American (the standard), Mid (slightly smaller than american?) , Euro (old school, higher end, smaller).
but generally old bmxs had american bottom brackets, and most 3 pc cranks are american.
post some pics of that diamond back, Im rebuilding a DB Viper right now, myself..