The Shimano hollowgram cranks are plenty stiff. In fact the DA 7800/7803 cranks were the standard for stiffness for quite a while, and are still probably stiffer than 95% of the cranks out there, e.g., the SRAM stuff. Maybe the latest $500-$700 nanocarbon cranks from Zip, Easton, and FSA claim to be stiffer. The DA cranks are hollow aluminum forgings, which only Shimano figured out how to do. A hollow forged crankarm is probably stiffer than a solid aluminum piece that is not forged.framesti said:I know its stiff but have read about and seen breaks in the crank. Is the design bad?
Someone said near it tore? near the pins, and I saw a break near the pedal hole. It is hollow. Isn't solid aluminum or hollow steel better strengthwise?