I bought into the "6c's are the lightest downhill cranks" claim and believed they would be twice as tough as I would ever need. I really wanted to like these cranks, and I did for about 3 months. They are super stiff, super light, and look very cool. But like every aluminum crank I have owned since I was a kid in the late 70's, the arm to spindle joint deformed and developed slop. I mostly ride enduro type trails with small to medium jumps. Good Gawd, I'm a 185 lb 50 yo that doesn't crash hard and very conscious about clean parts, grease, and torque settings. I really don't believe I abused this part. The carbon part is great, but aluminum just sucks. Does anyone have any recent experience with Profile chromoly MTB cranks? Their BMX set were the only ones to ever be good to me. I want to put some on my flat black Mojo 3 with a SRAM XO1 1x11 drivetrain. In Chrome to loudly announce that I'm using steel that works...if it works.