The Destro crank has been developed and tested over the past year to be super tough without excessive weight. These bad boys come with a 22mm sealed mid bottom bracket allowing you to bolt them on and getting riding as soon as possible. The larger 22mm spindle keeps these things stiff, while the heat-treated arms mean you won’t be bending these things anytime soon. The Destro crank has been developed and tested over the past year to be super tough without excessive weight. These bad boys come with a 22mm sealed mid bottom bracket allowing you to bolt them on and getting riding as soon as possible. The larger 22mm spindle keeps these things stiff, while the heat-treated arms mean you won‚Äôt be bending these things anytime soon. Seamless 4130 chromoly tubing, liquid post heat-treated 22mm 4130 butted chromoly spindle Includes Radio sealed mid bottom bracket set and assembly tool RSD/LSD Compatible