Subrosa 2021 Malum 22" BMX Bike. The Malum 22” is back and better than ever! With 22” becoming more and more popular, Subrosa have had their ear to the ground listening to what fans want. They’ve updated the frame geometry and of course, it’s still 100% chromoly. It's been lightened up and spec’d with aftermarket parts from The Shadow Conspiracy and Rant.