In this article I will review the Alugear Aero Boost Chainring for Shimano Direct Mount, which is one of the very few aero chainrings for a mountain bike. I’m riding a Rotor no-Q Aero chainring on my Canyon Ultimate CF SLX 8 and a Wolf Tooth Aero Chainring for Shimano GRX 820 on the Canyon CF SL 8 gravel bike.
