ROTOR Aero Crown 110x4
The Aero crown is an optional extra and completes the elegant integrated aesthetic of the spider, chainring and crank. It provides minimal air resistance, reduces drag and allows you to pedal faster with less effort. The Aero Crown reduces the possibility of entry of dirt and external elements towards the chainring side of the bottom bracket, at a point difficult to access for cleaning. Fits both the Power2max powermeters and standard rotor 4 bolt spider.