If you're not sure which EPS size your helmet has it should be printed inside the helmet and visible when the headliner and cheek pads are removed

the Ninja CO2 frees up bag space

They offer exceptional clarity across the entire field of view

MATERIAL - Aluminum / Engineering grade plastic

5 titanium tubing

Cateye Micro Bell OH-2400 with Flextight Bracket PLP|EMTB Optimised If you're not sure whichMake some noise with the Cateye Micro Bell. It is a tool free bell that is easy to mount and can be attached quickly to handlebars from 19 32 mm. It can even be mounted around your steerer tube spacers if you have room. Made of solid brass and plastic. 22mm in diameter.