View more images
Thor and Pro Circuit have a legendary history together and now you can run the Quadrant Pro Circuit helmet that features the same graphic scheme as the team helmet. Join the Monster Army and run the officially licensed team graphic.
- Blended Acrylonitrile Butadiene Styrene and Polycarbonate shell provides maximum coverage without excess weight.
- Molded roost guard for added protection.
- Oversized forehead venting.
- Direct flow mouth guard with mesh filter.
- Dual-density expanded polystyrene liner.
- Plush removable / washable comfort liner.
- Molded rear goggle strap holder.
- DOT and ECE 22.05 approved.
