Genuine replacement parts
Fit systems work hard to keep your helmet secure and to maximize safety.
- Original equipment replacement Boa® System for your Bontrager helmet
- Compatible with Boa-equipped Bontrager helmets, except Velocis MIPS and WaveCel
- Can also be used to upgrade your Headmaster-equipped Bontrager helmet to the Boa System
- Full length fit system designed for use with medium and large sized helmets
- Short length fit system designed to optimize the fit of small sized helmets