The Rally MIPS mountain bike helmet raises the bar in comfort and protection. Extended coverage and ample vents keep you riding all day long on the toughest trails.
MIPS, "Multi-directional Impact Protection System", sets a new standard in helmet safety. Developed by brain surgeons and scientists, MIPS helps reduce rotational forces on the brain caused by angled impacts to the head.
MIPS Brain Protection System
The Boa® System lets riders easily secure and adjust helmet fit with one hand
Blendr mount system easily integrates GoPro camera and Bontrager lights accessories
Drop-in coverage on back of helmet offers extended protection
In-mold composite skeleton increases helmet integrity for larger vent variations
FlatLock dividers make helmet strap management simple through fixed position fit
Internal, recessed channels move airflow over your head to stay cool and dry
Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership
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The charts below are a great starting point to find the right size Bontrager clothing for you. Measurements reflect the actual body circumference and not the product's measurements. Stop by your local CG Store to try something on!