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Overview
Less wind. More win.
When speed is your top priority and every watt counts, reach for the helmet that'll cut through the wind to save you seconds. Ballista is Trek's fastest, most aerodynamically-advanced helmet.
Ballista is light, cool, comfortable, and engineered with a fully-integrated Mips Air safety system that's designed to help keep you safer.
Product details
- Trek's fastest, most aerodynamic helmet saves big watts and shaves crucial seconds
- An excellent ventilation system makes this aero helmet surprisingly cool and comfortable
- The Mips Air system is light, cool, and designed to help reduce rotational forces
- The single-lace BOA® fit system is fully adjustable to provide a custom, 360° fit
- Rubberized sunglasses docking port provides secure and easy-to-use storage
- Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership
- 30-Day Unconditional Guarantee allows you to return your helmet if you're unsatisfied for any reason
- Complies with U.S. CPSC safety standards for bicycle helmets for persons age 5 and over
Specs
Size | S | M | L |
---|---|---|---|
Circumference | 51-57cm | 54-60cm | 58-63cm |
Fit system | BOA® | BOA® | BOA® |
Buckle type | Lightweight buckle | Lightweight buckle | Lightweight buckle |
Includes | Crash Replacement Guarantee, NoSweat pad and travel bag | Crash Replacement Guarantee, NoSweat pad and travel bag | Crash Replacement Guarantee, NoSweat pad and travel bag |
Weight | 250.0g | 275.0g | 295.0g |
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, materials, and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. Prices shown are manufacturer's suggested retail prices.
Weights are based off pre-production products at time of publication. Weights may vary in final production.
Sizing
Size | Circumference |
---|---|
S | 51 - 57 cm 20" - 22" |
M | 54 - 60 cm 21" - 24" |
L | 58 - 63 cm 23" - 25" |