An aerodynamic road bike helmet that is undeniably fast, yet surprisingly light, cool, and comfortable.
Overview
Less wind. More win.
When speed is your top priority and every watt counts, reach for the helmet thatll cut through the wind to save you seconds. Ballista is Treks fastest, most aerodynamically-advanced helmet.

Ballista is light, cool, comfortable, and engineered with a fully-integrated Mips Air safety system thats designed to help keep you safer.

Product details
Treks fastest, most aerodynamic helmet will save big watts and shave 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
Beveled front edge improves field of view while riding on the hoods and in the drops
Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership