Meet Ballista, Trek's most aerodynamically advanced helmet — the product of extensive research, development, and design in the pursuit of riding and racing faster.
Ballista is the fastest helmet in Trek's lineup. Its aerodynamic efficiency saves riders 10.1 watts of power and more than one bike length during a final sprint versus Velocis in a standard 1-hour test at 45 km/h.
Unexpectedly light
Ballista is light. At 275 grams, its minimalistic, low-profile design makes for a faster helmet that's lighter than ever before.
Cool is fast
Insight from computational fluid dynamic analysis helped optimize vent and channel design for more efficient airflow, creating a cool helmet.
Mips Air safety system
Less weight, seamless integration, improved sweat management, and rotational force management technology from Mips provide better performance and a better experience on the bike.
A better fit system
For that Goldilocks fit, Ballista features a single-lace, 360° BOA® fit system with two lace height positions and three yoke positions — offering complete customization.
Secure storage
Ballista’s rubberized side vents make it easy to stow away your sunglasses when you’re not wearing them.
Ballista features a beveled edge above the brow that opens up your field of view and lets you easily see the road ahead — even when tucked in the drops.
5-STAR protection
Ballista has received a 5-STAR safety rating from Virginia Tech's third-party testing facility, an unbiased, industry-accepted assessment of the level of protection a helmet provides to a cyclist.
