Trek Ballista Mips helmet

Performance for the podium

Meet Ballista, Trek's most aerodynamically advanced helmet — the product of extensive research, development, and design in the pursuit of riding and racing faster.

Our fastest helmet ever

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.

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A clear view

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.

Find your fit

Ensure you choose the correct helmet size by using our fit guide.

See the guide

Love your lid

Think of this as a 30-day test ride. If for any reason you're not satisfied with your Trek helmet, we’ll take it back.

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Peace of mind

If your helmet is involved in a crash within the first year of ownership, we’ll replace it for free.

Get back on the road

Hassle free returns

Returning your helmet is easy. We’ll provide you with a label and take the helmet back for free.

More info

Head to head

Which helmet is right for you?

Trek Ballista

Trek’s fastest helmet, made for shaving seconds off of your PRs

Shop Ballista

Trek Velocis

An ultra-light and ultra-cool helmet for your toughest rides

Shop Velocis