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Trek Ballista Mips Road Bike Helmet

Trek Ballista Mips Road Bike Helmet
  • Color: White/Nautical Navy
  • Color: Black
  • Color: White
  • Color: Purple Flip
Please select options


An aerodynamic road bike helmet that is undeniably fast, yet surprisingly light, cool, and comfortable.

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 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
- 5-STAR Virginia Tech safety rating
- Complies with U.S. CPSC safety standards for bicycle helmets for persons age 1 and over

Circumference 51-57cm 54-60cm 58-63cm
Fit system BOA® BOA® BOA®
Pad material Moisture wicking pads Moisture wicking pads Moisture wicking pads
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 250g 275g 295g

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.

Weights are based off pre-production products at time of publication. Weights may vary in final production.

Small 51 - 57 cm
20" - 22"
Medium 54 - 60 cm
21" - 24"
Large 58 - 63 cm
23" - 25"

Part Numbers

Option UPC MPN Store SKU
White/Nautical Navy / Small 768682582381 5279724 HEL51628527C
White/Nautical Navy / Medium 768682582725 5279725 HEL52620080C
White/Nautical Navy / Large 768682582749 5279726 HEL51704278C
Black / Small 768682601488 5279718 HEL36944247C
Black / Medium 768682601600 5279719 HEL37130676C
Black / Large 768682601341 5279720 HEL36796768C
White / Small 768682562369 5279721 HEL36251971C
White / Medium 768682240731 5279722 HEL37739615C
White / Large 768682562222 5279723 HEL36513617C
Purple Flip / Small 768682582565 5279727 HEL41305839C
Purple Flip / Medium 768682476147 5279728 HEL4241933C
Purple Flip / Large 768682582404 5279729 HEL41414994C