30 Day Unconditional Guarantee
For Trek, Bontrager and Electra products, if for some reason you're not 100% happy with your purchase, you can return it within 30 days for a refund - no questions asked!
Trek Ballista Mips – Performance for the Podium
The product of extensive research and development in the pursuit of racing faster, the Ballista is Trek’s fastest and most aerodynamically advanced helmet. With a suite of pro-level features like the Mips Air safety system and the customisable BOA fit system, the Ballista is the go-to helmet for the days when speed is the top priority.
Crash Replacement Guarantee
With our Crash Replacement Guarantee, we will provide you with a free replacement helmet if it is involved in a crash within the first year of ownership. Simply contact us or your local retailer with the crashed helmet, original sales receipt, details of the incident and a return address for your replacement.
Learn more30-Day Unconditional Guarantee
If for any reason you’re not satisfied with a Bontrager or Trek aftermarket purchase, return the item, along with the original sales receipt to the original place of purchase within 30 days for an exchange or refund. Think of it as a 30-day test ride.
Learn moreHelmet Fit and Sizing
For your helmet to do its job, it's important that it's sized properly and fits well. Reference our sizing guide at the link below to find your ideal size and see how Bontrager helmets are intended to fit.
Learn more| Size | S | M | L |
|---|---|---|---|
| Circumference | 51-57 cm | 54-60 cm | 58-63 cm |
| 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 | 265g | 275g | 295g |