Less wind. More win. When speed is your top priority and every watt counts, reach for the helmet t...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. The Ballista is light, cool, comfortable and engineered with a fully integrated Mips Air safety system that's designed to help keep you safer.
Key Features:
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 and cool and designed to improve comfort and protection
The single-lace BOA® fit system is fully adjustable to provide a custom, 360° fit
Rubberised sunglasses docking port provides secure and easy-to-use storage
Bevelled front edge improves field of view while riding on the hoods and in the drops
The Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership
The 30-Day Unconditional Guarantee allows you to return your helmet if you're unsatisfied for any reason
Our fastest helmet ever
Ballista is the fastest helmet in Trek's line-up. Its aerodynamic efficiency saves riders 10.1 watts of power and more than one bike length during a final sprint versus the Velocis in a standard one-hour test.
Unexpectedly light
The 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 optimise 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
For that Goldilocks fit, the Ballista features a single-lace, 360° BOA® fit system with two lace height positions and three yoke positions – offering complete customisation.
Secure storage
The Ballista’s rubberised side vents make it easy to stow away your sunglasses when you’re not wearing them.
A clear view
The Ballista features a bevelled 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.
Specification:
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
235g
255g
280g
The Trek Ballista Mips Helmet is designed for adult cyclists prioritizing speed and aerodynamic efficiency. Its key benefit is saving significant watts and seconds, particularly in competitive scenarios. A potential caveat is its specialized focus on aerodynamics, which might make it less of a priority for casual riders. This helmet is Trek's most aerodynamically advanced, featuring an integrated Mips Air safety system for enhanced protection, a comfortable and adjustable BOA® fit system, and thoughtful design elements like sunglass docking and an improved field of view.
All features
Age Group
adult
Colour
Black
Gender
Unisex
Model Part Number
5279739
Brand
Trek
Extended Product Information
FAQs
What makes the Ballista Mips helmet faster than other helmets?
The Ballista Mips is designed with an advanced aerodynamic profile, informed by computational fluid dynamics, which significantly reduces wind resistance. This optimization saves watts and can shave seconds off your ride time, especially at higher speeds.
How does the Mips Air system improve safety and comfort?
Mips Air is an integrated, lightweight system designed to manage rotational forces during an impact. It provides an additional layer of protection while also enhancing ventilation and comfort by being seamlessly integrated into the helmet's padding.
Is this helmet suitable for everyday cycling or just racing?
While engineered for maximum aerodynamic performance ideal for racing, its excellent ventilation, comfort, and safety features also make it a high-performance option for serious cyclists who prioritize speed and efficiency on any ride.
What is the Crash Replacement Guarantee?
The Crash Replacement Guarantee provides a free helmet replacement if your helmet is involved in a crash within the first year of ownership. You will need to present the damaged helmet and proof of purchase.
Can I return the helmet if I'm not satisfied?
Yes, Trek offers a 30-Day Unconditional Guarantee, allowing you to return the helmet for any reason if you are unsatisfied within 30 days of purchase.
How do I clean the helmet and its pads?
Clean the helmet shell with a damp cloth and mild soap. The internal pads can be removed and hand-washed with mild soap and water. Allow all parts to air dry completely before reassembling or storing.
What sizes are available for the Ballista Mips helmet?
The Ballista Mips helmet is available in three sizes: Small (51-57 cm), Medium (54-60 cm), and Large (58-63 cm).
Troubleshooting
BOA® dial is stiff or difficult to turn
Ensure the laces are not tangled. Try gently wiggling the dial while turning. Clean any debris from the dial mechanism if visible.
Helmet feels too tight or too loose
Readjust the BOA® dial for a more precise fit. Ensure the harness height is set correctly for your head shape.
Pads are uncomfortable or don't fit well
Ensure the pads are correctly oriented and fully seated. If the original pads are unsuitable, consider replacement pads designed for this helmet model.
Sunglass storage port is difficult to use
Ensure sunglasses are inserted with the arms aligned correctly into the rubberized slots. Practice inserting and removing them to find the optimal angle.
Pros and Cons
Pros
Exceptional aerodynamic performance for speed.
Lightweight construction for comfort during long rides.
Effective ventilation system keeps the head cool.
Integrated Mips Air offers advanced safety features.
Highly adjustable BOA® fit system ensures a secure fit.
Includes a Crash Replacement Guarantee and Unconditional Guarantee.
Cons
Primary focus on aerodynamics may not be optimal for all riding styles.
Higher price point reflecting advanced technology.
Ventilation, while good for an aero helmet, might be less than non-aero helmets.
Place the helmet on your head and ensure it sits level.
Turn the BOA® dial clockwise until a snug, comfortable fit is achieved. The system offers 360° tensioning for a customized feel.
Adjust the vertical position of the harness if needed for optimal fit.
Compatibility:
The helmet is designed for adult cyclists and is available in multiple sizes (S, M, L) to accommodate various head circumferences.
The BOA® fit system is compatible with most head shapes.
Features a rubberized port for sunglass storage, compatible with most standard cycling sunglasses.
Care:
Cleaning: Clean the helmet shell and pads with mild soap and water. Use a soft cloth and allow the helmet to air dry completely. Avoid harsh chemicals or solvents.
Pad Maintenance: The moisture-wicking pads can be removed and hand-washed. Ensure they are fully dry before reinserting.
Storage: Store the helmet in a cool, dry place away from direct sunlight or extreme temperatures. Use the included travel bag for protection during transport.
Inspection: Regularly inspect the helmet for any signs of damage, such as cracks or dents. If damage is found, the helmet should be replaced.