Helmets

Don't let its casual looks fool you. Flowline quietly intertwines Troy Lee Designs' dependable helmet protection and comfort features with an affordable price point. Beneath its clean, understated hood, Troy Lee Designs leans on years of helmet technology experience to crank up the performance, earning a Five-Star safety rating from Virginia Tech.

- MIPS B-Series Rotational Impact Brain Protection System for ultimate head protection
- Lightweight at 375g - you won't notice the weight while staying safe
- 14 vents for maximum airflow
- 3-Way adjustable screwless visor
- Full 360-degree fit retention system with 3-way rear height adjustment
- Extended coverage MTB trail helmet design
- Full wrap in-mold construction

MIPS equipped and eMTB-rated, Flowline SE sets the standard for safety within a modern, minimalist design, achieving a four-star safety rating from Virginia Tech. With 14 vents, an anti-microbial liner, and a Fidlock magnetic buckle system, Flowline SE is the workhorse of trail helmets.

- MIPS B-Series Rotational Impact Brain Protection System
- Four-star safety rating from Virginia Tech
- 14 vents for maximum airflow
- Anti-microbial Quick Dry Premium Liner
- Fidlock magnetic buckle system
- Lightweight at 375g
- 3-Way adjustable screwless visor
- Full 360-degree fit retention system with 3-way rear height adjustment
- Extended Coverage MTB Trail Helmet
- Full wrap in-mold construction
- Dual Density EPS for low and high-speed impacts
- eMTB-certified

So comfortable you won't ever want to take it off.

Head of the class, A3 leaves nothing to chance by setting the modern standard in protection and fit as demanded by Troy Lee Designs' athletes. Equipped with Mips® protection, the co-molded EPP/EPS design features sixteen vents to optimize airflow making for a helmet that is so comfortable it practically disappears on your head.

This helmet is designed and intended exclusively for use by bicycling activities, including mountain biking and off-road cycling.

Specifications
- Co-molded EPP and EPS for low and high-speed Patent Pending impact energy management.
- B-Series MIPS Rotational Brain Protection system creates an optimal 360-degree fit that can maximize the safety features built into the A3.
- Advanced layering 3-piece shell
- 3-Way Magnajust visor easily accommodates goggles, whether they are stowed on the upswing or on your face.
- TLD Sweat Glide System – EVA wicking foam behind the comfort liner along the front brow directs sweat away from the eyes and optics. Includes 2 spares.
- 2-piece Ionic comfort liner for anti-microbial & sweat-wicking properties that is also quick to dry
- 16 vents optimally tuned with the channeling of the helmet to create the most intake and exhaust of any half-shell helmet we've produced
- Premium 3D Fidlock magnetic buckle system and composite smart shear screws are made to shear away during severe impact/direct hit to visor.
- Includes helmet carrying bag, (2) spare sweat glide strips, and a spare Ionic comfort liner and sticker kit
- Certification - CPSC 1203, CE EN 1078, AS NZ 2063:2008.

Head of the class, A3 leaves nothing to chance by setting the modern standard in protection and fit as demanded by TLD athletes. Equipped with MIPS protection, the co-molded EPP/EPS design features sixteen vents to optimize airflow making for a helmet that is so comfortable it practically disappears on your head.

- MIPS B-Series rotational impact brain protection
- Co-molded EPP and EPS construction
- Advanced layering 3-piece shell design
- 16 vents optimally tuned for airflow
- 3-Way Magnajust visor system
- 2-piece Ionic comfort liner with EVA wicking foam
- Premium 3D Fidlock magnetic buckle system
- Ultra-lightweight at 415g

Where enduro racing is anything but predictable, Stage is the lightest, most versatile full-face helmet in its class, allowing you to focus on nothing but the terrain ahead. Utilizing three shell sizes constructed of Polylite with fiber reinforcement, Stage combines EPP and EPS for both slow-speed and high-speed protection. The Polylite chinbar features massive openings for ventilation, key for all-day breathability so you can keep charging at the front of the pack.

- MIPS C2 Rotational Impact Brain Protection System for ultimate head protection
- Lightweight at only 690g - you won't even notice you're wearing a helmet
- 11 high flow intakes and 14 open core exhaust vents with deep max airflow internal channeling for maximum ventilation
- Three shell sizes with Polylite fiber reinforcement construction
- Dual Density EPS co-molded with EPP for slow-speed and high-speed protection
- EPP lined chinbar with massive openings for ventilation
- Smart sheer breakaway visor screws
- Exceeds bicycle certifications: CPSC 1203, CE EN1078, ASTM F1952, ASTM F2032, and AS/NZS 2063

Where enduro racing is anything but predictable, Stage is the lightest, most versatile full-face helmet in its class, allowing you to focus on nothing but the terrain ahead. Utilizing three shell sizes constructed of Polylite with fiber reinforcement, Stage combines EPP and EPS for both slow-speed and high-speed protection. The Polylite chinbar features massive openings for ventilation, key for all-day breathability so you can keep charging at the front of the pack.

- MIPS C2 Rotational Impact Brain Protection System for ultimate head protection
- Lightweight at only 690g so you won't even notice you're wearing a helmet
- 11 high flow intakes and 14 open core exhaust vents with deep max airflow internal channeling for maximum ventilation

The reigning king of full-face helmets, the D4 range expands with a Polyacrylite model packing the same safety and comfort features as the premium carbon and composite models into a price-conscious shell. Details make the D4 the most coveted full-face in mountain biking, including MIPS C2 brain protection, an air intake system for ventilation, and an unmatched anatomical fit.

D4 reigns king atop downhill podiums and BMX events across the globe. Available in carbon, composite and polyacrylite. Details are what makes the D4 the most coveted full-face in mountain biking. Prioritizing safety while balancing weight through premium construction and materials, D4 incorporates MIPS protection with an EPP chin bar and anatomical cheek pads with emergency release.

- MIPS C2 Rotational Impact Brain Protection System for ultimate head protection
- Lightweight design from 1000g to 1150g - you won't notice you're wearing it
- Maximum ventilation with 20 high-flow intake and exhaust ports to stay cool and composed
- Advanced Polyacrylite shell construction
- Front air intake system with high flow through polymer center and power grid side mesh
- Collarbone Suspension System
- Breakaway visor screws
- Anti-microbial padding
- Quick release contoured 3D cheek pads for anatomically optimized fit

Helmet visors work hard to get the sun out of your eyes and keep you looking good.

Features
- Works perfectly with your Trek Tyro Child helmets
- Original equipment replacement visor

Let's face it - we all sweat. Sweat stinks. Fresh pads will make your helmet smell, and fit, just like it did when it was new.

Features
- Original equipment replacement fit pads for your Trek Tyro Child helmets
- Helmet fit pads should be replaced once a year to maintain fit and hygiene

Helmet visors work hard to get the sun out of your eyes and keep you looking good.

Features
- Works perfectly with your Trek Tyro Youth helmets
- Original equipment replacement visor

Let's face it - we all sweat. Sweat stinks. Fresh pads will make your helmet smell, and fit, just like it did when it was new.

Features
- Original equipment replacement fit pads for your Trek Tyro Youth helmets
- Helmet fit pads should be replaced once a year to maintain fit and hygiene

Fit systems work hard to keep your helmet secure and to maximize safety.
No matter what happens, these original replacements will get them working like new.

Features
- Original replacement fit systems for your Trek helmet
- Compatible with Trek Child and Youth helmets with Headmaster fit systems

Let's face it - we all sweat. Sweat stinks. Fresh pads will make your helmet smell, and fit, just like it did when it was new.

Features
- Original equipment replacement fit pads for your Trek Little Dipper helmets
- Helmet fit pads should be replaced once a year to maintain fit and hygiene

Let's face it - we all sweat. Sweat stinks. Fresh pads will make your helmet smell, and fit, just like it did when it was new.

Features
- Replacement fit pads for your Trek Children's and Youth Solstice helmets
- Helmet fit pads should be replaced once a year to maintain fit and hygiene

Let's face it - we all sweat. Sweat stinks. Fresh pads will make your helmet smell, and fit, just like it did when it was new.

Features
- Original equipment replacement fit pads for your Trek Quantum WaveCel helmet
- Helmet fit pads should be replaced once a year to maintain fit and hygiene

Helmet visors work hard to get the sun out of your eyes and keep you looking good.

Features
- Works perfectly with your Trek Solstice helmets
- Original equipment replacement visor

Helmet visors work hard to get the sun out of your eyes and keep you looking good.

Features
- Works perfectly with your Trek Solstice Children's helmets
- Original equipment replacement visor

Fit systems work hard to keep your helmet secure and to maximize safety.

Features
- Size-specific for the best fit possible
- 550mm length fits Rally SM, Rally MD, and Blaze SM
- 575mm length fits Rally LG, and Blaze MD
- 600mm length fits Rally XL, and Blaze LG

Helmet visors work hard to get the sun out of your eyes and keep you looking good.

Features
- Works perfectly with your Trek Quantum WaveCel helmet
- Original equipment replacement visor

Helmet visors work hard to get the sun out of your eyes and keep you looking good.

Features
- Works perfectly with your Trek Rally WaveCel helmet
- Original equipment replacement visor

Helmet visors work hard to get the sun out of your eyes and keep you looking good.

Features
- Works perfectly with your Trek Blaze WaveCel helmet
- Original equipment replacement visor

Let's face it - we all sweat. Sweat stinks. Fresh pads will make your helmet smell, and fit, just like it did when it was new.

Features
- Original equipment replacement fit pads for your Trek Rally WaveCel helmet
- Helmet fit pads should be replaced once a year to maintain fit and hygiene

Fit systems work hard to keep your helmet secure and to maximize safety.
No matter what happens, these original replacements will get them working like new.

Features
- Original replacement fit systems for your Trek helmet
- Compatible with all Trek and Bontrager helmets with Headmaster fit systems

Attach an Ion headlight to illuminate the trail, or attach an action camera with help from this Blendr helmet mount.
Compatible with all Ion headlights and many action cameras.

Features
- Quickly mount a headlight or action camera
- Compatible with all Blaze WaveCel Mountain Bike helmets
- Compatible with most Trek Rally WaveCel Mountain Bike helmets
- Tested with accelerometer for intended breakaway point if involved in a crash
- For exact Rally helmet compatibility, visit the product page for your helmet model and review the related parts under the "Service" tab

Fit systems work hard to keep your helmet secure and to maximize safety.
No matter what happens, these original replacements will get them working like new.

Features
- Original replacement BOA® Fit System for your Trek Ballista Mips helmet
- Only compatible with Trek Ballista Mips with the BOA® Fit System
- Size specific for the best possible fit

Fit systems work hard to keep your helmet secure and to maximize safety.
No matter what happens, these original replacements will get them working like new.

Features
- Original replacement BOA® Fit System for your Trek Velocis Mips helmet
- Only compatible with Trek Velocis Mips with the BOA® Fit System
- Size specific for the best possible fit

Let's face it - we all sweat. Sweat stinks. Fresh pads will make your helmet smell, and fit, just like it did when it was new.

Features
- Original equipment replacement fit pads for your Trek Balista Mips helmets
- Helmet fit pads should be replaced once a year to maintain fit and hygiene

No matter what happens, these original replacements will get them working like new.

Features
- Compatible with Trek Blaze WaveCel helmet
- Integrates seamlessly into the helmet
- Size-specific fit with helmet

Let's face it - we all sweat. Sweat stinks. Fresh pads will make your helmet smell, and fit, just like it did when it was new.

Features
- Original equipment replacement fit pads for your Trek Velocis Mips helmets
- Helmet fit pads should be replaced once a year to maintain fit and hygiene

A helmet with big kid features for smaller riders. YOUR LITTLE ONE NEEDS A HELMET, TOO Designed to help protect the young cyclist in your life, the Little Dipper toddler helmet features a built-in visor and easy-to-use magnetic buckles with a kid-friendly fit. It's perfect for little ones riding in a trailer, a child carrier, or all on their own. PRODUCT DETAILS - In-molded EPS shell with full coverage designed for protection and durability - Fidlock magnetic buckle fastens effortlessly for a quick, kid-friendly fit - Soft helmet pads are easy to remove and clean - Dialed fit system provides a secure and comfortable fit - Adjustable helmet straps provide a clean look with easy fit management - Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership - Helmet meets ASTM standards — tested with a smaller-mass headform that's more realistic to younger riders - Complies with U.S. CPSC safety standards for bicycle helmets for persons age 1 and over