SAFETY MEETS STYLE.
The SE5 debuted as one of the most advanced helmets on the market, emphasizing safety and protection for our fastest racers. Available in carbon and composite shells, SE5 integrates EPS and EPP protection with the Mips® Integra system, reducing rotational forces.
An engineered airflow system beginning at the mouthpiece ensures the SE5 is as comfortable atop your head as it is on the podium.
- Mips® Integra Rotational Impact Brain Protection System
The ultimate protection for your head.
- LIGHTWEIGHT
From 1300g to 1470g, you won't notice you're wearing it.
- MAXIMUM VENTILATION
Ultimate airflow and ventilation to keep you cool



SAFETY MEETS STYLE.
The SE5 debuted as one of the most advanced helmets on the market, emphasizing safety and protection for our fastest racers. Available in carbon and composite shells, SE5 integrates EPS and EPP protection with the Mips® Integra system, reducing rotational forces.
An engineered airflow system beginning at the mouthpiece ensures the SE5 is as comfortable atop your head as it is on the podium.
- Mips® Integra Rotational Impact Brain Protection System
The ultimate protection for your head.
- LIGHTWEIGHT
From 1300g to 1470g, you won't notice you're wearing it.
- MAXIMUM VENTILATION
Ultimate airflow and ventilation to keep you cool
FEATURES & TECH
Mips®
In-molded Mips® Integra Rotational Impact Brain Protection System.
Weight:
CARBON 1350g | COMPOSITE 1470
COMFORT LINER
Quick release XT2 3D cheek pads and Ionic® XT2 washable liner create an optimized fit with advanced anti-microbial properties.
VENTILATION
Chinbar mounted gill-set force air intake system
EPP COLLARBONE IMPACT SYSTEM
EPP Chin bar featuring Collarbone Suspension System
EPS HEAD FORM
Dual density to protect against low and high speed impacts
INCREMENTAL SIZING
3 helmet shell sizes and padding options for full incremental sizing for greater range of fitment
Size Chart
Measuring your head with a fabric tape measure around the circumference of your head holding the tape just above your eyebrows and ears. 1” = 25mm
| Size | XS | SM | MD | LG | XL | XXL |
|---|---|---|---|---|---|---|
| HAT SIZE | 6 5/8 - 6 3/4 | 6 7/8 - 7 | 7 1/8 - 7 1/4 | 7 1/4 - 7 3/8 | 7 1/2 - 7 5/8 | 7 3/4 - 7 7/8 |
| CM | 53 - 54 | 55 - 56 | 57 - 58 | 58 - 59 | 60 - 61 | 62 - 63 |
| IN | 20 7/8 - 21 1/4 | 21 5/8 - 22 | 22 3/8 - 22 3/4 | 22 3/4 - 23 1/4 | 23 5/8 - 23 1/4 | 24 3/8 - 24 3/4 |
Compare D4 Helmet Lineup
Most Popular
SE5 Carbon |
SE5 Composite |
|
|---|---|---|
| WEIGHT | 1350g | 11470g |
| SHELL MATERIAL | Carbon Shell | Composite Shell |
| SHELL SIZES | 3 helmet shell sizes and padding options for full incremental sizing for greater range of fitment | 3 helmet shell sizes and padding options for full incremental sizing for greater range of fitment |
| ROTATIONAL DEVICE | Mips® Integra Rotational brain protection system-protects against rotational impacts. | Mips® Integra Rotational brain protection system-protects against rotational impacts. |
| IMPACT LINER | EPP-Lined Chin bar featuring Collarbone Suspension System | EPP-Lined Chin bar featuring Collarbone Suspension System |
| COMFORT LINER | Quick release XT2 3D cheek pads and Ionic® XT2 washable liner create an optimized fit with advanced anti-microbial properties. | Quick release XT2 3D cheek pads and Ionic® XT2 washable liner create an optimized fit with advanced anti-microbial properties. |
| VISOR SCREWS | Smart sheer plastic visor screws and brass inserts for easy impact break-away | Smart sheer plastic visor screws and brass inserts for easy impact break-away |
| NUMBER OF VISORS | 1 | 1 |
| VENTILATION | Chinbar mounted gill-set forced air intake system | Chinbar mounted gill-set forced air intake system |