Half Shell Helmet

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
    The ultimate protection for your head.
  • lightweight
    Coming in at 375g, you won't notice it the weight, while keeping your head safe.
  • Ventilation
    14 vents for maximum airflow
Don’t let its casual looks fool you.
Don’t let its casual looks fool you.
Don’t let its casual looks fool you.
Half Shell Helmet

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
    The ultimate protection for your head.
  • lightweight
    Coming in at 375g, you won't notice it the weight, while keeping your head safe.
  • Ventilation
    14 vents for maximum airflow
Don’t let its casual looks fool you.
Don’t let its casual looks fool you.
Don’t let its casual looks fool you.

FEATURES & TECH

Mips®

Mips® B-Series Rotational Impact Brain Protection System

Weight: 375g

VENTILATION

14 vents for maximum airflow

SHELL

Extended Coverage MTB Trail Helmet

STRAPS

Side strap adjusters

CONSTRUCTION

Full wrap in-mold construction

VISOR

3-Way adjustable screwless visor

1 20

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 SIZE RANGE SHELL EPS HEADLINE CROWN COMPATIBILITY RETENTION SYSTEM SIZE VISOR SIZE
YOUTH 48-53 Y Y 6 Y OS Y
XS / S 53 - 56 S S 6 XS / S OS OS
M / L 57 - 59 M M 6 M / L OS OS
XL / XXL 60 - 63 L L 6 XL / XXL OS OS

Compare Flowline Helmet Lineup

Flowline SE

Flowline
WEIGHT 375g 375g
SHELL MATERIAL Extended Coverage MTB Trail Helmet Extended Coverage MTB Trail Helmet
SHELL SIZES 4 shell sizes (YOUTH, XS/S, M/L, XL/XXL) 4 shell sizes (YOUTH, XS/S, M/L, XL/XXL)
ROTATIONAL DEVICE Mips® B-Series Rotational Impact Brain Protection System Mips® B-Series Rotational Impact Brain Protection System
IMPACT LINER Dual Density EPS for low and high-speed impacts Full wrap in-mold construction
COMFORT LINER Anti-microbial Quick Dry Premium Liner
VISOR SCREWS 3-Way adjustable screwless visor 3-Way adjustable screwless visor
NUMBER OF VISORS 1 1
CERTIFICATIONS Exceeds bicycle certifications: CPSC 1203, CE EN 1078, AS NZ 2063:2008*, E-bike certified NTA 8776 (* varies by regional standards) Exceeds bicycle certifications: CPSC 1203, CE EN 1078, AS NZ 2063:2008*, E-bike certified NTA 8776 (* varies by regional standards)
VENTILATION 14 vents for maximum airflow 14 vents for maximum airflow