Louis Garneau P-09 Helmet

Item # YH-LGP9
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Louis Garneau P-09 Helmet
A true revolution in aerodynamic helmets, the Louis Garneau P-09 is designed to be faster than the competition. The P-09 helmet utilizes the innovative technology of the Vorttice helmet with improved aerodynamics, improved ventilation, and an improved lens system. The helmet's frontal surface is reduced to a minimum, making the helmet more compact and able to cut through wind's resistance. The inferior part of the tail is reversed for a better airflow at the shoulders, and a Speed Port allows air that enters at the front of the helmet to exit through vents behind the ears and release any pressure. A better vent position combined with additional and deeper evacuation channels allow a better airflow for an improved ventilation. The improved lens system includes a visor that lifts up for a fast and easy transition, and that can be easily removed using just one hand.
  • In-Mold construction fuses the EPS liner with the polycarbonate shell to create a helmet that's light and strong
  • Moisture evacuation channels provide better airflow and moisture wicking
  • Golf ball effect from the texturized surface on the front of the helmet helps achieve better laminar airflow
  • Spiderlock Pro TT retention system features a polymer neck support. It can be easily tightened on the head using only one hand thanks to its dented anti-slip wheel and its inclination can be adjusted to several positions
  • Pro-lock divider is a small and light cam locking device to quickly adjust strap position
  • Icefil padding keeps you cool
  • P-09 lens included
  • Weight: 350 grams
Louis Garneau P-09 Helmet
  • WEIGHT 12.4 oz/350g
  • VENTS 4
  • RETENTION SYSTEM Spiderlock Pro TT
  • SIZING S(20.5"-22"), M(22"-23.25"), L(23.25"-24.5")
  • Rating 4


by PowerReviews
Louis Garneau P-09 Helmet

(based on 1 review)

Reviewed by 1 customer

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Great Helmet, But Go One Size Up

By PRevlin

from Tustin, CA

About Me Competitive Cyclist

Verified Buyer


  • Aerodynamic
  • Comfortable Fit
  • Lightweight


  • No Ventilation

Best Uses

  • Sprint Triathlon
  • Time Trial

Comments about Louis Garneau P-09 Helmet:

During the un-boxing, I was immediately pleased with how light the P-09 felt. Also, I love the attachable (and detachable) visor. The helmet is reasonably comfortable, but runs smaller than your typical road helmet. I'm consistently a medium, but on the advise of a friend, I bought the P-09 in a large and it fits perfectly. Felt great out on the road. Hard to objectively judge its aero benefits, but if felt aero.

1. Not a ton of ventilation. I can see myself melting if I had to wear the P-09 on a warm-hot day for anything longer than a 40k TT.

2. Reviews/reports online don't have the P-09 as a standout in the wind-tunnels. So, you can probably find better performing aero helmets out there if you're willing to pay the price.

  • Sizing:
  • Feels full size too small
  • Was this a gift?:
  • No

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Louis Garneau P-09 Helmet

Louis Garneau P-09 Helmet

Item No. »  YH-LGP9

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