SKU: F01011200-130-802

Altitude 2.0 Offroad Pro Helmet

Name: Altitude 2.0 Offroad Pro Helmet
Brand: 509
SKU: F01011200-130-802
Price: 299.95 USD
Availability: OutOfStock

$299.95 USD

Color

Sci-Fi White

Size

Size Guide

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Easy Returns

We have a very easy 30-day Return Policy! Please visit the Support tab to find our self service returns portal.

3 Year Warranty

We stand behind our products – the 509 industry leading warranty covers every product we make in a variety of ways.

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Elevate your game with the next-generation performance of the 509 Altitude 2.0 Offroad Pro Helmet featuring the latest in weight-saving design and breathable comfort. Trail or track, the Altitude’s bestselling package twists the throttle wide open on airflow with a 40% larger chinbar intake and rear exhaust vents to keep you cool no matter what. Top of the line in every way, it includes the Fidlock® magnetic strap buckle for easy one-handed operation, plus MIPS protection for an added layer of security and peace of mind.

Key Features

Hand lay-up fiberglass composite construction
Pro MIPS® Brain Protection System for ultimate safety → Learn More
Fidlock® The Fidlock System is a cutting-edge magnetic chinstrap buckle used in motorsport helmets ensuring quick, secure, closures with one hand and is DOT and ECE compliant.
chinstrap strap closure for easy in and out
Upper vents for optimal airflow - Hi-Flow
Nine intake vents and four exhaust vents for optimal airflow
Moisture wicking removable Liner & Cheek pads for custom fit adjustments and easy to wash → Shop Cheek Pads for Altitude 2.0 Helmets
Replaceable polycarbonate visor
Universal camera mount capable
WARNING for California Residents

Specs

Helmet Certification: DOT
Starting Weight: 1150 grams
Best Head Shape: Intermediate oval fit
Size Range: XS to 2X
Shell Breaks:
Small Shell - XS to SM
Medium Shell - MD, LG, XL
Large Shell - 2X, 3X, 4X
Included Items: 509 Drawstring Helmet Bag, Chinbar Vent Plugs, Chin Curtain, 509 Sticker

Altitude Offroad Helmet Comparison

More 509 University

What is MIPS? 509 Pro Helmets

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You're going to LOVE the fit. Try it on and experience our perfect fit. If you don't love it, send it back in new and unused condition within 30 days for an exchange or full refund*. Risk free.

Not sure about your size? Try on at your local dealer!

*Street Helmets are a tighter fit due to cheekpad compression, however, they do pack out over time/use.

How to Measure

When measuring your head, use a cloth tape. Start it just above your eyebrows and circle it around the thickest point in the rear of your head and then reference the size guide below.

Scroll to the right to see more sizes

Size	US Hat Size	Inches	Centimeters
X-Small	6 5/8 - 6 3/4	20 7/8 - 21 1/8	53 - 54
Small	6 7/8 - 7	21 5/8 - 21 7/8	55 - 56
Medium	7 1/8 - 7 1/4	22 1/2 - 22 5/8	57 - 58
Large	7 3/8 - 7 1/2	23 1/4 - 23 1/2	59 - 60
X-Large	7 5/8 - 7 3/4	24 - 24 1/4	61 - 62
2X-Large	8	24 3/4 - 25	63 - 64
3X-Large	8 3/4	25 1/4 - 25 3/4	64 - 65
4X-Large	9	26 - 26 1/4	66 - 67
Youth Small	6	18 1/8 - 18 7/8	47 - 48
Youth Medium	6 1/8 - 6 1/4	19 1/4 - 19 5/8	49 - 50
Youth Large	6 3/8 - 6 1/2	20 - 20 1/2	51 - 52

Pressure Points

When trying on a helmet, take note of any pressure points on your forehead—a sign that the helmet is too round. Pressure points on the sides of your head indicate a helmet is too oval for the shape of your head. After you buy a new helmet, try wearing it for 30 to 45 minutes to check for pressure points before using it on a ride.

Pressure Points

When trying on a helmet, take note of any pressure points on your forehead—a sign that the helmet is too round. Pressure points on the sides of your head indicate a helmet is too oval for the shape of your head. After you buy a new helmet, try wearing it for 30 to 45 minutes to check for pressure points before using it on a ride.

Get the Look

To address the risk of head injuries, technological advancements in helmet design have introduced Mips®, a groundbreaking system that enhances protection during certain impacts. Mips®, an abbreviation for Multi-Directional Impact Protection System, is built into helmets to help reduce rotational motion to the head that could occur in oblique impacts.

The Mips® system is specifically designed to provide added safety for helmets by reducing harmful forces that may be transferred to the head during certain impacts. It targets rotational motion, which is a common cause of concussions and more severe brain injuries resulting from oblique hits to the head. The Mips® system consists of a low friction layer mounted inside the helmet. In the event of a crash, this layer is designed to move slightly, redirecting forces away from the head to help reduce the risk of brain injury.

A critical feature of the Mips® system is its ability to provide omnidirectional coverage of the entire surface between the head and helmet. It allows for a relative movement of 10-15mm, effectively redirecting energy away from the head during oblique impacts. Furthermore, Mips®-equipped helmets are certified to meet European and US helmet safety standards, ensuring they comply with the highest safety regulations for the region in which they are sold.

Overall rating: 4.9166665 / 5 from 24 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["fit","strap","price","helmet","air flow","pads","light"].

Review highlights

Reviews

The best helmet money can buy!

"This is the most comfortable helmet I’ve owned. And the “coolest” I love having the air vents on the top I can open or close any time, for any condition, and the magnetic chin strap is a game changer. Not having to do up the buckle every time you take your helmet off makes things so much faster. If you’re on the fence, just go for it!"

— Tristin R. (5/5)

Exceeded My Expectations

"This helmet is by far my favorite helmet I've ever owned! So many great things about it. 1) The fit is excellent. It's difficult for me to find a good fitting off road (or even ADV) helmet because I'm a long oval. I always get pressure points. Not with this helmet! Even though it's described as an intermediate oval, I find that it fits my head really well. Also, I found the size chart to be accurate. 2) The padding is so nice, as if my head is surrounded by pillows. It's very comfortable. 3) And it's super light. Riding all day and on multi-day rides is a nonissue. 4) My Air Brake goggles fit well, even in my XS size. 5) It vents really well, even in hot weather. I've used in temp up to about 90 degrees. You get a set of vent blocks offs, but I haven't had a chance to use them yet. 6) I get very little, if any, wind buffeting with the peak at high speeds. And I didn't find the wind noise to be any louder than other off road or ADV helmets I have. 7) And last, the fact that this helmet includes MIPS technology is icing on the cake. All in all, I couldn't be happier and highly recommend this helmet."

— Ann Z. (5/5)

The helmet for off road adventures

"Lightweight, super ventilated and conformable. Highly recommend for enduro riding"

— Miranda (5/5)

Altitude 2. 0 Off-road Pro Helmet

"Very happy with the fit of the helmet, comfy cheek pads and a breathable chin bar!"

— Branden P. (5/5)

ALTITUDE 2. 0 OFFROAD PRO HELMET

"A very good helmet, well ventilated and fits well."

— Den P. (5/5)

ALTITUDE 2. 0 OFFROAD PRO HELMET

"A good helmet for your money. Dressed to fit. It is especially nice to buy on sale"

— Denis (5/5)

Excellent Dirt Bike Helmet

"I picked this up for several reasons. The protection certifications, the Fid-Lock chin strap, the weight, the price, and the cutouts for speakers in the ear area. This helmet is comfortable, but not the most comfortable out there. I ride in Arizona and its HOT here. So helmet or no helmet you're heads going to get hot... that being said, this helmet does ventilate very well, however, anytime I stop I pull the helmet off to cool down and that's where the magnetic chin strap really shines. It makes it super easy and quick to pop the helmet on and off. I am very pleased with this purchase."

— Daniel R. (4/5)

"Great fit and lightweight definitely buying this again"

— Pavel (5/5)

Altitude 2.0

"Great Helmet very light and very comfortable and you can’t beat the Fidlock strap system it’s awesome so easy to use yet very secure."

— Jeffrey B. (5/5)

Awesome Lid!

"Awesome Lid!"

— Brian A. (5/5)

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