SKU: F01011200-130-802

Altitude 2.0 Offroad Pro Helmet

Name: Altitude 2.0 Offroad Pro Helmet
Brand: 509
SKU: F01011200-130-802
Price: 140.95 USD
Availability: OutOfStock

23 Reviews

$299.95 USD

ColorSci-Fi White - Gloss Finish

Gray Sci-Fi White Passion

SizeMD

Size Guide

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Free US Shipping

We offer Free Shipping on all orders over $99 within the US. During select promotions & holidays we will offer Free Shipping on all orders within the US.

Easy Returns

We have a very easy 30-day Return Policy! Please submit a Customer Support Ticket to get a Return Authorization so we can process your return or exchange.

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 with Lifetime Warranty
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.

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.