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.
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Key Features
Glove-Friendly Easy Open
Comes standard with Fidlock® easy-open magnetic strap clasp
Ignite Powered
Ignite dual pane heated shield for fog-free & ice performance in sub-zero conditions
Sunshield Trigger
Sunshield is oversized for maximum field of view & flips up instantly with the push of a button
DOT/ECE Dual Certified
DOT/ECE dual certified helmet shell with weight starting at 1900 grams
Drag
Our innovative new 509 Delta R4 Ignite Helmet sets the new standard for modular flip-up face shield performance with Ignite dual pane heating technology for clear, ice- and fog-free vision in sub-zero conditions. The sunshield is oversized for maximum field of view and flips up instantly with the push of a glove-friendly button. Built for maximum warmth and convenience, the helmet’s long list of features includes climate control venting and the glove-friendly Fidlock® magnetic strap buckle.
Key Features
- Poly Alloy Shell
- Climate Control Ventilation system with two stage front chin vent, adjustable forehead vents, and exhaust vents.
- Ignite Ignite Technology features a built-in heating element within the helmet shield or goggle lens, designed to regulate temperature and prevent condensation, thereby eliminating foggy vision.dual pane heated shield for fog-free performance with new shield locks that create the perfect seal
- ITO (Indium Tin Oxide) shield coating to prevent surface scratches and fogging
- Moisture wicking removable Liner & Cheek pads for custom fit adjustments and easy to wash → Shop Cheekpads for Delta R4 Helmets
- 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
- Replaceable polycarbonate visor with Lifetime Warranty
- Arctic Chin Curtain and 509 breath box comes standard, and are removable for fine tuning
- Smoke tinted sunshield drops down with Sunshield Trigger
- Multiple shield options (technologies including polarized, mirror, and photochromatic available) → Shop Shields
- Universal camera mount capable
- App-driven customization, software, and feature updates for Apple and Android
- WARNING for California residents
Specs
- Helmet Certification: DOT & ECE 22.05
- Starting Weight: 1,900 grams
- Best Head Shape: Intermediate oval fit
- Size Range: XS - 2X
- Shell Breaks:
Small shell - XS, SM, MD, LG
Large Shell - XL, 2X - Included items: Instruction Manual , 12 V power to machine cords, 509 helmet drawstring bag, breathbox, 509 Sticker
Size Guide
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.
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