AT4.0 STREET

Inkwell

$375.00
323 reviews
Rated 4.4 out of 5 stars
5 stars (236)
4 stars (37)
3 stars (23)
2 stars (10)
1 star (17)
CONNECT WITH
Audio + Call Ready
COMPATIBLE WITH
Shockwave Audio
CERTIFICATIONS
DOT ECE 22.06
 
Specs & Description
ShellFibreglass
WeightSM – 1550g ± 50g
ComfortComfort liner, soft fit
Added Safety TechnologyN/A
Audio / Comms Tech Shockwave Bluetooth Audio ready
*Sold separately
ChinstrapDD-Ring
CertificationsECE 22.06 | DOT
Field of View (FOV)215°
PinlockPinlock ready
What’s in the BoxClear visor included

Tattoo details, on a crisp matte core shell. Inkwell layers hand drawn illustrations in a patchwork layout, finished with crisp white and dark copper accents. A walking sketchbook. Clean from a distance, packed with detail up close.

Made for the streets. Built to perform effortlessly the second you roll out, AT4.0 STREET feels light, balanced and planted through traffic and open stretches. Keep fatigue off your shoulders from first light to last call.

No compromise on safety or comfort. AT4.0 STREET takes all the key DNA from our signature CARBON line, delivered in a lightweight fibreglass shell that gives the perfect balance of toughness, safety and comfort. Explore AT4.0 STREET.

The value is in the platform. Clean design now, options later. Add Shockwaveâ„¢ Bluetooth audio (sold separately) for music, navigation, calls and rider-to-pillion comms. Switch up the look with visors.

What's in the Box - AT4.0 STREET
What's in the box overview image What's in the box
(Helmet style not shown)
Clear Visor Clear Visor
Maverick Mask Soft helmet bag
  • AT4.0 Street Helmet
  • Clear Visor
  • Soft helmet bag
3 year warranty

Ruroc warrants motorcycle helmets to be free of defects in material or workmanship for a period of 3 years from the date of purchase. The warranty is for the original purchaser only (non-transferable). If a product fails due to a manufacturing defect within the warranty period, Ruroc will repair or replace it free of charge, subject to the warranty terms and valid proof of purchase.

What's not covered?

What isn’t covered includes normal wear and tear, damage from accidents/falls/impact, cosmetic ageing/fading due to the elements, and any indirect, incidental, or consequential loss of any kind. For a complete list of what’s not covered, please check our full warranty details.

Crash Replacement (optional add-on)

Crash Replacement is an additional purchase (it's automatically added to your cart when you add a helmet) that covers accidental damage (drops/crashes). If your helmet is damaged in a crash or accident, it lets you replace it with 50% off a new Ruroc motorcycle helmet, as long as it’s redeemed within the helmet’s warranty period and in line with the scheme terms. Full Crash Replacement details can be found in our Terms & Conditions.

View full warranty details here.

Delivery & Returns
  • Delivered in custom protective packaging from our US depot*
  • FREE SHIPPING over $100 via tracked courier
  • FREE RETURNS
  • FREE EXCHANGES
  • Mainland US: up to 5 days from dispatch
  • Alaska & Hawaii: up to 7 days from dispatch
*Orders to Puerto Rico ship internationally from our UK depot. Some spare parts may also ship from the UK.
Helmet with DOT and ECE certification
DOT Certified
ECE 22.06 Certified

Seal of Approval.

AT4.0 STREET is ECE 22.06 certified with DOT approval, delivering trusted protection for everyday road riding.

Helmet interior padding

Comfort, Not Compromise.

Super-soft, multi-density pads and headliner keep you in your comfort zone.

Shockwave Bluetooth audio system
Bluetooth

Protection Meets Connection

AT4.0 STREET is compatible with the Shockwave Bluetooth audio system. Featuring seamless helmet integration, the Harman Kardon designed and tuned unit delivers rich & crisp audio.

215 degree field of view

Maximum Vision

Featuring 215° horizontal and 100° vertical field of vision, the AT4.0 edge-to edge visor maximises peripheral vision. Anti-scratch dipped, Pinlock 70 compatible, and made from Optical Grade Ballistic Polycarbonate, this is vision reinforced.

Helmet ventilation system

Full Climate Control.

Take full control of your helmet environment with open/close vents & tune your thermal comfort in both warm and cool climates.

DD-Ring chin strap

DD-Ring Chin Strap.

Create the perfect fit with a fully adjustable DD chinstrap.

FAQs

How do you measure for the AT4.0 STREET motorcycle helmet?

Take a fabric measuring tape, wrap it around your head just above your eyebrows and ears. Pull the tape until comfortably tight. Take the measurement. Our motorcycle helmet fit is intermediate oval.

How snug should a new AT4.0 STREET helmet be?

A helmet should feel snug, with even pressure around your crown and a firm cheek bite. Cheek pads bed in over time, so it shouldn't feel loose (or "perfect") straight away. There should be no helmet movement when turning from side to side. A snug fit is essential for safety.

How do I stretch the inside of my helmet helmet?

Wear it. That's it. The liner compresses naturally over time and will allow more give. If pain persists after 15 hours of riding time, you need the next shell size.

How long do AT4.0 STREET motorcycle helmets last?

Five years from the date of manufacture. All EPS foam degrades over time even if it looks fine. You should always replace a helmet after any impact.

How do I clean the AT4.0 STREET motorcycle helmet liner?

Remove cheek pads. Hand wash cold. Use mild soap only. Air dry for 24 hours. Never machine wash.

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Find your size
We recommend:
How to measure
  1. With a fabric measuring tape, wrap it around your head just above your eyebrows and ears.
  2. Pull the tape comfortably tight. Take the measurement.

Our motorcycle and snow helmet fit is an intermediate oval.

Returns policy

If the fit is not quite right our return process is simple. 14 days to exchange, picked up from home. See our returns page for more details.

Reviews for AT4.0 Street Range

All reviews are from verified customers

4.4 /5
323 Reviews
Will HouselJune 21 2026
Love this helmet far more than i thought i would
Mitchell HayesJune 19 2026
Most beautiful thing I’ve purchase in my life
Romero ScottJune 17 2026
Perfect great best I felt
Mark CooperJune 13 2026
The look and the strong feel
Erik CJune 10 2026
Helmet is amazing fits great no wind noise looks cool
malcMay 27 2026
Great colour and good quality.
P WilsonMay 25 2026
Beautiful, safe, expensive but justified. Great service
Sultan AlfarsiMay 25 2026
The helmet is very beautiful, comfortable, and matches the colors of the bike perfectly.
Derek PenmanMay 25 2026
Only gripe I have is the Drings are a wee bit fiddly and seem to be on a short strap
Dany_znaMay 22 2026
Bellissimo
EnriqueMay 22 2026
El casco debería de dejar algo mas de espacio con la nariz, casi roza con mi nariz. Por lo demás está muy bien
PAUL SHANNONMay 22 2026
Love the style of the lid, however less than impressed with the fitting of the lining and under the chin support. Keeps unseating and won't stay fixed, pain, so just taken off.
juan sanchezMay 20 2026
Nice good helmet , only issue is the clips at the bottom for the chin and sides keep coming off whenever I put on the helmet to break into it , haven’t wore it Ina ride , yet the tabs keep falling off .
LoghanMay 19 2026
I’m very happy with this helmet. It looks great, is comfortable, and feels quite light. However, it would be even better with an integrated sun visor, and the delivery was delayed by a few weeks. Overall, still a very good product that I would recommend.
MarkMay 15 2026
I ordered a small . It is very difficult to take off , also pretty hard to get on. The actual fit once its on is ok. It is pretty noisy. It fogs up pretty easy. It hasn't been hot yet , but there doesn't seem to be much air flow.
Maria Isabella ErikssonMay 7 2026
Look and feels really good
Jonathan Aguilar BonillaApril 23 2026
Me gustó mucho aunque me vino pequeño y todavía estoy a la espera de la confirmación de la devolución
PhilApril 15 2026
Sadly had to return this as the size ordered (correctly measured head size) was too tight but got a replacement with no fuss at all...Katie went above and beyond to assist me.
Eric EhrenreichApril 14 2026
Perfection in Design and Materials
Diego Aguado HernandezApril 14 2026
Me encanta!