Name: Rhoan: CORE
Brand: KAV
Price: 300.0 USD
Availability: InStock
Rating: 4.6 (30 reviews)

Rhoan: CORE

$300

What hits the wind first matters most.
Most helmets force a choice: speed or cooling. Rhoan is built different—3D printed to channel air, shed heat, and custom-built to your exact fit.
Benchmark aero. Airflow you can feel. Comfort all day.

Rhoan: CORE Bicycle Helmets KAV Atomic Black Black

Nova.PDP.page.2nd.frame.type.2 08b20439 43c8 4f10 926e 1b169a0d7306 image

Rhoan: CORE

$300

What hits the wind first matters most. Most helmets force a choice: speed or cooling. Rhoan is built different—3D printed to channel air, shed heat, and custom-built to your exact fit. Benchmark aero. Airflow you can feel. Comfort all day.

Custom-built. Delivered in 3–4 weeks after fit approval.

Shells:

Hex Structure:

Custom-built. Delivered in 3–4 weeks after fit approval.

Benchmark aero • Airflow you can feel • Virginia Tech 5-Star Safety Rating • BEST NEW BIKE GEAR: SEA OTTER 2025, GEAR JUNKIE

30-Day: Full Refund Guarantee

100% Crash Replacement Program

5 year warranty

Made in USA

1: Order & Scan

After your purchase you will receive an order confirmation email with a link to download our KAV Fit App.Using just one photo, our app captures every contour, every curve of your head, ensuring your helmet is crafted to match your unique shape.

2: Fit Confirmation

After receiving your scan, we 3D print a "Fit Cap" mirroring your future helmet's interior. This cap is sent to your doorstep, allowing you to experience the fit and comfort firsthand.Your Fit Cap, comes with a QR code that you scan providing options to approve the fit or request adjustments, ensuring your helmet will be perfect.

3: Craft & Delivery

Once you approve the fit cap, our experts start the meticulous process of crafting your helmet. We adjust every detail to match your unique head shape, ensuring optimal comfort and protection.

Learn More Here

Rhoan stands among the fastest helmets on the market, within 0.001 CDA, or ~1 watt at 40km/h—while delivering airflow, cooling, and comfort they can’t touch.

The Rhoan earned a 5-Star Virginia Tech Safety Rating through a ground-up reengineering of impact protection.

At its core is our Hex Honeycomb Structure 2™ — a dual-density, 3D-printed lattice with independent hexagonal cells that deform asymmetrically to manage both linear and rotational energy.

This architecture eliminates the need for traditional slip-plane systems by integrating rotational management directly into the structure, resulting in lower weight, improved ventilation, and uncompromised real-world performance.

A 1°C rise in core temperature can reduce performance by up to 1.5%.

The Rhoan is made from our proprietary PolyCarbon Composite™ that wicks heat 8x better and cools 2x faster than standard EPS foam—helping you delay thermal fade and hold watts longer.

The Air Fit Suspension and HexFlow™ Rear Exhaust work together to create full-helmet airflow. Heat is actively pulled away from your scalp—maintaining focus, control, and comfort, even on the hottest days.

Our next-gen Hex Honeycomb Structure 2™ acts as a thermal scaffold, channeling air through its open-cell design. It improves both impact absorption and heat dissipation without adding weight or bulk.

Designed and manufactured in the USA using a net zero production process—delivering innovation, sustainability, and performance without compromise.

What People Are Saying

Very light and comfortable. I like the style and it was a very easy process to get fitted for this unique helmet.

Richard. _ 12/30/25

As someone who was always on the smaller side of a medium, but too large for a small, I had to put up with helmets that looked oversized and needed to be ratcheted down to stay put. This one fits so well I don’t even need the ratchet.

Lane. _ 05/13/26

It feels great throughout long rides and I even forgot to take it off after a ride recently! Do yourself a favor and order the perfect helmet - for comfort, safety, design, weight, and ventilation!

Claudia G. _ 11/06/25

I always stick to the same couple of helmet brands because I know they fit. I’m hesitant to try something new if I can’t try it on but that wasn’t the case with KAV. The process was easy and the helmet fits perfectly!

Jake. _ 04/27/26

I finally have a helmet that doesn’t look ridiculous on my head.

Michael. _ 03/05/26

Aerodynamics That Actively Cool

Engineered to harness the Venturi effect, the HexFlow™ Rear Exhaust accelerates air as it exits the helmet—pulling heat and moisture away from your head with every effort.

Working in tandem, the Air Fit Suspension System lifts the helmet off your scalp to create uninterrupted airflow throughout. The result: better cooling, reduced core temperature, and sustained power when it matters most.

2x Larger Front Vents

Strategically placed lower on the brow to funnel cooling air directly to the forehead, where thermoregulation is most effective.

It’s not just about vent size—it's about vent placement that works with your physiology.

A Fit That Breathes

Our Air Fit Suspension System™ suspends the helmet off the head, eliminating pressure points and maximizing ventilation.

This all-around airflow helps reduce hot spots and maintain a cooler, more stable core temperature throughout your ride.

5-Star Virginia Tech Safety Rating

The Rhoan’s Hex Honeycomb Structure 2™ uses a dual-density, 3D-printed design that adapts independently on impact — absorbing energy from both direct hits and rotational forces.

This advanced structure eliminates the need for bulky add-ons, reducing weight while enhancing real-world safety and comfort.

Lock In. Ride On.

Redesigned and 3D printed for real-world use, the new sunglass ports make it easy to stow your shades mid-ride—and keep them secure, even over rough terrain. No slipping. No rattling. Just smart, ride-ready utility.

WHICH HELMET
IS RIGHT FOR YOU?

Two approaches to performance.
Built around the same KAV philosophy.

Fit

Safety

Aerodynamics

Lead Time

Best For

Price

RHOAN

Fully custom-fit built around your exact head shape

5-Star Virginia Tech Rated

Wind-tunnel-developed aero performance

Built after completing the custom fit process

Riders chasing aerodynamic gains, custom fit, and maximum personalization

$300

Silvo

Shaped from 5,000+ rider scans across three optimized sizes

5-Star Virginia Tech Rated

Performance-focused road design

Ready to ship

Riders who want intelligent fit and KAV performance without the custom process

$200

Both helmets are built around KAV’s 3D-printed protection philosophy and Virginia Tech 5-Star safety. The choice comes down to whether you want ready-to-wear performance or a fully personalized fit experience.

GET OUT THERE™

SPEED MATTERS EVERYWHERE

4x5 0000s 0006 490101532 18061462775511158 5884234231932689389 n image

4x5 0000s 0007 488510156 18060394475511158 1762977470241590 n image

WHY RHOAN ISN’T BUILT LIKE A STANDARD HELMET

Custom-fit. 3D printed. Engineered beyond foam.

Built from a personal fit scan

Custom aero profile

Optimized for Rotational & Linear Forces

Virginia Tech 5 Star + 50% Above CPSC Safety Standards

Crash Replacement

Warranty

Proudly Crafted in the USA

RHOAN

100%

5 Years

TRADITIONAL EPS
FOAM HELMETS

35%

2 Years

Frequently Asked Questions

After your purchase you will receive an order confirmation email with a link to download our KAV Fit App.

With a few simple taps, our KAV Fit App will capture your unique contours, for a helmet that’s made exclusively for you.

Our KAV Fit App uses a single photo to extract over 100 data points from 18 facial features — leveraging advanced image analysis to ensure a personalized, precision fit.

The whole process from order to delivery of your custom helmet takes as little as two weeks + shipping.

The Rhoan earned a 5-Star Virginia Tech Safety Rating through a ground-up reengineering of impact protection.

At its core is our Hex Honeycomb Structure 2™ — a dual-density, 3D-printed lattice with independent hexagonal cells that deform asymmetrically to manage both linear and rotational energy.

This architecture eliminates the need for traditional slip-plane systems like MIPS, by integrating rotational management directly into the structure, resulting in lower weight, improved ventilation, and uncompromised real-world performance.

Features unique to the new Rhoan Helmet:

•The Rhoan is 20% lighter than the Nova

• 6mm on average narrower than the Nova

• The interior has been redesigned with our all new internal Air Fit Suspension and HexFlow™ Rear Exhaust, which work together to create full-helmet airflow. Heat is actively pulled away from your scalp—maintaining focus, control, and comfort, even on the hottest days.

Every helmet is custom made so even for the same circumference, your head shape can change the size by +/- 20 grams. However someone who is in the middle of medium (~57.5 cm circumference) can expect their KAV Rhoan helmet to weigh 300grams.

Our helmets are engineered with our proprietary Hex Honeycomb Structure 2™ which has the most efficient energy absorption to weight ratio or crumple zone design to redistribute energy & force upon impact.

Yes, the Rhoan features a rear ratchet mechanism built into them that allows 8-10mm of travel ensuring both a snug fit as well as giving your custom helmet a bit of play to account for the winter season or a new haircut.

"This is the best helmet I’ve ever owned. Well worth the wait. Hardest part was adjusting the strap placement around my ears. Now all I have to do is put it on my head and clip the strap. No more adjusting the back closure and looking in the mirror to make sure it is not crooked on my head. Fits perfectly every time."

John M. ✅ Verified Reviewer

Overall rating: 4.6 / 5 from 30 reviews.

AI Generated Review Summary

Summary topics

Review topics: [].

Review highlights

Reviews

"The comfort is excellent, and the communication with the company was also great. It has typical 3-D printed textures I should have expected, but these don’t take away from any aesthetics from a distance nor the comfort of the helmet. Extremely light and very excited to have it. I will likely recommend the premade Silvo to my weekender friends rather than the custom Rhoan now that it’s available."

— Marquis (5/5)

Best Helmet I've Ever Owned

"I needed to buy a New Helmet and Talked with Our Current Buffalo Cycling Champion James, I was Impressed with what He had to Say about KAV Helmets, Custom Fit, Excellent Ventilation, Aero Design, and Safety Ratings! My Friend Noel already had a KAV Helmet too and Loved it, So I decided to Order One and Couldn't be Happier! Would Love to See a Hi Viz Yellow in the Future Color Choices."

— Bob D. (5/5)

"Already crashed in it and it almost certainly saved my life. Helmet was destroyed but I only wound ip with a headache for a couple of days when i should have had a major concussion or worse. So i can vouch for the safety first hand. It is really comfortable, fits perfectly, and is quite cool in hot conditons. Any airflow at all is directed to optimize cooling and it works. i’m between sizes in off the shelf helmets and i always worried about the fit. This solves rhat problem."

— John (5/5)

A new staple for long rides

"The Rhoan CORE is my new favorite helmet. The 3D-printed lattice provides incredible ventilation, keeping me cool even during high-intensity intervals. Its aero profile feels exceptionally fast, yet it doesn't sacrifice the safety standards I look for in high-performance gear. It’s the perfect blend of cutting-edge tech and reliable protection. 5/5"

— Alex O. (5/5)

Awesome Helmet!

"Love my KAV Rhoan! No issues with cooling and inside in hot and humid conditions all summer. Very lightweight and aero. Customer service has been great as well!"

— Sam B. (5/5)

Great fit!

"I always stick to the same couple of helmet brands because I know they fit. I’m hesitant to try something new if I can’t try it on but that wasn’t the case with KAV. The process was easy and the helmet fits perfectly!"

— Jake (5/5)

Snug, but not tight, it

"Snug, but not tight, it fits terrific! First ride out I noticed how much cooler my head was with the air flow!"

— Ryan (5/5)

A truly unique helmet

"KAV have been fantastic in helping blind rider Ian Beverly from the UK to get a unique fitted helmet. Ian was born with a uniquely shaped head incapable of fitting a conventional helmet, the rules of his local visually impaired tandem club requires a properly fitting helmet, so without KAV Ian would not have become a regular tandem rider. The whole KAV process has been wonderful and produced a 100% perfect fitting helmet - unbelievable!"

— Barney H. (5/5)

Finally

"I finally have a helmet that doesn’t look ridiculous on my head. Not sure what it is about my head shape, but most helmets I’ve tried on just never really looked right. Sure they fit well and did their job, but let’s be honest…we’re after aesthetics as well. I took a chance and ordered a Rohan core and while it did take a little bit longer than expected to arrive it was worth the wait. It fits like a dream and looks super sleek as well. I’ve used it on a handful of rides so far, mostly 60 degree weather, but did test it out on around a 75 degree day and didn’t feel like my head was over heating at all (I know 75 degrees isn’t the best test, but it’s still winter). If you’re in the market for a new helmet but have a little bit of time/patience to wait for it to be made and shipped I highly recommend going with this."

— Michael (5/5)

"Loved it ! Fits well."

— Elizabeth (5/5)

Cart

Rhoan: CORE