
K2 Diversion Helmet | Black (No Box/Ex Display)
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K2 Diversion Helmet | Black (No Box/Ex Display)
K2's go-to hybrid lid, certified for snow and bike.
The K2 Diversion is K2's go-to hybrid helmet: low profile, dial-adjust fit and adjustable vents, so you forget you're wearing it. It's made for riders who do it all, from tree runs to fast groomers, and it's also bike certified so it can pull double duty off the hill. This one is an ex-display helmet sold without its original box, with some minor scratches and marks, in Black.
Hybrid construction pairs a light in-mold base with a tougher hardshell upper. The 360° K2Dialed fit system spreads pressure evenly around your head and tightens with a twist of the dial, Dual Active Matrix venting lets you open and close vents on the fly, and the Tech Form Full Wrap liner has removable ear pads and neck roll for warmer or cooler days.
Key Features
- Hybrid construction: in-mold base, hardshell upper
- 360° K2Dialed fit: even pressure, dial adjust
- Dual Active Matrix venting: adjustable plus passive vents
- Tech Form Full Wrap liner: removable ear pads and neck roll
- Snow and bike certified: ASTM F2040, EN 1077, CPSC
- Baseline Audio: pre-installed speaker kit
Specs
- Shell: Hybrid: in-mold base with hardshell upper
- Liner: EPS foam
- Certifications: ASTM F2040, EN 1077, CPSC (bike)
- Fit system: 360° K2Dialed
- Padding: Tech Form Full Wrap liner, removable ear pads and neck roll
- Vents: Dual Active Matrix (adjustable) plus passive channels
- Audio: Baseline Audio System pre-installed speaker kit
- Sizes: S, M, L/XL
- Colourway: Black
- Condition: Ex-display, no box
Certifications
Certified for: Snowboarding, Skiing, Bike and e-bike riding
- ASTM F2040: US snow sports helmet standard
- EN 1077: European ski and snowboard helmet standard
- CPSC 1203: US bicycle helmet standard, accepted in Australia for bike riding
K2 lists this model as Snow Certified (F2040 + EN1077) and Bike Certified (CPSC + EN), so one helmet covers the mountain and the bike path.
Size Guide
Wrap a soft tape around your head about 2cm above your eyebrows, over the widest point and just above your ears. If you're between sizes, K2's dial fit lets you snug down a larger size, but the helmet should sit level and not move when you shake your head. Always try it with your goggles on.
| Size | Head circumference | Inches |
|---|---|---|
| S | 51–55cm | 20 1/2"–21 5/8" |
| M | 55–59cm | 22"–23 1/8" |
| L/XL | 59–62cm | 23 1/2"–24 3/8" |
The 360° K2Dialed dial fine-tunes the fit within each size.
About K2
K2 started on Vashon Island, Washington, in the early 1960s, when Bill Kirschner began building fibreglass skis that were lighter and livelier than the wood and metal skis of the day. K2 jumped into snowboarding in the late 1980s and went on to launch the Clicker step-in binding in the 90s.
Today K2 builds snowboards, boots, bindings and helmets out of Seattle. Its helmets are known for the dial-adjust K2Dialed fit system, Active Matrix vents and, on selected models, dual certification for both snow and bike riding. Riders choose K2 for gear that's dialled, comfortable and made to last a whole season.
FAQs
Can I use the K2 Diversion for bike riding?
Yes. K2 certifies the K2 Diversion for snow (ASTM F2040 and EN 1077) and for cycling (US CPSC, which is accepted in Australia for bike helmets). So you can ride it on the mountain and on your bike or e-bike. Check the certification label inside the helmet if you're unsure.
What size K2 Diversion should I get?
Measure about 2cm above your eyebrows and match it to K2's chart: S 51–55cm, M 55–59cm, L/XL 59–62cm. The 360° K2Dialed dial takes up small differences; between sizes, try both and pick the one that sits level without pressure points.
When should I replace my helmet?
Replace it after any significant impact, even if you can't see damage. The EPS foam inside is designed to crush once to absorb a hit, so a helmet that has taken a big crash may not protect you the same way again. Also replace it if the shell is cracked, the foam is dented or the strap or buckle is damaged.
Can I take the ear pads out of the Diversion?
Yes. The ear pads and neck roll on the Tech Form liner are removable, so you can strip them out for warm spring days or bike riding and keep the fit system in place.
Does the K2 Diversion have audio?
Yes. It comes with K2's Baseline Audio System, a pre-installed low-profile speaker kit that connects to your phone for music and calls.
Why Buy From Twelve Board Store
- ✔️ Free shipping Australia-wide on orders over $90
- ✔️ Expert snow advice from real riders, 7 days a week
- ✔️ Easy returns for a hassle-free experience
- ✔️ Huge range of skate, snow & electric gear
- ✔️ Proudly Australian owned & operated
Dialled on the mountain since the 60s.
Shipping
FREE shipping Australia wide on this product. Orders are dispatched within 1–2 business days, with estimated delivery of 3–7 business days to metro areas and 5–10 business days to regional and remote locations. You will receive tracking details by email as soon as your order ships.
Returns
Enjoy 30-day change-of-mind returns on unused items in their original, undamaged packaging. Faulty or incorrectly supplied items are covered by a hassle-free replacement or full refund — just reach out and we will take care of it.
Warranty
Every product is backed by the full manufacturer's warranty against defects in materials and workmanship, in addition to your rights under the Australian Consumer Law. If anything goes wrong, contact our team at support@twelveboardstore.com.au and we will arrange assessment, repair, replacement or refund as appropriate.
Found it cheaper? We will beat any Australian authorised retailer price. Contact us at support@twelveboardstore.com.au.
THE ORIGINALSINCE 1962
AN AMERICANORIGINAL
- Established1962, Washington State
- Snowboards since1987
- Women's firstProducts engineered for women from 1999
- At our shopBoards, boots, bindings and helmets

TUNED FROMTIP TO TAIL
- Spectral BraidFlex tuned tip to tail and torsionally
- HybritechTrimmed sidewalls, lower swing weight
- Carbon stringersSnap without extra stiffness
- Sintered basesWax infused 4001 on Commonwealth and Excavator

RIDE ITSHORTER
- BoardExcavator 2027
- Size downAbout 4 to 10cm
- ProfileDirectional camber
- TailCarbon Power Fork for energy out of turns

FIT FIRST,THEN FLEX
- LinerIntuition Control Foam 3D, heat mouldable
- LacingConda powered by BOA, plus BOA H5
- DampingHarshmellow underfoot
- HeelEndo 3.0 heel counter

BUILT ON THEMODULE CHASSIS
- ChassisModule, with MultiMount ankle straps
- Footbed3 degree canting with Harshmellow pods
- RatchetsAircraft grade aluminium
- Packaging100% recyclable

WHICH K2IS FOR YOU
Passport
A tapered directional freeride board that still rides switch, for intermediate to expert riders.
- Terrain
- Freeride and all-mountain
- Profile
- Combination camber, rocker through the tip
- Flex
- Light and snappy, A1 Core with carbon
- Shape
- Tapered directional
Commonwealth
Built on the Passport's shape with a heavier build for higher speeds and steeper terrain.
- Terrain
- Freeride, big mountain, groomers
- Profile
- Camber
- Flex
- Stable at speed, Spectral Braid tuned
- Shape
- Tapered directional
Excavator
A wide, tapered freeride board with Volume Shift, made for deep carves and powder.
- Terrain
- Freeride, powder, groomers
- Profile
- Directional camber
- Flex
- Smooth and damp, Carbon Power Fork tail
- Shape
- Tapered directional, Volume Shift
Dreamsicle
A women's all-mountain board for one board days in the park, on groomers and in powder.
- Terrain
- All-mountain and park
- Profile
- Directional rocker, flat between the feet
- Flex
- Snappy and agile, Rhythm Core
- Shape
- Directional
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K2 Program Snowboard Binding 2027 | Dopamine Storm Cycle
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K2 ON SNOW
















