One K · Custom Color System
One K CCS Helmet Builder: Mix Shields, Top Panels and Rails
One K advertises 2,100+ looks from three swappable parts.
A One K CCS helmet changes its look without changing the helmet: swap the front shield, top panel and vent stripe rail for the hunter ring, a big class or barn colors. Build your look below, then shop the set.
Favorite looks
Tap a look to try it, then change any part to make it yours.
1Your helmet
Top panels and rails come in your shell size (XS–M take M, L takes L, XL–2XL take XL). Front shields are one size.
2Your look
3Buy
Choose your size and shape in step 1 to see exact parts.
Add to cart takes you to your Tack of the Day cart.
One K CCS looks to try: named combinations for every ring
One K CCS looks come down to three choices on a One K CCS helmet: the front shield, the top panel and the vent stripe rail. Each named look below is a Favorite look in the builder above: tap its name there to load it, and every part stays open to change, so a look is a starting point and never a fixed set. Quiet combinations sit first for the hunter ring, and the louder ones follow for jumper classes, clinics and schooling days at home. Every look is written as front shield, top panel, then rail, the same order the builder uses, so you can read a line here and find each part there.
What the One K Custom Color System (CCS) changes on a helmet
The One K Custom Color System (CCS) changes three parts of a One K CCS helmet: the front shield above the brim, the top panel at the center of the dome, and the vent stripe rails that frame the panel. The shell and the liner are untouched, so only the look of the helmet changes.
One K advertises more than 2,100 looks from those three parts, and its product pages say of CCS helmets: "Swap out the top panel, stripe rails, and/or front shield to reflect your style." Riders use CCS parts to match barn colors, to dress one helmet up for a big class and back down for the hunter ring, and to freshen a CCS helmet that has seen a few seasons of schooling.
Which One K helmets take CCS shields, panels and rails
One K CCS shields, top panels and rails fit four One K helmets: the One K MIPS CCS Helmet, the One K MIPS CCS Avance Wide Brim Helmet, the One K MIPS Jr CCS Helmet and the One K Defender MIPS CCS. One K does not sell the standard Defender or Defender Jr as CCS helmets, so start from one of these four. Riders tell us One K fit them when other helmet brands did not. Look elsewhere if you would rather choose by shape and brim than by color: One K MIPS vs Defender vs Avance Helmets sets the three side by side.
I CANNOT fit in a CO. I tried both Samshield and One K (was prepared to buy whatever fit better), and it was the One K.
I also have a weird shaped head like you. I would definitely try either OneK or Samshield. Those are the only two that I've ever tried on that fit me. They fit me the same, but the OneK is about 1/2 the price and better looking (IMO).
Which size One K CCS top panel and rail fits your helmet
One K CCS top panels and vent stripe rails follow your One K helmet's shell size on One K's size guide: Medium parts fit XS, S and M helmets, Large parts fit L helmets, and X-Large parts fit XL and 2XL helmets. One K CCS front shields are one size and fit every CCS helmet, which makes the shield the easy first part to try.
Round and Long Oval One K helmets of the same size take the same top panel and rail. Buy the panel and the rail in the same size so the two clip together. Still choosing the helmet itself? The Helmet Fit Guide walks through measuring and head shape before you pick parts.
Front shield, top panel or rail: what each CCS part changes
The One K CCS Top Panel changes the most color on a One K CCS helmet, the One K CCS Front Shield is what a judge sees first, and the One K CCS Vent Stripe Rail is the accent line between them. Start with the One K CCS Front Shield for a one-part change, add a One K CCS Top Panel or a patterned One K Designer CCS Top Panel for a full color change, and finish with a One K CCS Vent Stripe Rail or the crystal One K CCS Accessory Rail. The One K CCS MIPS Refit Liner freshens the inside of the same helmet.
Chrome and rose gold One K helmets: factory rail or add-on
One K sells the One K MIPS CCS Helmet with a chrome or rose gold vent stripe rail already fitted, and the One K MIPS CCS Avance Wide Brim Helmet with a rose gold rail, so a rider who wants that rail can start from the factory helmet instead of buying a rail separately. The builder above makes that choice for you: pick a chrome or rose gold rail and, where One K makes that helmet with the rail fitted, the set starts from the factory helmet.
To bring rose gold or chrome to a One K CCS helmet you already own, two parts make the change: the One K CCS Vent Stripe Rail and the One K CCS Front Shield. The rail alone reads as a pinstripe of metal; add the shield and the whole front of the helmet carries it.
How to swap One K CCS shields, top panels and rails
One K CCS shields, top panels and rails release with the key One K packs with the helmet, or with a coin, so a color change is a few minutes at the tack trunk rather than a new helmet. The three steps below follow One K's CCS instructions. Keep the key in your helmet bag so it is at the show when you want a change between classes.
- Pull the front shield back from between the mesh vents, using the included One K key or a coin to release it.
- Lift the top panel and the side rails off the shell together, then unclip the rails from the panel.
- Clip the new panel and rails together and reassemble in reverse order, finishing with the front shield, as One K's instructions describe.
What riders say about One K CCS helmets
Riders who came to One K from other helmet brands describe how the helmet fits and how it looks on.
I’ve always ridden in COs, since I traded in my old hunt cap for an actual helmet. I needed a new helmet this summer to replace my CO MyPS but didn’t like any of the new COs that I tried (AYR8, Halo, and Kylo). I also tried a few Trauma Voids and didn’t like them either. I wound up with a OneK CCS that I love more than any helmet I’ve had in recent memory. It’s very comfy and looks good on my head too.
Second one I am buying (to get a clean one for shows). It's the only one that fits my oval-shaped head! Love it.
The fit is great and it’s a very comfortable helmet. Helmet designs with adjustments in the back cause me occipital headaches. This is the only one that doesn’t. This is my second One K, and I wouldn’t choose any other brand.
I love my One K MIPS helmet, which has a wide brim option. Personally, I wouldn't consider any helmet without the MIPS feature. I previously owned a CO MIPS and *hated* it. Heavy, hot, and ill-fitting.
Shop One K CCS helmets and the parts that change them
One K helmets and CCS parts
Shop all ›One K helmets with CCS shields, top panels, rails and liners
One K CCS Helmet Builder FAQ
What is the One K Custom Color System (CCS)?
The One K Custom Color System (CCS) is a set of three interchangeable parts for One K CCS helmets: a front shield, a top panel and vent stripe rails. Each part swaps for another color or finish while the shell and liner stay the same. Pick a helmet in the builder at the top of this page and try the parts on it.
CloseHow many looks can a One K CCS helmet make?
One K advertises more than 2,100 looks from its CCS front shields, top panels and vent stripe rails. The figure is One K's own count of the combinations the three parts allow across its CCS helmets. Load a named look in the builder, change one part at a time, and stop when the helmet looks like yours.
CloseDo One K CCS parts fit the One K Defender helmet?
One K CCS parts fit the One K Defender MIPS CCS, which ships with a black gloss shield and top panel and black crystal rails. One K sells four CCS helmets: the MIPS CCS, the MIPS CCS Avance Wide Brim, the MIPS Jr CCS and the Defender MIPS CCS. The standard Defender and Defender Jr are not sold as CCS helmets, so check your helmet's name before you order parts.
CloseWhat size One K CCS top panel and rail do I need?
Match the part to your helmet's shell size on One K's size guide: Medium parts fit XS, S and M helmets, Large parts fit L helmets, and X-Large parts fit XL and 2XL helmets. Front shields are one size. Read the size printed inside your helmet, then order the top panel and the rail in the same part size.
CloseCan I change One K CCS parts myself?
Yes. One K's product pages say of CCS helmets: "Swap out the top panel, stripe rails, and/or front shield to reflect your style." One K's instructions use the included One K key, or a coin, to release the front shield; the top panel and rails then lift off together. Follow the three steps in the how-to section above and reassemble in reverse.
CloseSources: Custom Color System description, part sizing, swap instructions and advertised look count, One K, checked November 14, 2026.