

BlueWave Hunter D-Ring (Final Sale)
- Best for
- for hunter ring horses needing stability and lateral control
- Feel
- wide port that prevents tongue compression
- Material
- Sweet Iron
- Thickness
- Medium (13-15mm)
- Ships from
- Burlington, Ontario
- Returns
- No, this is a final sale item
Dressage legality
- USEFLegal
- ECLegal
- FEILegal
- USEALegal
- EC EventingLegal
FEI Young Horse classes also require a 14mm minimum mouthpiece.
BlueWave mullen mouthpiece features an anatomically curved extra wide port and meticulously rounded edges to provide exceptional comfort while maintaining clear communication.
Made of sweet iron this mouthpiece over time will develop a thin layer of rust that releases sweet taste that many horses enjoy.
This bit offers the maximum tongue relief among our mullen mouthpieces featuring both a curve and a port. The forward-curved port design works in harmony with the natural shape of the tongue, providing ample space for movement and swallowing.
The D Ring cheekpiece is a gentle yet versatile choice and is suitable for all training levels. It can be useful to think of a D Ring cheekpiece as a hybrid between the eggbutt and the full cheek offering both stability and enhanced lateral control by applying some pressure on the cheeks when steering. D-Ring cheekpieces are particularly popular in the Western and Hunter rings.
Mouthpiece thickness: 13mm
Please note that sweet iron bits oxidise naturally and the blue parts will over time develop a thin layer of rust and turn brown/grey. This is by design as the "rust" is what creates the taste so many horses love.
We don't make this one in every size yet. Tell us which you need and we'll count you in. Enough riders asking is how new sizes get made.
Thank you. We've noted it. If this size launches, we'll get in touch.
That didn't go through. Please check the email address and try again.
Done. We'll email you when it's back in stock. No newsletter signup, just the one note.
That didn't go through. Please check the email address and try again.
⚠ Non-Returnable. This item is final sale and cannot be returned or exchanged.
Questions riders ask about this bit
Riders often choose this bit for:
- Horses that need the most tongue space: a wide, pronounced port
- Thick tongues
Worth knowing:
- The port sits high, so the horse needs enough vertical room in the mouth
- Not for horses that chew the bit with their teeth: the port gives molars something to grab
- This bit will rust, and it needs to: the surface patina is what creates the warm, sweet taste. Do not submerge it in water or expose it to excessively humid or moist environments, and always wipe it dry after use to ensure longevity and function
The D-ring gives the stability of a fixed ring with a wide, steady contact area.
Every horse is an individual. If you are not sure, take our two minute quiz or write to hello@agadors.com and we will help you decide.
The blue is not paint or dye. Sweet iron is treated at high heat while the bit is made, which makes it react with oxygen and form an oxide layer, and that layer is blue. As you ride, it oxidises further and turns brownish grey. Eventually the blue areas lose their colour completely. Every stage of that is normal and the bit is safe throughout.
We use sweet iron because the patina tastes warm and slightly sweet, which encourages a horse to salivate and soften. Trust the rust.
Every sweet iron bit on the market does this, whoever makes it. If it is not what you expected, a metal bit that is not final sale can come back within 30 days.
Do not soak it and do not leave it to air dry. If it gets properly wet, dry it fully and put a thin layer of food-safe oil, canola or flax, on the hinges and barrel. Store it somewhere dry with air moving around it. Rough patches can be smoothed with superfine wet-and-dry sandpaper.
Frequent soaking or washing lets rust build up inside the hinge, which fills the space the joint needs to move. Humid storage does the same thing slowly.
To free it up, dry it thoroughly, work a little food-safe oil into the hinge and move it back and forth. Then switch to wiping dry after rides instead of washing.
If it is properly seized, send us a short video. If a hinge left the workshop too tight, that is ours to fix and we will replace it.
Bit size is the width of the mouthpiece. We list inches. Some bits are stamped in centimetres, so a bit marked 13.5 is 13.5cm, which is our 5.5".
Measure your horse rather than going by their height. A 17hh horse can have a 5" mouth. If you already have a bit that fits well, measure that instead and match it.
Fixed cheek (eggbutt, Baucher, D-ring, full cheek): about 0.5cm of clearance each side. Loose ring: up to 1/8" between the corner of the lip and the bore hole each side. If you ride in bit guards, or your horse has fleshy lips that catch, order a quarter inch up from your fixed-cheek size.
Too wide slides side to side and can pinch the corners. Too narrow presses on the lips. If your current bit fits with no room at all, stay at that size. If it "just" fits, go up a quarter inch.
Send us a photo of your horse in their current bit and we will tell you what we see.
Most of our metal bits, yes, within 30 days, for a refund or an exchange, and we do take them back used. That is the point of the 30 days: a bit you have not ridden in tells you nothing.
What happens to it then is that we resell it as a Demo unit, clearly labelled and priced lower, rather than as new. That is also where the demo units on this site come from.
Three things cannot come back: rubber mouthpieces, Final Sale items, and Demo condition bits. Rubber because it cannot be brought back to a saleable state, and the other two because they have already been through this once. All three are marked in the product title and description.
You can add return coverage at checkout, which gets you a free return label. If you skip it you can still use the returns portal, and the label cost comes off your refund.
We do not run a trial or loaner program.
Ask us. We would rather look at your horse than have you guess.
Useful things to tell us: what they go in now and what is not working, your discipline and whether it needs to be competition legal, the size, and what their mouth looks like inside. Peel the lip back and look at the tongue. Is it fleshy and full, or thin and tucked? Is the palate low? Are the bars sharp to the touch?
A photo of your horse wearing their current bit tells us more than a paragraph.
One thing worth saying up front: the bit is one variable. Saddle fit, dental work, noseband tightness and rider hands cause a lot of what gets blamed on bits. If your horse has changed suddenly, get the teeth and the saddle checked before you change the bit.
Our range runs 10mm to 16mm. For reference, 10mm is narrow, 12mm narrow to medium, 14mm average, and 16mm wide. 14mm is an ordinary thickness in the bit world, not a thick bit.
The counterintuitive part: a horse with a big fleshy tongue usually wants a thinner mouthpiece, not a thicker one. The average horse has around 16mm of space from tongue to palate, so anything over about 14mm starts competing with the tongue for room. More material in a mouth that is already full makes things worse.
Which way up does it go?
Lay the bit flat on a table. The roller or centre link should sit as the highest point. The Agador's lettering and the size should read upright, and the "A" points toward the nostrils.
Our logo placement is not perfectly consistent across the range, because where it lands depends on the bore hole the cheekpiece rings pass through, and some bits work either way up. If it looks odd, send a photo and we will confirm rather than have you guess.
When will my size be back in stock?
A restock is usually 4 to 8 weeks. Canada tends to land first and the US follows about 2 to 3 weeks later, so if you are in the US and it shows in stock for Canada, ask us. We can often ship one across the border, which adds roughly $10 in duties.
Sign up for the restock alert on this page and you will hear the moment your size lands.
Two honest caveats. Some cheekpieces get discontinued and will not return, and we will tell you plainly if yours is one of them. And sizes 6.5" and up are not something we stock regularly, because the orders are too few to justify holding them.
Still deciding? See how this compares with similar bits.
Choose options


- Best for
- for hunter ring horses needing stability and lateral control
- Feel
- wide port that prevents tongue compression
- Material
- Sweet Iron
- Thickness
- Medium (13-15mm)
- Ships from
- Burlington, Ontario
- Returns
- No, this is a final sale item
Dressage legality
- USEFLegal
- ECLegal
- FEILegal
- USEALegal
- EC EventingLegal
FEI Young Horse classes also require a 14mm minimum mouthpiece.
We don't make this one in every size yet. Tell us which you need and we'll count you in. Enough riders asking is how new sizes get made.
Thank you. We've noted it. If this size launches, we'll get in touch.
That didn't go through. Please check the email address and try again.
Done. We'll email you when it's back in stock. No newsletter signup, just the one note.
That didn't go through. Please check the email address and try again.
⚠ Non-Returnable. This item is final sale and cannot be returned or exchanged.
Not sure?
