Quick Picks
Thin, custom-moldable, and you can actually breathe and talk while wearing it. The go-to mouthguard in BJJ for a reason.
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Solid boil-and-bite at under $10. Better fit than most cheap mouthguards. Does the job.
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You should wear a mouthguard when you train BJJ. A knee to the face during a scramble, an accidental elbow while passing guard, a chin to the top of your head from a bad shot: these things happen. A mouthguard won’t prevent all dental injuries, but it’s cheap insurance against the worst outcomes.
The challenge is finding one that doesn’t make you feel like you’re suffocating. Most people who skip their mouthguard don’t skip it because they’re tough; they skip it because their mouthguard makes it hard to breathe.
Our top pick is the SISU Max 2.4mm. It’s thin enough to breathe and talk through, custom-molds to your teeth, and provides solid protection. If you want something cheaper, the Shock Doctor Gel Max at under $10 is the best budget option.
Types of Mouthguards
Boil-and-Bite (Budget)
You drop it in hot water, then bite down to mold it to your teeth. Most mouthguards in the $5-15 range are this type. The fit varies from acceptable to terrible depending on the brand. Cheap ones are bulky and make breathing difficult. Better ones (like the Shock Doctor Gel Max) get a surprisingly good fit.
Custom-Moldable (Mid-Range)
Brands like SISU use a thinner, more advanced material that molds more precisely to your teeth than traditional boil-and-bite. The result is a slimmer profile that doesn’t obstruct breathing or speech. These run $25-40 and are the sweet spot for most BJJ practitioners.
Custom (Dentist-Made)
A dentist takes an impression of your teeth and fabricates a mouthguard to your exact specifications. Best possible fit, best protection, best comfort. Also $100-400+. Worth it if you’ve already invested in dental work you want to protect, or if you compete seriously.
Our Top Picks
| Mouthguard | Price | Type | Best For |
|---|---|---|---|
| SISU Max 2.4mm | ~$30 | Custom-moldable | Best overall for BJJ |
| SISU Aero 1.6mm | ~$25 | Custom-moldable | Maximum breathability |
| Shock Doctor Gel Max | ~$8 | Boil-and-bite | Best budget |
| Venum Challenger | ~$12 | Boil-and-bite | Budget with case |
| Custom (dentist) | $100-400+ | Custom | Maximum protection |
SISU Max 2.4mm
| Brand | SISU |
| Price | $$ · Check latest price → |
| Type | Custom-moldable |
| Thickness | 2.4mm |
The SISU Max is the most popular mouthguard in BJJ, and it deserves to be. At 2.4mm thick, it’s dramatically thinner than traditional boil-and-bite guards, which means you can actually breathe, talk, and drink water without removing it. It molds to your teeth with hot water and can be re-molded if the fit isn’t right the first time.
The 2.4mm thickness is the right choice for BJJ. SISU also makes a 1.6mm (Aero) that’s even thinner, but the 2.4mm offers better impact protection for a sport where accidental knees and elbows are part of the deal.
At ~$30 it’s more expensive than a basic boil-and-bite, but the difference in comfort is night and day. Most people who switch to a SISU actually wear their mouthguard consistently because it doesn’t feel like a hindrance.
Shock Doctor Gel Max
| Brand | Shock Doctor |
| Price | $ · Check latest price → |
| Type | Boil-and-bite |
The Gel Max is the best cheap mouthguard. At under $10, the gel liner gives a better-than-average fit for a boil-and-bite, and the integrated lip guard adds some protection. It’s bulkier than a SISU, and you’ll notice it more when breathing, but it works.
If you’re not sure whether you’ll actually wear a mouthguard regularly, start here. It’s cheap enough to try without commitment. If you find yourself wearing it consistently, upgrade to a SISU later.
Venum Challenger
| Brand | Venum |
| Price | $ · Check latest price → |
| Type | Boil-and-bite |
Another solid budget option at ~$12. Comes with a carrying case, which is a nice touch at this price. The fit is comparable to the Shock Doctor. Venum’s brand recognition in combat sports means this is what a lot of MMA crossover people default to.
Do You Really Need a Mouthguard for BJJ?
BJJ is lower impact than striking sports, so some people train without one. But dental injuries do happen, particularly during scrambles, takedowns, and when newer training partners are less controlled with their movements. A chipped or knocked-out tooth costs thousands to fix. A mouthguard costs $8-30.
Wear one. Especially during live rolling and open mats.
Upper vs Lower Mouthguard
Almost everyone wears an upper mouthguard only. It protects the teeth most exposed to impact and is easier to breathe around. Dual (upper and lower) mouthguards exist but are overkill for BJJ and significantly restrict breathing.
Frequently Asked Questions
How often should I replace my mouthguard?
Every 6-12 months for boil-and-bite, or when it starts to feel loose or shows visible wear. SISU guards can be re-molded if the fit loosens, which extends their life. Custom guards from a dentist last 2-3 years with proper care.
Can I talk with a mouthguard in?
With a SISU, yes. With a traditional boil-and-bite, barely. This is the main reason people prefer SISU for BJJ; you can communicate with your coach and training partners without removing it.
How do I clean my mouthguard?
Rinse with cold water after every use. Brush it with a toothbrush (no toothpaste, which is abrasive) periodically. Store it in its case, not loose in your gym bag. Some people soak it in mouthwash diluted with water once a week.
The Bottom Line
Best for most people: The SISU Max 2.4mm at ~$30. You’ll actually wear it because you can breathe.
Best budget: The Shock Doctor Gel Max at under $10.
If money is no object: Get a custom guard from your dentist. Best fit, best protection.
A mouthguard only works if you actually wear it. Buy one you can breathe through.
About the Author
Andrew Buck
Andrew is the founder of Find Your Gi. A BJJ brown belt and MMA & Jiu Jitsu coach with over 12 years in combat sports, he also brings a decade of experience writing health and fitness content online.