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High Speed Defense

5 ★★★★★ 3 Google reviews · BJJ gym in Chelmsford, Massachusetts

BJJ gym

Plan your first class

Hours

Monday 5–8:30 pm
Tuesday 5–8:30 pm
Wednesday 5–8:30 pm
Thursday 5–8:30 pm
Friday Closed
Saturday Closed
Sunday Closed

Hours shift for holidays, seminars, and open-gym times — worth a quick check before a special trip.

Other martial arts here

BJJ gyms are usually multi-discipline. Here's what else members mention training under the same roof at High Speed Defense — mined from their reviews and the gym's own info.

🏟️ MMA

“You will improve on all areas of MMA.”

Other gyms that also teach mma →

Disciplines are mined from reviews and the gym's own info — they show what members have trained, not a formal class guarantee. If you specifically want MMA, muay thai, or wrestling alongside your BJJ, confirm the current schedule with the gym.

From the reviews

The attention and detail in this school is top notch. You will improve on all areas of MMA.

★★★★★ — Ian, Sep 2017

Excerpts from public Google reviews. Read all 3 reviews →

Your first BJJ class at High Speed Defense

Nervous about walking into a BJJ gym for the first time? Almost everyone is, and good coaches expect beginners to come through the door. Here's what to know. What to expect: a typical first class is a warm-up, then drilling basic positions and escapes with a partner — not hard sparring. Rest whenever you need to; no one will bat an eye. What to wear: athletic wear you can move in (or a gi if you have one); you'll train barefoot on the mats. What to bring: water and a mouthguard if you have one — many gyms lend a loaner gi for a first class, so it's worth asking when you call. As you keep training you'll add your own gi (or a rashguard and shorts for no-gi) and a mouthguard. Live rolling eases in gradually, once your fundamentals are solid. Arrive 10–15 minutes early to sign a waiver and meet the coach. It gets easier fast — most people feel far more at home by their third class.

BJJ is a contact sport. Ease in, tap early and often, listen to your coaches, and if you have any injuries or health concerns, mention them before class and check with a doctor if you're unsure.

Where to find High Speed Defense

17 Alpine Ln, Chelmsford, MA01824

Get directions

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Listing verified July 2026 from public business records and member reviews. Something out of date? Report a correction. Own this gym? Claim your listing — it's free.