How do you set up the mounted armbar?

The entry is established by threatening a cross-collar choke, which forces the bottom player to extend one arm upward to defend. The attacker then traps the extended wrist, slides their hips to the trapped-arm side to transition to S-mount, and throws the free leg over the opponent's head.

What makes the mounted armbar difficult to defend?

It is part of a three-attack mount chain that includes the mounted triangle and arm triangle, all sharing the same S-mount setup. Because any defensive response to one attack opens the others, the bottom player must defend all three threats simultaneously.

How can you escape a mounted armbar?

Defensive options include preventing the arm from extending by keeping elbows tight to the centerline, rolling toward the attacker to disrupt the angle, or stacking the attacker forward to compress the position. Once the attacker has fallen back, options are limited to tapping or attempting to hitch-hike the arm out.

What are common mistakes when attempting this technique?

Common errors include attempting the armbar without a choke setup, failing to S-mount before throwing the leg over, and falling back without trapping the wrist first. Other mistakes involve crossing the ankles after falling back or pulling on the wrist instead of extending the hips.

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ARMBAR FROM MOUNT

Armlock da Montada

In Short

The mounted armbar is a canonical submission that utilizes the dominant top position to trap an opponent's extended arm. It is typically set up by threatening a cross-collar choke, forcing the opponent to extend their arm upward for defense. The attacker then transitions to S-mount and falls back to complete the lock.

Also known as: Mounted Armbar, Juji-Gatame from Mount

The armbar from mount is one of the canonical mount submissions and the natural follow-up to a defended cross-collar choke. Where the closed-guard armbar requires building an angle from underneath, the mounted armbar uses the dominant top position as the starting point — the leg swings from above rather than from below, gravity assists rather than resists, and the bottom player's defensive options are dramatically narrower.

The entry is established when the bottom player extends one arm upward to defend a choke or to push the attacker's body — typically a hand-fight against the cross-collar grip or a frame against the chest. The attacker traps the extended wrist with one hand, slides their hips to the trapped-arm side as they transition to S-mount, throws the free leg over the bottom player's head, and pivots backward to fall toward the bottom player's hips, completing the armbar with both legs across the body and the trapped arm held against the attacker's chest.

What makes the mounted armbar particularly devastating is its position within the three-attack mount chain (armbar, mounted triangle, arm triangle) that share the same S-mount setup. Any defensive response the bottom player chooses opens one of the other two attacks, which means the bottom player must defend all three threats simultaneously to escape. Roger Gracie's career featured this chain extensively, and the mounted armbar remains a top-five submission from mount at every level of IBJJF and ADCC competition.

Defensively the mounted armbar is escaped by preventing the arm from extending upward in the first place (keep both elbows tight to the centerline from the bottom of mount), by rolling toward the attacker as the leg swings over to disrupt the angle, or by stacking the attacker forward to compress the position before the fall completes. Once the attacker has fallen back to complete the armbar, the only options are tap-to-grip or attempting to hitch-hike the trapped arm out — both low-percentage at the highest level of competition.

KEY POINTS

01Set up the armbar with a cross-collar choke threat first; the choke forces the arm to extend.
02Trap the extended wrist with one hand, threading through if needed.
03Transition to S-mount, sliding hips to the trapped-arm side.
04Throw the free leg over the opponent's head as you pivot backward.
05Fall toward the opponent's hips with both legs across the body and the trapped arm clamped to your chest.
06Finish with hip extension; never pull only with the arms.

COMMON MISTAKES

✕Attempting the armbar without a choke setup first, giving the opponent no reason to extend the arm.
✕Failing to S-mount before throwing the leg over, leaving the angle square.
✕Falling back without trapping the wrist first, losing the arm during the fall.
✕Crossing the ankles after falling back, which weakens the knee pinch.
✕Pulling on the wrist instead of extending the hips to finish.

TRAINING DRILLS

→Choke-to-armbar setup: from mount, drill the cross-collar grip that forces the arm to extend.
→S-mount transition: 30 reps per side of the mount-to-S-mount slide.
→Leg-throw-and-fall drill: combine the leg over the head with the backward fall.
→Three-attack-chain drill: drill choke → armbar → triangle from a single mount entry.
→Live mount rounds with the three-attack chain as the only allowed finishes.

NOTABLE PRACTITIONERS

Roger Gracie · Mica Galvao · Royce Gracie

Frequently Asked

How do you set up the mounted armbar?: The entry is established by threatening a cross-collar choke, which forces the bottom player to extend one arm upward to defend. The attacker then traps the extended wrist, slides their hips to the trapped-arm side to transition to S-mount, and throws the free leg over the opponent's head.
What makes the mounted armbar difficult to defend?: It is part of a three-attack mount chain that includes the mounted triangle and arm triangle, all sharing the same S-mount setup. Because any defensive response to one attack opens the others, the bottom player must defend all three threats simultaneously.
How can you escape a mounted armbar?: Defensive options include preventing the arm from extending by keeping elbows tight to the centerline, rolling toward the attacker to disrupt the angle, or stacking the attacker forward to compress the position. Once the attacker has fallen back, options are limited to tapping or attempting to hitch-hike the arm out.
What are common mistakes when attempting this technique?: Common errors include attempting the armbar without a choke setup, failing to S-mount before throwing the leg over, and falling back without trapping the wrist first. Other mistakes involve crossing the ankles after falling back or pulling on the wrist instead of extending the hips.