Bicep Slicer
The bicep slicer wedges a forearm, shin, or knee into the bent elbow, crushing the bicep and brachialis to attack the joint in flexion. Where it is legal.
Adapted from InGrappling, Bicep Slicer. System Games did not invent this curriculum.
FamilyArmbarLevelAdvancedPerspectiveTopIntentOffensiveSafetyElevatedHubArmbar systemMapView on graph →This technique has elevated risk. Make sure you've covered the prerequisites before attempting.
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The bicep slicer is a compression submission that attacks the arm by trapping it against a rigid fulcrum — typically the attacker’s forearm, shin, or knee — and then forcing the arm into flexion, crushing the bicep and brachialis muscles against that fulcrum and loading the medial elbow structures. It is mechanically distinct from both the standard armbar (hyperextension) and the bent-arm elbow attacks (3/4 armbar, kimura): it attacks through compression of the muscle belly and the elbow’s resistance to forced flexion rather than through joint end-range loading alone.
The bicep slicer is accessible from a wide range of positions — mount, guard, side control, and leg entanglement positions — because the fulcrum can be any rigid body part the attacker can wedge into the crook of the opponent’s elbow. The most common forms use the forearm threaded through the elbow crook (sometimes called the “bread cutter” or “slicer” grip) or the shin wedged into the crook from a mounted or guard position.
Distinction from calf slicer: The calf slicer is the equivalent compression technique applied to the leg — the same wedge-and-compress mechanic applied to the calf and knee. Bicep slicer attacks the arm; calf slicer attacks the leg. They share the same compression principle.
Ruleset restriction: The bicep slicer is restricted in IBJJF competition at white, blue and purple belt. It is legal at brown and black belt in both gi and no-gi IBJJF contexts. Confirm current IBJJF rules before use in any IBJJF-aligned training context — the restriction applies to drilling in class at some gyms, not just competition.
Elevated RiskBicep Slicer is an elevated risk technique. The bicep slicer attacks the arm through soft tissue compression — the bicep and brachialis muscles are crushed against a hard fulcrum. Unlike joint hyperextension which typically has a progressive pain signal, muscle belly compression can cause acute tissue damage (muscle contusion, haematoma, or compression of the musculocutaneous nerve, with the median nerve exposed in the same anterior region) without proportionate warning time. The elbow is also loaded in flexion against its natural range limit. Rapid or forceful application can cause injury before the opponent has time to tap. Serious injury can occur fast — muscle compression reaches injury threshold faster than joint hyperextension; elbow flexion end-range loading adds a joint component.
If you are new to this technique: read this section before anything else. Understanding the danger is part of understanding the technique.