Kin Geri. Karate for MMA. Episode 2. The first kick you should learn.
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Kin Geri·NeroMMA
Kin Geri tutorial! This is the first kick you learn as a whitebelt, and there is a reason for it! So enjoy the first tu…
Kin Geri
SubFamily金蹴り(Kin Geri)
TraditionalTranslation: groin kick
Overview
Kin Geri is the dedicated groin kick in karate — a rising snap kick targeting specifically the groin using the instep or ball of the foot. [1] While any front kick can target the groin, Kin Geri is trained specifically for this target with the appropriate trajectory (steeply upward between the legs) and striking surface (instep sweeps upward into the groin). [1] It is one of the most effective self-defense techniques but is illegal in most sport competitions. [1]
Kin-GeriJPGroin KickKinteki GeriJPGolden Kick
History & Origin
Kin Geri is one of the fundamental self-defense kicks in all Japanese martial arts, dating back to classical jujutsu. [1] The character 金 (kin/golden) is a euphemism for the groin area in Japanese martial arts terminology. It appears in nearly every self-defense curriculum across karate, jujutsu, and aikido. [1]
Effectiveness
One of the most immediately incapacitating strikes in martial arts — a clean kin geri can end a confrontation instantly. [1] However, it is banned in virtually all sport competitions (WKF, WTF, IBJJF, boxing). In self-defense and military combatives, it remains one of the first techniques taught due to its effectiveness regardless of size difference. [1]
Competition Record
Primarily a training, demonstration, and point-fighting technique. Rarely seen in full-contact MMA or kickboxing due to acrobatic risk and telegraphing. Appears occasionally in TKD and point-fighting karate tournaments. [1]
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Biomechanical Mechanism
Primary Action — Steeply rising snap kick driven upward between the opponent's legs into the groin
Joints Involved — Hip flexion (steep upward angle), knee snap, ankle extension (instep contact)
Force Vector — Steeply upward — almost vertical at the moment of impact
Striking Surface — Instep (haisoku) sweeping upward
Position & Entry
From fighting stance — Snap the foot steeply upward between the opponent's legs
From close range — Short-range snap directly to the groin from clinch distance
Variants
Long range kin geri — stepping kick to the groin
Short range kin geri — snap from close range
Knee kin geri — using the knee instead of foot for very close range
Videos
1 video
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Ratings
Risk of injury to the person this technique is applied to
8
Very High8/10
Can cause testicular rupture, vomiting, loss of consciousness. One of the most effective self-defense strikes.
Skill level needed to execute this technique reliably
Beginner
Whether this technique is allowed under major competition rule sets
Illegal
WKF Karate— groin strikes prohibited
WKF Kumite Rules 2026PDFMost competitions— groin strikes illegal
Legal
KyokushinSelf-Defense
Training Notes
✓The trajectory must be STEEPLY upward — not horizontal
✓The instep sweeps UP through the target — don't just kick AT it
✓This is a self-defense technique — banned in most competitions
✓Practice on a hanging target at groin height
✓The kick should be fast and retracting — a committed kick misses if the opponent moves
Common Mistakes
!Horizontal trajectory — the kick goes between the legs but doesn't rise into the target
!Using the toes — broken toes; use the instep
!Telegraphing — the steep angle requires setup or surprise
!Over-committing — if you miss, you're off-balance with a leg between their legs
Related Techniques
Counter Techniques
Setup Chain
1Eye poke or face strike → opponent flinches → immediate kin geri
2Grab and pull → opponent bends forward → kin geri from below
3Feint high → opponent raises guard → kin geri underneath
Sources & References
Primary Source
Oyama, M. This Is Karate / Essentials of Karate.
1BookFunakoshi, G. Karate-Do Kyohan.
2BookOyama, M. This Is Karate / Essentials of Karate.
[1] Oyama / Funakoshi, Karate technique manuals
Official karate technique names (和語/漢語)
4OtherJapanese Martial Arts Standard Terminology (武道用語)
Established Japanese martial arts naming convention — native Japanese term (和語/漢語)
5CitationOyama, M. This Is Karate / Essentials of Karate.
[1] Oyama / Funakoshi, Karate technique manuals
6CitationFunakoshi, G. Karate-Do Kyohan.
Community
Athletics
Requires
accuracy to hit the target between the legs, fast snap
Key muscles
hip flexors, quadriceps, tibialis anterior
Notes
Kin geri (groin kick) targets the groin with the instep in a snapping upward motion. One of the most effective self-defense techniques — causes immediate incapacitation. Banned in all sport competition. (Nakayama, Dynamic Karate; Oyama, This Is Karate)
Frequently Asked Questions
Why should I practice Kin Geri on both sides before moving to other kicks?
You want to master the technique on both sides before progressing to other kicks, as this foundational skill is essential for developing proper karate-style kicking ability. According to NeroMMA, this forms the basis for kicking in Kyokushin karate, Taekwondo, and other karate styles.
What's the proper sequence for executing a Kin Geri kick?
The key sequence is: bring the knee up, snap the kick out, bring it back, and always return to position to throw the next punch or kick. NeroMMA emphasizes that maintaining balance throughout this sequence is the most important thing.
How much time should I dedicate to drilling Kin Geri?
NeroMMA recommends practicing Kin Geri drills as part of your warm-up or cool-down, or at home—dedicating significant time without rushing the process, as proper technique takes time to develop correctly.
Why is the chamber position so important in Kin Geri?
The chamber is the most important part in Kyokushin karate, according to NeroMMA, as it forms the foundation for all subsequent kicking techniques.
How does the Kin Geri work?
Kin Geri is the dedicated groin kick in karate — a rising snap kick targeting specifically the groin using the instep or ball of the foot. While any front kick can target the groin, Kin Geri is trained specifically for this target with the appropriate trajectory (steeply upward between the legs) and striking surface (instep sweeps upward into the groin).
Where does the Kin Geri come from?
Kin Geri is one of the fundamental self-defense kicks in all Japanese martial arts, dating back to classical jujutsu. The character 金 (kin/golden) is a euphemism for the groin area in Japanese martial arts terminology.
Is the Kin Geri legal in competition?
WKF Karate: Banned: banned — groin strikes prohibited; Most competitions: Banned: banned — groin strikes illegal; Kyokushin: Legal: legal — groin protection required; Self: legal — Defense: Legal — primary self-defense target
How dangerous is the Kin Geri?
Danger rating 8/10. Very High — can cause testicular rupture, vomiting, loss of consciousness. One of the most effective self-defense strikes.
How do I set up the Kin Geri?
The standard setup chain: Eye poke or face strike → opponent flinches → immediate kin geri → Grab and pull → opponent bends forward → kin geri from below → Feint high → opponent raises guard → kin geri underneath.
How do I defend against the Kin Geri?
Standard counters include: Turn sideways — present a smaller target / Lower the hand — palm block the rising kick / Step back — create distance.
What are the variants of the Kin Geri?
Common variants: Long range kin geri (stepping kick to the groin); Short range kin geri (snap from close range); Knee kin geri (using the knee instead of foot for very close range).
How effective is the Kin Geri in competition?
Primarily a training, demonstration, and point-fighting technique. Rarely seen in full-contact MMA or kickboxing due to acrobatic risk and telegraphing.
What are common mistakes when doing the Kin Geri?
Top errors to watch for: Horizontal trajectory — the kick goes between the legs but doesn't rise into the target / Using the toes — broken toes; use the instep / Telegraphing — the steep angle requires setup or surprise / Over-committing — if you miss, you're off-balance with a leg between their legs.
What are other names for the Kin Geri?
The Kin Geri is also known as Kin Geri, Kin-Geri, Groin Kick, Kinteki Geri, Golden Kick.