Precision. Power. Perfection.
Elevate your performance with JK Exclusive Flugelhorn Mouthpieces — the choice of discerning brass musicians worldwide. Crafted in Germany with uncompromising attention to detail, JK mouthpieces deliver an exceptional blend of tonal clarity, projection, and comfort.
Whether you're performing in a symphony orchestra, jazz ensemble, or solo setting, the JK Exclusive Series offers a wide range of cup depths, diameters, and rim shapes to suit every playing style and skill level.
Why Choose JK Exclusive?
🎺 Unmatched Craftsmanship – CNC-machined for precision and consistency
🎺 Superior Comfort – Thoughtfully designed rims for optimal endurance
🎺 Rich, Resonant Tone – Balanced response across all registers
🎺 Wide Selection – Tailored options for classical, jazz, and commercial players
Join the growing community of professionals and educators who trust JK to bring out the best in their playing.
| No. | rim mm Ø | cup mm Ø | very deep | deep | medium deep | medium | medium shallow | shallow |
| bore mm | ||||||||
| 4.2 | 4.0 | 3.8 | 3.6 | 3.6 | 3.6 | |||
| FI 1 | 28.0 | 17.6 | 1A | 1B | 1C | 1D | 1E | 1F |
| FI 2 | 27.8 | 17.4 | 2A | 2B | 2C | 2D | 2E | 2F |
| FI 3 | 27.6 | 17.2 | 3A | 3B | 3C | 3D | 3E | 3F |
| FI 4 | 27.4 | 17.0 | 4A | 4B | 4C | 4D | 4E | 4F |
| FI 5 | 27.2 | 16.8 | 5A | 5B | 5C | 5D | 5E | 5F |
| FI 6 | 27.3 | 16.6 | 6A | 6B | 6C | 6D | 6E | 6F |
| FI 7 | 27.1 | 16.5 | 7A | 7B | 7C | 7D | 7E | 7F |
| FI 8 | 26.9 | 16.4 | 8A | 8B | 8C | 8D | 8E | 8F |
| FI 9 | 27.0 | 16.2 | 9A | 9B | 9C | 9D | 9E | 9F |
| FI 10 | 27.2 | 16.0 | 10A | 10B | 10C | 10D | 10E | 10F |
Precision. Power. Perfection.
Elevate your performance with JK Exclusive Flugelhorn Mouthpieces — the choice of discerning brass musicians worldwide. Crafted in Germany with uncompromising attention to detail, JK mouthpieces deliver an exceptional blend of tonal clarity, projection, and comfort.
Whether you're performing in a symphony orchestra, jazz ensemble, or solo setting, the JK Exclusive Series offers a wide range of cup depths, diameters, and rim shapes to suit every playing style and skill level.
Why Choose JK Exclusive?
🎺 Unmatched Craftsmanship – CNC-machined for precision and consistency
🎺 Superior Comfort – Thoughtfully designed rims for optimal endurance
🎺 Rich, Resonant Tone – Balanced response across all registers
🎺 Wide Selection – Tailored options for classical, jazz, and commercial players
Join the growing community of professionals and educators who trust JK to bring out the best in their playing.
| No. | rim mm Ø | cup mm Ø | very deep | deep | medium deep | medium | medium shallow | shallow |
| bore mm | ||||||||
| 4.2 | 4.0 | 3.8 | 3.6 | 3.6 | 3.6 | |||
| FI 1 | 28.0 | 17.6 | 1A | 1B | 1C | 1D | 1E | 1F |
| FI 2 | 27.8 | 17.4 | 2A | 2B | 2C | 2D | 2E | 2F |
| FI 3 | 27.6 | 17.2 | 3A | 3B | 3C | 3D | 3E | 3F |
| FI 4 | 27.4 | 17.0 | 4A | 4B | 4C | 4D | 4E | 4F |
| FI 5 | 27.2 | 16.8 | 5A | 5B | 5C | 5D | 5E | 5F |
| FI 6 | 27.3 | 16.6 | 6A | 6B | 6C | 6D | 6E | 6F |
| FI 7 | 27.1 | 16.5 | 7A | 7B | 7C | 7D | 7E | 7F |
| FI 8 | 26.9 | 16.4 | 8A | 8B | 8C | 8D | 8E | 8F |
| FI 9 | 27.0 | 16.2 | 9A | 9B | 9C | 9D | 9E | 9F |
| FI 10 | 27.2 | 16.0 | 10A | 10B | 10C | 10D | 10E | 10F |