Klier Flugelhorn Mouthpiece Exclusive 5FL Franz Tröster

Franz Tröster’s JK Signature Mouthpiece for Flugelhorn!
  • Silver-plated JK mouthpiece from the Exclusive series
  • Bore size: 3.8 mm
  • Rim diameter: 27.2 mm
  • Cup diameter: 16.8 mm
  • Cup shape: Ultra shallow
  • Shank size: 10.0 mm
92
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Delivery time 1 - 2 working days
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+ 0,99
Shipping on 20.05.2026
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+ 5,90
Delivery on Thursday, 21.05.2026, if you order within  1 Hrs. 23 Min. 
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The Top Mouthpiece from Klier for the Egerländer Sound!

JK Exclusive mouthpieces stand out with great tonal volume, pure tuning, easy response, and precisely calculated resistance in cup design and backbore, ensuring the player excellent endurance.

The personal sound concepts and wishes of a professional musician like Franz Tröster can only be fulfilled with the highest technical precision. That’s why Klier in Diespeck, Middle Franconia, uses computer-controlled CNC lathes to manufacture their JK mouthpieces. Only this production method allows the necessary serial accuracy with tolerances in the micrometer range (thousandths of a millimeter) thanks to its high positioning precision.

Unique in the Mouthpiece Sector

The consistent embouchure and cup diameter of each series, along with the exact and differentiated gradation, allow the musician to achieve any desired style without having to adjust their embouchure. A mouthpiece series with such precise and optimal craftsmanship cannot be found in any other mouthpiece offering.

"A Guarantee for Lots of Fun and Success on Stage!"

The verdict of professional flugelhorn player Franz Tröster is clear: "This is it! A guarantee for lots of fun and success on stage! I’ve been playing JK mouthpieces for a long time. But with this new flugelhorn model JK Exclusive 5H F.T., I’m overjoyed. It helps me realize my musical ideas. It has an easy response, a full, soft, balanced tone across the entire range—basically everything you expect from a very good flugelhorn mouthpiece."

About Franz Tröster

Franz Tröster, born in 1962, started playing trumpet at age 10, attended a music high school in Timi?oara, and studied at the Music Academy in Cluj-Napoca (Romania). He was a solo trumpeter and sought-after guest musician for numerous renowned orchestras. Since 1990, Franz Tröster has regularly performed in major musical productions in Stuttgart. Highlights of his career include a trumpet & organ concert in Castelanza/Milan and a concert at Carnegie Hall in New York.

Since 1990, Franz Tröster has been the principal flugelhorn player with "Ernst Mosch & his Original Egerländer Musicians" and "Ernst Hutter and the Egerländer Musicians - The Original."

Highest Quality from Master Craftsmanship

The family business originated in Graslitz in the Sudetenland, the city considered the cradle of musical instrument making. This is where the development of the entire industry began. As early as 1669, 12 violin makers worked in Graslitz. By the outbreak of World War II, 300 companies employed a total of 3,000 trained musical instrument makers.

Mouthpieces by Josef Klier - A Sound Beginning!

Features

  • Josef Klier Flugelhorn Mouthpiece
  • JK Exclusive Series
  • Signature Model "Exclusive" 5FL Franz Tröster
  • Bore size: 3.8 mm
  • Rim diameter: 27.2 mm
  • Cup diameter: 16.8 mm
  • Cup shape: Ultra shallow
  • Shank size: 10.0 mm
  • Mouthpiece length: 80 mm
  • Silver-plated

Scope of delivery

  • 1 x Klier Flugelhorn Mouthpiece Exclusive FL5HFT Franz Tröster

Specification

  • Product number 00073133
  • Instrument Flugelhorn
  • Shaft Flugelhorn (10,0 mm)
  • Cup diameter 16,8
  • Cup depth Very flat
  • Colour Silver

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