Josef Klier - "Exclusive" Series Trumpet Mouthpieces

What if you don't see the "Add to Cart" button? That means the variant of the item (e.g. size, colour, etc.) is out of stock at the moment. Solution? Simple!

Just click on "Pre-Order" to pre-order it from us. Please refer to the "Pre-Orders" section under our "Terms & Conditions of Sales"

Options/Customisations available

  • Perspex
  • Plastic rim, silver body
  • Silver plated rim, perspex body
  • Gold plated rim, perspex body
  • Plastic rim, perspex body
  • Backbore
    • A1: Small, narrow
    • A2: Average
    • A3: Big, wide

Model table
Bore: 3.7mm


1 28 17.6 1A 1B 1C 1D 1E 1F
2 27.8 17.4 2A 2B 2C 2D 2E 2F
3 27.6 17.2 3A 3B 3C 3D 3E 3F
4 27.4 17 4A 4B 4C 4D 4E 4F 4G
5 27.2 16.8 5A 5B 5C 5D 5E 5F 5G
6 27.3 16.6 6A 6B 6C 6D 6E 6F 6G
7 27.1 16.5 7A 7B 7C 7D 7E 7F 7G
8 26.9 16.4 8A 8B 8C 8D 8E 8F 8G
9 27 16.2 9A 9B 9C 9D 9E 9F 9G
10 27.2 16 10A 10B 10C 10D 10E 10F 10G

About the JK Exclusive Series

Many producers of mouthpieces use model designations, which provide only insufficient information about cup diameter, cup depth and rim contour. At an early stage, Roland Klier noticed the disadvantages of these model designations which resulted for the brass player looking for a mouthpiece.

In 1964, along with the Exclusive Line, he drafted a logical and easy-to-understand system of designation, which enabled the player to recognize all relevant data from the model number at first glance. In addition, he develops a revolutionary concept of combining cup, bore and back bore, allowing the usage of Klier mouthpieces in every musical style.

The exceptionally large selection that the Exclusive Line offered provided every brass player the possibility to find his personal mouthpiece. Moreover, the rim contours of trumpet, cornet and flugelhorn mouthpieces with the same cup diameter are identical. This allows the player to quickly switch without any difficulty.The unique outer shape of the Exclusive series is the result of numerous tests which had the aim of elaborating the optimum weight of the mouthpiece. It has established itself as a distinctive feature of the JK Exclusive series. The Exclusive Export Line is an enhancement of the Exclusive series. The rim diameter and shape are identical to those of the Exclusive series, allowing hassle-free switching between the series.

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