Trumpet | Flugelhorn | Cornet

Abbreviation Trumpet, Flugelhorn und Cornet – Explanation

Instrument Example Series Category
(optional)		 Cup mm Ø Cup depth Shank
(optional)		 Back bore Designation
Trumpet:
Abbreviation TR		 No. 5C Exclusive BigBand, Piccolo, Classic 5 C A1, A2 or A3 JK Exclusive Classic 5C A2
Trumpet:
Abbreviation TR		 No. 1 ½ USA 1 ½ C JK 1 ½C
Flugelhorn:
Abbreviation FL		 No. 5C Exclusive Export 5 C German, American or Yamaha-Shank A1 or A2 JK Exclusive FL 5C A2
Flugelhorn:
Abbreviation FL		 No. 1 ½ USA 1 ½ C German, American or Yamaha-Shank
JK FL 1 ½C
Cornet:
Abbreviation C		 No. 5C Exclusive Export 5 C
A1 or A2 JK Exclusive C 5C A2
Cornet:
Abbreviation C		 No. 1 ½ USA 1 ½ C
JK C 1 ½C

Further deviations of the mouthpieces must be indicated separately, e.g. bore 3.8mm.
If no shaft size is specified, the standard is used.
The cup depth also determines the size of the hole in some instruments.

JK Trumpet

Choose your suitable mouthpiece using the table below.
If you have any questions, please contact us.

Trumpet

Trumpet "Exclusive" – bore 3.7 mm

No. rim mm Ø cup mm Ø very deep deep medium shallow very shallow extremely shallow ultra shallow
1 28.0 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 17.0 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 27.0 16.2 9A 9B 9C 9D 9E 9F 9G
10 27.2 16.0 10A 10B 10C 10D 10E 10F 10G

Standard: Optional:
silver plated gold plated
back bore A2 bottom part silver plated with plastic rim
bottom part silver plated with metal rim
perspex
back bore A1 or A3

Trumpet-Big Band "Exclusive" – bore 3.6 mm

No. rim mm Ø cup mm Ø shallow very shallow extremely shallow ultra shallow
3 27.6 17.2 3DB 3EB 3FB 3GB
4 27.4 17.0 4DB 4EB 4FB 4GB
5 27.2 16.8 5DB 5EB 5FB 5GB
6 27.3 16.6 6DB 6EB 6FB 6GB
7 27.1 16.5 7DB 7EB 7FB 7GB
8 26.9 16.4 8DB 8EB 8FB 8GB
9 27.0 16.2 9DB 9EB 9FB 9GB
10 27.2 16.0 10DB 10EB 10FB 10GB

Standard: Optional:
silver plated gold plated
back bore A1 bottom part silver plated with plastic rim
bottom part silver plated with metal rim
perspex

back bore A2

Trumpet Exclusive Lead - bore 3.6 mm

No. rim mm Ø cup mm Ø Lead – very shallow Lead – extremely shallow
5 27,20 16,80 5R 5S
6 27,30 16,60 6R 6S
7 27,10 16,50 7R 7S
8 26,90 16,40 8R 8S
9 27,00 16,20 9R 9S
10 27,20 16,00 10R 10S

Standard: Optional:
silver plated gold plated
back bore L1 bottom part silver plated with plastic rim

bottom part silver plated with metal rim

Trumpet Exclusive Lead

Trumpet-Piccolo "Exclusive" – bore 3.8 mm

No. rim mm Ø cup mm Ø very shallow extremely shallow ultra shallow
3 27.6 17.2 3EP 3FP 3GP
4 27.4 17.0 4EP 4FP 4GP
5 27.2 16.8 5EP 5FP 5GP
6 27.3 16.6 6EP 6FP 6GP
7 27.1 16.5 7EP 7FP 7GP
8 26.9 16.4 8EP 8FP 8GP
9 27.0 16.2 9EP 9FP 9GP
10 27.2 16.0 10EP 10FP 10GP

Standard: Optional:
silver plated gold plated
back bore A1 bottom part silver plated with plastic rim
trumpet shank bottom part silver plated with metal rim
perspex
back bore A2
cornet shank

Trumpet-Classic "Exclusive" – bore 3.8 mm

No. rim mm Ø cup mm Ø medium shallow
1 28.0 17.6 1C 1D
2 27.8 17.4 2C 2D
3 27.6 17.2 3C 3D
4 27.4 17.0 4C 4D
5 27.2 16.8 5C 5D
6 27.3 16.6 6C 6D
7 27.1 16.5 7C 7D
8 26.9 16.4 8C 8D

Standard: Optional:
silver plated gold plated
back bore A2 bottom part silver plated with plastic rim

bottom part silver plated with metal rim
perspex
back bore A1

JK „Classic“ trumpet mouthpieces are an extension to the Exclusive Series. According to the today's sound expectations in classical music, these models are offering a deeper volume in combination with a much focused sound. The rim and cup diameters as well as the rim shape are identical to the JK Exclusive models. This enables the player to the switch easily between both mouthpiece lines.

Trumpet "USA"

Bore 3.6 mm, also available in 3.8 mm.

No. 1 1 C 1 ¼ C
 1 ½ C
 1 ½ D
 1 ½ E
 2 C 2 ½ C
 3
rim mm Ø 27.4 27.4 27.5 27.3 27.3 27.3 26.8 26.8 27.2
cup mm Ø 17.0 17.0 16.8 16.8 16.8 16.8 16.8 16.7 16.6
No. 3 C 3 D 3 E 5 A 5 B 5 C 6 6 C 7
rim mm Ø 27.3 27.3 27.3 26.7 27.0 27.1 27.0 27.1 27.0
cup mm Ø 16.6 16.6 16.6 16.5 16.5 16.5 16.4 16.4 16.4
No. 7 A 7 B 7 BW 7 C 7 CW 7 D 7 DW 7 E 7 EW
rim mm Ø 27.1 27.1 28.2 26.9 28.0 27.0 28.0 27.3 28.0
cup mm Ø 16.4 16.4 16.4 16.4 16.4 16.4 16.4 16.4 16.4
No. 10 ½ C
 10 ½ CW
 10 ½ D
 10 ½ DW
 10 ½ E


rim mm Ø 27.2 30.0 27.0 27.8 27.0
cup mm Ø 16.0 16.0 16.0 16.0 16.0

Standard: Optional:
silver plated gold plated

bottom part silver plated with plastic rim
bottom part silver plated with metal rim
perspex

Trumpet „USA“

JK Flugelhorn

Flugelhorn "Exclusive"

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

Standard: Optional:
silver plated gold plated
German shank: 10.0 mm bottom part silver plated with plastic rim
back bore A2 bottom part silver plated with metal rim
perspex
American shank: 9.3 mm
Yamaha shank: 9.6 mm
back bore A1

Flugelhorn „Exclusive“

Flugelhorn "Export-Line Exclusive"

No. rim mm Ø cup mm Ø extremely deep very deep



bore mm



4.4 4.2
EFL 3 27.6 17.2 3A 3B
EFL 4 27.4 17.0 4A 4B
EFL 5 27.2 16.8 5A 5B
EFL 6 27.3 16.6 6A 6B
EFL 7 27.1 16.5 7A 7B
EFL 8 26.9 16.4 8A 8B

Standard: Optional:
silver plated gold plated
German shank: 10.0 mm bottom part silver plated with plastic rim
back bore A1 bottom part silver plated with metal rim

perspex
American shank: 9.3 mm
Yamaha shank: 9.6 mm

Flugelhorn "USA Line" – bore 3.8 mm

No. 1 1 C 1 ¼ C
 1 ½ C
 3 C
rim mm Ø 27.4 27.4 27.5 27.3 27.3
cup mm Ø 17.0 17.0 16.8 16.8 16.6
No. 5 C 6 C 7 C 7 E 7 EW
rim mm Ø 27.1 27.2 26.9 27.4 28.0
cup mm Ø 16.5 16.4 16.4 16.4 16.4

Standard: Optional:
silver plated silver gold
German shank: 10.0 mm bottom part silver plated with plastic rim

perspex
American shank: 9.3 mm
Yamaha shank: 9.6 mm

Flugelhorn „USA Line“ – bore 3.8 mm

Flugelhorn/Trumpet Piccolo "Exclusive" Franz Troester

No. rim mm Ø cup mm Ø




bore mm length mm



3.8 mm
5 FL 27.2 16.8 FL5HFT 80 mm
5 TRP 27.2 16.8 TRP5HPFT 80 mm

Standard: Optional:
silver plated gold plated

bottom part silver plated with plastic rim
bottom part silver plated with metal rim

perspex

JK Cornet

Cornet "Exclusive"

No. rim mm Ø cup mm Ø very deep deep medium shallow



bore mm





4.2 4.0 3.8 3.6
C 1 28.0 17.6 1A 1B 1C 1D
C 2 27.8 17.4 2A 2B 2C 2D
C 3 27.6 17.2 3A 3B 3C 3D
C 4 27.4 17.0 4A 4B 4C 4D
C 5 27.2 16.8 5A 5B 5C 5D
C 6 27.3 16.6 6A 6B 6C 6D
C 7 27.1 16.5 7A 7B 7C 7D
C 8 26.9 16,4 8A 8B 8C 8D
C 9 27.0 16.2 9A 9B 9C 9D
C 10 27.2 16.0 10A 10B 10C 10D

Standard: Optional:
silver plated gold plated
back bore A2 bottom part silver plated with plastic or metal rim
perspex
back bore A1

cornet „Exclusive“

Cornet "Export-Line Exclusive"

No. rim mm Ø cup mm Ø very deep deep



bore mm



4.4 4.2
EC 3 27.6 17.2 3A 3B
EC 4 27.4 17.0 4A 4B
EC 5 27.2 16.8 5A 5B
EC 6 27.3 16.6 6A 6B
EC 7 27.1 16.5 7A 7B
EC 8 26.9 16.4 8A 8B

Standard: Optional:
silver plated gold plated
back bore A1 bottom part silver plated with plastic or metal rim
perspex

Cornet "USA Line"

Bore 3.6 mm, also available in 3.8 mm.

No. 1 1 C 1 ¼ C
 1 ½ C
 1 ½ D
 1 ½ E
 2 C 2 ½ C
 3
rim mm Ø 27.4 27.4 27.5 27.3 27.3 27.3 26.8 26.8 27.2
cup mm Ø 17.0 17.0 16.8 16.8 16.8 16.8 16.7 16.7 16.6
No. 3 C 3 D 3 E 5 A 5 B 5 C 6 6 C 7
rim mm Ø 27.3 27.3 27.3 26.7 27.0 27.1 27.0 27.1 27.0
cup mm Ø 16.6 16.6 16.6 16.5 16.5 16.5 16.4 16.4 16.4
No. 7 A 7 B 7 BW 7 C 7 CW 7 D 7 DW 7 E 7 EW
rim mm Ø 27.1 27.1 28.2 26.9 28.0 27.0 28.0 27.3 27.8
cup mm Ø 16.4 16.4 16.4 16.4 16.4 16.4 16.4 16.4 16.4
No. 10 ½ C
 10 ½ CW
 10 ½ D
 10 ½ DW
 10 ½ E


rim mm Ø 27.2 30.0 27.0 27.8 27.0
cup mm Ø 16.0 16.0 16.0 16.0 16.0

Standard: Optional:
silver plated gold plated

bottom part silver plated with plastic rim
perspex

cornet USA line
Exclusive mouthpieces with screw rim

Each mouthpiece of the JK-Exclusive trumpet, flugelhorn and cornet series also can be bought as bottom part and screw-on rim. All screw-on rims can be delivered as silver plated brass, high gloss gold plated or as white plastic, e.g. to give allergic costumers an alternative or to make possible comfortable playing in winter.

The rim contours -1, -2, -3, -4 and -N are transferable to all diameters of the Exclusive series.
For instance, the bottom part 5C can be matched with the rims 5-1, 5-2, 5-3 etc. Each screw-on variant can be manufactured as one-piece mouthpiece too.

Example

Schraubränder

Trombone screw rims

Posaune Schraubränder

Beside the standard rim, for the JK-Exclusive trombone mouthpiece series as standard we offer three different screw-on rims per cup diameter which fit all to the bottom part of the respective series number. All screw-on rims can be delivered as silver-plated brass, high gloss gold plated or as white plastic.

Cologne models Mouthpieces
cologne models mouthpieces

Cologne model Cornet

No. rim mm Ø cup mm Ø cup depth bore mm
203-1 28 16.2 shallow 3.2
203-2 28 16.4 medium 3.4
203-3 28 16.6 deep 3.6
203-4 28 16.8 very deep 3.8

Standard: Optional:
silver plated gold plated

bottom part silver plated with plastic rim
perspex

Cologne model Flugelhorn

No. rim mm Ø cup mm Ø cup depth bore mm
204-1 28 16.2 shallow 3.2
204-2 28 16.4 medium 3.4
204-3 28 16.6 deep 3.6
204-4 28 16.8 very deep 3.8

Standard: Optional:
silver plated gold plated

bottom part silver plated with plastic rim
perspex

Cologne model Jazz Trumpet

No. rim mm Ø cup mm Ø cup depth bore mm
205-1 28 16.0 very shallow 3.2
205-2 28 16.2 shallow 3.4
205-3 28 16.4 medium 3.6
205-4 28 16.6 deep 3.8

Standard: Optional:
silver plated gold plated

bottom part silver plated with plastic rim
perspex

Cologne model Rotary Trumpet

No. rim mm Ø cup mm Ø cup depth bore mm
207-1 28 16.6 deep 3.8
207-2 28 16.8 deep 3.8
207-3 28 17.0 deep 3.8
207-4 28 17.2 deep 3.8

Standard: Optional:
silver plated gold plated

bottom part silver plated with plastic rim
perspex

Cologne model Trumpet, Fanfare

No. rim mm Ø cup mm Ø cup depth bore mm
208-1 28 16.4 very shallow 3.4
208-2 28 16.6 shallow 3.6
208-3 28 16.8 medium 3.8
208-4 28 17.0 deep 4.0

Standard: Optional:
silver plated gold plated

bottom part silver plated with plastic rim
perspex

Mouthpieces / Trumpet, Flugelhorn & Cornet

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