S6A VR Flex Trumpet Mouthpiece

Rated 5.00 out of 5 based on 1 customer rating
(1 customer review)

From: $225.00

Flex Trumpet Mouthpiece

Click picture for Flex Mouthpiece Concepts

Schilke 6A Rim – Inner Diameter = .632″ (16.05 mm)
Our S6A VR Flex trumpet mouthpiece is a great choice for a player who likes a traditional 6A4a but is looking for more sound with less effort.

Players coming from a Schilke 6A4a or equivalent report our Flex S6A VR is 10-30% easier to play with better intonation and a more resonant sound.
This is due to our advanced acoustic design and Flex Alloy.

How to Choose/Order

1. Choose an Acoustic Series Click here for Series Advice
2. Choose Silver or Gold Plating
3. Choose three Flex Couplers (included with mouthpiece price)
Click here for how to choose Flex Couplers (Advice and Details)

A Flex Coupler is needed to use this mouthpiece (3 are included in price).
Contact Us with any questions you may have.
(Acoustic Series are listed in order of popularity for this mouthpiece)


Series Information

Weight 0.3 lbs
Dimensions 3 x 1 x 1 in
Series Design (Mouthpiece balance)

By developing mouthpieces as complete systems, or series, we have been able to combine the best internal shapes and sizes to maximize the performance of each mouthpiece. In this manner you are assured of a mouthpiece that has been balanced acoustically for maximum sound and ease of play.




Silver plated, Gold Plated

Flex Alloy

A proprietary brass alloy and treatment. It is extremely resonant and transfers energy very efficiently thus adding to ease of play.

S6A VR Vs Series

Speed of Sound Series which is good for Lead Trumpet, Amplified Music, and Pit Work.

S6A VR J6 Series

J6 Series which is good for Lead Trumpet, Amplified Music, and Pit Work. It has more "core" to the sound than the Vs. Some say it requires a little bit more air.

S6A VR M4G Series

Our M4G Series is the latest development in small volume cup acoustic design. It provides a huge resonant sound with an extremely easy upper register.

S6A VR 5 Series

Great all around Series. Very good for Jazz Trumpet, Brass Quintet, wedding, and Orchestral including C Trumpet.

S6A VR T2 Series

The T2 is a variation of the Vs backbore. It has either a #30 or #29 bore. This affects the very top of the backbore nearest the cup. It may allow you to use less air.

1 review for S6A VR Flex Trumpet Mouthpiece

  1. Rated 5 out of 5

    mark brueggemann

    I have only played two mouthpieces in 30 years, a Marcinkiewicz 9 and a Bobby Shew 2 which is also made by Marcinkiewicz. I sent KO an email and asked him what he would recommend I try from Stomvi. I got the s6a vr flex mouthpiece on Saturday and by Sunday I had it as my primary mouthpiece. It was an easy switch with minimal adjustment. I was able to increase my range while playing with less air which is what my goal was for this mouthpiece. I also did not lose any flexibility. I could not tell much difference on which flex coupler mattered (4, 4.5 or 5) when I played the horn. The key for my playing was that the higher notes were easier to play and I didnt have to make a major adjustment from the previous mouthpieces. This mouthpiece made it easier to play. Thanks KO

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