S13A VR Flex Trumpet Mouthpiece

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

From: $225.00


Click picture for Flex Mouthpiece Concepts

Schilke 13A Rim – Inner Diameter = .640″ (16.26 mm)
Our S13A VR Flex trumpet mouthpiece is a great choice for a player who likes a traditional S13A4a but is looking for more sound with less effort.

Players coming from a Schilke 13A4a or equivalent report our Flex S13A 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.

S13A VR Vs Series

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

S13A 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.

S13A 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.

S13A VR 5 Series

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

S13A VR T2 Series

The T2 is a variation of the Vs Series. 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 S13A VR Flex Trumpet Mouthpiece

  1. Rated 5 out of 5

    Gerry Maffeo (verified owner)

    I have been searching for perfection for forever. I played a Giardinelli NY 6 shallow through college. Dozens of mouthpieces later. I found Stomvi. I was immediately impressed with their approach. One phone call with KO and my s13A was on the way here. It is the most comfortable piece I have ever put on my face. The outside diameter looks smaller than my dozens of medium wide flat rims with similar Inside diameters, but the engineering on the rim somehow makes it more comfortable. It is a high compression lead design but plays to low f easily and pedal tones roll out easily. Articulation is great and upstairs is effortless and thoughtless whilst remaining in tune. Ill be selling a bunch of mouthpieces in the very near future. Thanks KO for your genius!! Ill be saving my pennies for a VR2 lightweight.

Add a review

Your email address will not be published. Required fields are marked *