AR Resonance Backbore 40 M Bronze Bb-Trp.

Mouthpiece Backbore for Bb Trumpet

Bore: 4.0 mm (40)
Backbore: medium
Weight: L (light = standard)
Material: Bronze
Silver-plated
Made in Italy

30-Day Money-Back Guarantee

3-Year Thomann Warranty

Available since February 2024
Item number 584750
Sales Unit 1 piece(s)
Cup Depth Backbore
Cup Diameter 0 mm
Finish Silver Plated

£105

All prices incl. VAT

194

Sales Rank

in Trumpet Mouthpieces

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2 Customer ratings

5 2 Customers 4 0 Customers 3 0 Customers 2 0 Customers 1 0 Customers

5 / 5

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1 Review

Jamf 17.02.2026

I bought this Ar resonance backbone 40 M bronze mouthpiece bottom to add to a 40 XS brass mouthpiece bottom and M lead and MC tops I already own, to give me more versatility in my setup. The XS backbore despite the name is similar to a standard backbore found in for example most Bach and Yamaha mouthpieces . The M lead with the XS backbore is my go to lead mouthpiece, with the MC cup I get a bigger sound, but I wanted to push it further and the M bronze backbore with the MC cup is perfect for playing in most situations. The bronze gives a very vibrant and resonant tone, response is faster, you can feel all the slots more securely I highly recommend these mouthpieces in whatever combination you might choose.

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AR Resonance Backbore 40 M Bronze Bb-Trp.

Mouthpiece Backbore for Bb Trumpet

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AR Resonance Backbore 40 M Bronze Bb-Trp.

Mouthpiece Backbore for Bb Trumpet

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