The product Ian Bousfield Signature Series S4 is regretfully no longer available.
Why don't you check out the Trombone Mouthpieces with Large Shank category page; or maybe you'll find a Top-Seller you enjoy.Recommended Alternatives
Ian Bousfield Virtuoso Series V3
$172
JK Exclusive Bass Trombone 03 AK
$72
Denis Wick 5880 Trombone 5AL
$71
Denis Wick 5880 Trombone 6BL
$65
Perantucci Euphonium Mouthpiece PT-7C
$80
Denis Wick 5880 Trombone 4AL
$68
Bach 341 Trombone 6-1/2AL
$79
JK Exclusive Trombone 4A S3
$71
Bach 341 Trombone 1-1/2G
$90
Kühnl & Hoyer 7.6 D Bass Trombone
$56