The YSL-891Z comes with 2 interchangeable leadpipes. the NY leadpipe is longer and was developed with Wycliffe Gordon while the LA leadpipe is shorter and was developed with Andy Martin.
A one-piece bell has an axial (lengthwise) seam, making it a continuous extension of the instrument’s material. This results in pure, uniform resonance and superior tone. A hammered yellow brass bell produces a pure and perfectly-balanced tone with quick response and extra presence due to advanced manufacturing techniques.