1 GW Helios Trumpet Mouthpiece Rim Diameter 17.29mm, .681 inches

Experience superior efficiency and power with our premium stainless steel mouthpiece, built on the classic Bach 1 inner rim diameter (.671" / 17.04mm). Crafted from high-performance stainless steel, this mouthpiece transfers your buzz into the instrument with exceptional energy and immediacy — delivering more projection, clarity, and raw power compared to traditional brass. The material's density and responsiveness give your sound incredible focus and intensity, helping advanced players with strong embouchure and air support achieve a commanding, vibrant tone that cuts through any ensemble. Available in three versatile cup depths and backbores.

• Medium Cup — Our top recommendation and the most balanced choice for the majority of your playing. It offers excellent all-around versatility, blending rich core tone with responsive articulation and flexibility across styles, registers, and dynamics. Available with our #27 traditional backbore and #25 High output backbore.
• Deep Cup — Ideal for large ensembles, orchestral work, or symphonic settings where you need maximum breadth, depth, and foundational core in your sound — producing a massive, warm, resonant tone with outstanding volume. Available with our #27 traditional backbore and #25 High output backbore.
• Medium Deep Cup – The Powerhouse. Built on the classic Bach 1 inner rim diameter (.681" / 17.29mm), this stainless steel mouthpiece combines a generously deep cup with massive volume and an expansive, exclusively with our large #24 backbore — engineered specifically for orchestral trumpeters and large ensemble players who demand uncompromising depth, breadth, and commanding presence.

Perfect for advanced trumpeters who demand efficiency, durability, and tonal authority from their equipment. Elevate your sound — play with more power, precision, and musical confidence. Built on the classic Bach 1 inner rim diameter (.681" / 17.29mm)