Bájoc Ergonomic Valve Guides (EVGs)


The Bájoc Ergonomic Valve Guide (EVG) is a uniquely designed valve guide that utilizes specially designed parts used to fit onto the modern-day trumpet piston spring barrel.  Parts include a thermoplastic piece that is fabricated using state-of-the-art 3D printing technology; a brass, nickel-plated bottom ring; and a brass, nickel-plated top ring.  The high-carbon steel valve spring fastens to the top and bottom rings which allow for minimal valve disruptions or inefficiencies that normally initiate inside the pistons’ spring barrels.  The end result is a valve guide that allows for valve action to be smooth, effortless, and yet highly sufficient in all up and down strokes of the piston.

The Bájoc EVGs were made to:

  • Eliminate valve catching issues that take place inside of the spring barrel;
  • Improve vertical and rotational valve alignment thus reducing porting and airflow disruptions; and
  • Ensure the valve is able to move freely and yet quietly* while utilizing the EVGs.

* Quietly is being used as a general term here since each player has a different approach to what “quiet” valve action sounds like.


Available Brands & Models:

  • B&S — All Challenger I/II and X-Line Series Trumpets, Cornets, and Flügelhorns (only Model 3145)
  • Bach — 170, 180, and 190 Series (Apollo, Stradivarius, Omega) Trumpets, Cornets, Piccolos and Flügelhorns
  • B.A.C. Custom — Any Artist, Handcraft, or Custom Series B.A.C. trumpet with Wuqiang Jiahua valves only
  • Bauerfeind — VanLaar & Adams Trumpets, Cornets, Piccolos (from Adams), and Flügelhorns (except Adams F5)
  • Benge (L.A. & UMI) — All trumpet, cornet, and flügelhorn models (L.A. and UMI era)
  • Besson/B&H & York (Schreiber-Keilwerth, German) — Sovereign & Prestige Series Cornets; Preference & Eminence Series Cornets [Besson/B&H: 2001–2005; York: ~2006–2010] (NEW!)
  • Besson (Buffet-Crampon, German) — Sovereign & Prestige Series Cornets and Tenor Horns [post-2011] (NEW!)
  • F.E. Olds (Old-Style) — All trumpet & cornet models with old-style valve guides (Los Angeles-era)
  • F.E. Olds (New-Style) — All trumpet & cornet models with new-style valve guides (Fullerton-era)
  • Hoxon-Gakki — CarolBrass, Eclipse, Thane (Standard Series) & similar
  • J. Meinlschmidt — Lotus, Thane (Performance Series), Böhme & similar
  • Jupiter XO — 1600I, 1602[LTR], 1604, 1624, 1700
  • Kanstul (Old-Style) — All OEM Series Trumpets, Cornets, Piccolos, and Flügelhorns (except Model 1025) with 2-slotted valve casings (Smith-Watkins, early Blackburn, and some B.A.C. included); includes new valve stems (+$10), required to properly fit EVGs to this type of Kanstul piston (NEW!)
  • Kanstul (New-Style) — All OEM Series Trumpets, Cornets, Piccolos, and Flügelhorns (except Model 1025) with 1-slotted valve casings
  • Martin — All Committee and Imperial [Deluxe, Handcraft, Standard] trumpet and cornet models (between 140,000 – 210,000)
  • Schilke — All Series Trumpets, Cornets, Piccolos, and Flügelhorns (early-make Schilkes may vary)
  • S.E. Shires — All Series Trumpets, Cornets, and Piccolos (except BRAVO Series)
  • Spiri — All Weiner Spiri & daCarbo Trumpets and Piccolos
  • Stomvi – All Series Trumpets, Cornets, Piccolos, and Flügelhorns
  • UMI – King (“Silver Flair” [2055], “Legend” (2020, 2070), 2220SP, 1117, “System Blue” Series) & C.G. Conn (“Vintage One” [1B, 1B50C, 1FR], 51B, 52B)
  • Yamaha — All Pro Series Trumpets, Cornets, and Piccolos with valve stems that have a Short base (“Old Style” and “New Style” valve stems) or Tall base (“New Style”—both solid & center-cut valve stems) valve stems
SKU: N/A Category:

Additional information

Dimensions 6 × 4 × 4 cm
Type of Valves

B&S, B.A.C. Custom, Bach, Bauerfeind, Benge, Besson (Buffet-Crampon, German), Besson/B&H & York (Schreiber-Keilwerth, German), F.E. Olds (New-Style), F.E. Olds (Old-Style), Hoxon-Gakki, J. Meinlschmidt, Jupiter XO, Kanstul (New-Style), Kanstul (Old-Style), Martin, S.E. Shires, Schilke, Spiri, Stomvi, UMI, Yamaha – Short Base, Old, Yamaha – Short Base, New, Yamaha – Tall Base, New

+1 EVG (for 4th valve)?

No, Yes (+$65.00)


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