Home > Mouthpiece Components > GR Rims
Standard GR Rim
  • The Standard GR Rim is composed of medium characteristics.
  • This rim is comfortable and is generally easy for most players to adapt to quickly.
  • The width may feel a bit more generous than traditional rims and will aid endurance.
  • Flexibility is good and articulations will be cleanly defined.
  • This is our most popular rim choice and "blind" tests have proven that it is favoured over many conventional rims.
  • Standard Rims have no designation on the mouthpiece itself.


e Rim
  • The GR e - Rim is made for those that require a wider feel and less bite.
  • This rim is ideal for players that require good endurance; furthermore, it is great for downsizing giving the player the same OD yet smaller ID.
  • The bite is medium soft and contour is semi-flat.
  • E Rims have an "e" designation on the mouthpiece.
  • This rim is standard on the e62 and e65 Series Mouthpieces and is available on other models as a special order.
  • Note * If a rim is too flat or too wide it will impinge lip vibration and cause a thin sound on certain players. On the other hand many players can benefit from added support with this type of rim.


G Rim
  • The GR G Rim was originally designed by Gary Radtke for his own use but with it's popularity, we decided to add it to our line.
  • The G Rim has the same bite contour as our Standard rim but the rim is slightly wider and outside radius is slightly larger.
  • This gives the player more effective rim area on the chops as mouthpiece pressure is applied.
  • It aids in the distribution of pressure over a larger lip surface which will give support and aid endurance.
  • This rim does not feel overly wide and flexibilities will not be compromised.
  • The G Rim will have a "G" designation on the mouthpiece.
  • This rim is standard on the G66 Series Mouthpieces as well as some G67 models, and is available on other models as a special order.


3 Series Rim
  • The GR 3 Series Rim has a slightly flatter feel than the GR Standard rim.
  • It may have a familiar feel to conventional 3 players but with GR improvements in comfort and articulations.
  • All 3 Series Mouthpieces have the same alpha angle.
  • The bite is softer than the Standard GR Rim and GR E-Rim.
  • The larger bite radius may make the rim feel larger.
  • The outside diameter is slightly narrower than the Standard GR Rim.
  • This is a generous rim with excellent grip and support.


Z* Rim
  • This popular rim is flatter than the GR E-Rim and will feel more cushioned than the Standard GR Rim, yet with increased grip.
  • The Z* rim offers secure comfort, endurance and distribution of pressure.
  • The bite is medium and the alpha is high.
  • This is a very popular choice for players using conventional "4" rims who need increased endurance with improved articulations.


Z** Rim
  • Same as the Z* Series rim with a softer bite.
  • This allows for slightly more chop in the cup and is an excellent choice for commercial players who are accustomed to a softer bite.
  • The Z** rim offers secure comfort, endurance and an even distribution of pressure.
  • This is an ideal rim for players used to the Schilke 4 rim feel.


64.7 Series Rim
  • This rim is slightly wider than the GR Standard Rim and features a comfortable semi - flat contour.
  • It has a slightly more cushioned feel than the Standard GR rim but with a bite that allows for precise articulations.
  • This rim is an excellent alternative to 13A4a players who need a more secure grip with cleaner attacks.
  • Standard on the 64.7 Series.


65.6 Series Rims
Paul Butcher 65.6 Rim
  • Similar to the GR Standard rim but with the highpoint slightly closer to the bite and a slightly sharper bite.
  • This popular rim features a secure comfortable grip and crisp articulations.
  • Ideal for players who like to feel the secure grip of the rim which aids their attacks, flexibilities, and endurance.
  • Standard on the B65.6S, 65.6MS, 65.6M, 65.6*M2+, 65.6C
M65.6 Rim
  • With a flatter contour than the GR Standard rim, this rim has a very comfortable feel.
  • Coupled with the medium alpha angle and medium sharp bite this rim also allows for very quick attacks.
  • The medium alpha also allows for more lip room.
  • An ideal rim for the commercial player who wants more chop room cleaner attacks, and a fatter sound than most "conventional commercial" mouthpieces allow.
  • Standard on the 65.6S


66.5 Series Rims
  • This rim has a rounded contour and a softer bite than the Standard GR Rim.
  • Using digital analysis this rim has some profile similarities to the 1 1/4C and Stork 2, with GR improvements.
  • This rim is excellent for a player that doesn't get a vibrant sound on a flatter rim or with a sharp bite.
  • The rounded contour and soft bite makes this rim feel larger with added support.
  • Flexibility is excellent, articulations snap.


Q Series Rims
  • The Q rim is slightly flat, outside diameter follows is tradition in width and contour, highpoint is further out than the standard GR Rim.
  • The bite is medium sharp with the traditional feel and grip, and the alpha is medium for lip freedom, support, and articulation.
  • The bite grip holds the lips from penetrating too far into the cup.
  • Standard on the 66Q Series Trumpet Mouthpieces.


Cornet Rims
  • GR Cornet Rims match those of the corresponding GR Trumpet Mouthpieces.
  • When ordering, please specify the rim, cup diameter, and cornet cup.


Flugelhorn Rims
  • GR Flugelhorn Rims match those of the corresponding GR Trumpet Mouthpieces.
  • When ordering, please specify the rim, cup diameter, and whether you require the FL or FD Model.


Piccolo Trumpet Rims
  • GR Piccolo Trumpet Mouthpiece Rims feature contours very similar to our Standard Rims.
  • This rim is comfortable and is easy for most players to adapt to quickly.
  • The width will feel generous and will aid endurance.
  • The bite radius has been increased to give the feel of a larger mouthpiece while keeping the buzz ring smaller.
  • They are slightly wider than our Standard Rims for support in high piccolo trumpet playing.
  • Flexibility is good yet attacks will not suffer.
  • The 64.4P and 66PM-T have a sharper bite than standard.


Lexan and Delrin Rims
  • Our Polycarbonate (Lexan and Delrin) rims offer your chops a comfortable warm feel for when the weather gets blustery.
  • Alternately, GR Lexan Rims offer comfort, grip, and support when the temperatures go through the roof!
  • This rim is also an excellent alternative to those players who are allergic to silver or gold plating.

  • GR takes an existing GR Mouthpiece and removes the rim.
  • Then he will machine a matching rim out of Polycarbonate plastic, and match it perfectly to the bottom portion of the mouthpiece.
  • This screw rim set up is the ultimate choice for any outdoor playing.
  • Please be aware that we only produce these rims to fit GR Mouthpieces.
  • We will not thread other manufacturers cups for our rims.
  • The Polycarbonate Screw Rims are not meant to be interchanged, but are designed to provide an alternative playing surface.

GR Lexan Rims are also being used by players who seek a certain feel to their mouthpiece.
  • Secure grip that is very easy on the chops.
  • GR Delrin Rims offer all of the features of the Lexan, but with a slightly more slippery feel.
  • Lexan Grips - Delrin Slips
  • GR Polycarbonate Rims are F.D.A. approved!
  • Not all plastic, nylon, or polycarbonate material is approved by the F.D.A.
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Lexan Rim Delrin Rim
Lexan Rim
Our Price: $100.00
Delrin Rim
Our Price: $100.00