Home > Trumpet > 66 Series: .660" / 16.76mm


The GR 66 Series cup diameter is similar to a conventional 3 diameter. The 66M is a very popular choice for 3C players looking for more core in their sound with more secure articulations.

The 66Z Series and 66SZ are popular alternatives for players who "bottom out" or get a thin sound and poor articulations on a conventional 14A4a or similar models. Classic Blank is standard. Symphonic Blank is standard on the C** and C models.

Models Backbore Cup Volume Cup Volume Cup Diameter r2 r4 Rim
66 Number Description Cubic Inches Inch mm Fraction @.032" Contour Bite Alpha Angle
66Z* 1 Small 0.664 0.66 16.76 42/64 0.669 Flat Med. - Wide Medium High
66Z** 1 Small 0.0669 0.66 16.76 42/64 0.673 Flat Med. - Wide Soft High
66SZ 1 Small 0.0683 0.66 16.76 42/64 0.673 Medium Medium Medium High
G66** 1 Medium Small 0.0718 0.66 16.76 42/64 0.673 Medium Wide Medium High
G66*** 2 Medium 0.0793 0.66 16.76 42/64 0.673 Medium Wide Medium Medium High
66S 1 Small 0.072 0.66 16.76 42/64 0.673 Medium Medium Medium High
66MS 2 Medium Small 0.076 0.66 16.76 42/64 0.673 Medium Medium Medium High
66M 2 Medium 0.079 0.66 16.76 42/64 0.673 Medium Medium Medium High
66MX 3 Medium Large 0.085 0.66 16.76 42/64 0.673 Medium Medium Medium
66L 3 Medium Large 0.087 0.66 16.76 42/64 0.673 Medium Medium Medium
66LX 3 Large 0.0884 0.66 16.76 42/64 0.673 Medium Medium Low
66CX 3 Medium Large 0.0871 0.66 16.76 42/64 0.673 Medium Medium Low
66C* 3 Medium Large 0.0831 0.66 16.76 42/64 0.673 Medium Medium Medium High
66C** 3 Medium Large 0.0834 0.66 16.76 42/64 0.673 Medium Medium Medium High
66C 3 Medium Large 0.08 0.66 16.76 42/64 0.673 Medium Medium Medium High
66VB 3 Large Semi-V 0.0857 0.66 16.76 42/64 0.673 Medium Medium Medium
66VC 3 Large Semi-V 0.0862 0.66 16.76 42/64 0.673 Medium Medium Medium

66 Series Trumpet Mouthpieces G66 Series Trumpet Mouthpiece 66Z Series Trumpet Mouthpiece