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The GR 64.7 Series cup diameter is somewhat similar to a conventional 13 diameter. 64.7S is a great alternative for those who "bottom out" on a 13A4a.
The rim is slightly wider than the standard GR rim, and features a semi - flat contour. It has a slightly more cushioned feel than Standard but with a bite that allows for precise articulations.
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Models |
Backbore |
Cup
Volume |
Cup
Volume |
Cup Diameter r2 |
r4 |
Rim |
|
Trudell
64.7 |
Number |
Description |
Cubic
Inches |
Inch |
mm |
Fraction |
@.032" |
Contour |
Bite |
Alpha
Angle |
|
64.7S |
1 |
Small |
0.063 |
0.647 |
16.43 |
41.4/64 |
0.654 |
Semi
Flat - Wide |
Medium
Sharp |
High |
|
64.7MS |
1 |
Small |
0.066 |
0.647 |
16.43 |
41.4/64 |
0.654 |
Semi
Flat - Wide |
Medium
Sharp |
High |
|
64.7M |
2 |
Medium
Small |
0.069 |
0.647 |
16.43 |
41.4/64 |
0.654 |
Semi
Flat - Wide |
Medium
Sharp |
High |
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