Gotoh Bass Tuners - GB640

Gotoh GB640-GG Lightweight and solid, Gotoh's GB640 and reverse-wind GBR640 bass tuners have a gear ratio of 28:1. Available in seven finishes. The weight per piece is only 67 grams, compare with similar sized tuners with a weight of 110 to 115 grams per piece.
RES-O-LITE
Example shown in nickel finish (N).
  • GOTOH GB640 Dimension Diagram
    GB640/GBR640 Dimension Diagram

    Please check the measurements in this guide against the dimensions of the headstock that you plan to install upon. It is always best practice to measure carefully and/or to use the service of repair professionals. GB640 and GBR640 machine heads have the same dimensions.

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Number of matching products: 21
Product Price
Gotoh GB640-4-B
Black Chrome GB640 4-String Bass Tuning Machine Set
Set of four GB640 in black chrome finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
4 items in set
Headstock: L2+R2 • L4 • R4 • L3+R1
Body: GB640
Finish: Black Chrome
String Count: 4-String
$109.10
2+ $104.74
4+ $100.37
6+ $96.01
Gotoh GB640-5-B
Black Chrome GB640 5-String Bass Tuning Machine Set
Set of five GB640 in black chrome finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
5 items in set
Headstock: L3+R2 • L4+R1 • L5 • L1+R4 • L2+R3
Body: GB640
Finish: Black Chrome
String Count: 5-String
$136.25
2+ $130.80
4+ $125.35
6+ $119.90
Gotoh GB640-6-B
Black Chrome GB640 6-String Bass Tuning Machine Set
Set of six GB640 in black chrome finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
6 items in set
Headstock: L3+R3 • L4+R2 • L2+R4
Body: GB640
Finish: Black Chrome
String Count: 6-String
$162.43
2+ $155.93
4+ $149.44
6+ $142.94
Gotoh GB640-4-CK
Cosmo Black GB640 4-String Bass Tuning Machine Set
Set of four GB640 in cosmo black finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
4 items in set
Headstock: L2+R2 • L4 • R4 • L3+R1
Body: GB640
Finish: Cosmo Black
String Count: 4-String
$100.82
2+ $96.79
4+ $92.75
6+ $88.72
Gotoh GB640-5-CK
Cosmo Black GB640 5-String Bass Tuning Machine Set
Set of five GB640 in cosmo black finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
5 items in set
Headstock: L3+R2 • L4+R1 • L5 • L1+R4 • L2+R3
Body: GB640
Finish: Cosmo Black
String Count: 5-String
$125.88
2+ $120.84
4+ $115.81
6+ $110.77
Gotoh GB640-6-CK
Cosmo Black GB640 6-String Bass Tuning Machine Set
Set of six GB640 in cosmo black finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
6 items in set
Headstock: L3+R3 • L4+R2 • L2+R4
Body: GB640
Finish: Cosmo Black
String Count: 6-String
$149.66
2+ $143.67
4+ $137.69
6+ $131.70
Gotoh GB640-4-GG
Gold GB640 4-String Bass Tuning Machine Set
Set of four GB640 in gold finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
4 items in set
Headstock: L2+R2 • L4 • R4 • L3+R1
Body: GB640
Finish: Gold
String Count: 4-String
$116.57
2+ $111.91
4+ $107.24
6+ $102.58
Gotoh GB640-5-GG
Gold GB640 5-String Bass Tuning Machine Set
Set of five GB640 in gold finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
5 items in set
Headstock: L3+R2 • L4+R1 • L5 • L1+R4 • L2+R3
Body: GB640
Finish: Gold
String Count: 5-String
$145.58
2+ $139.76
4+ $133.93
6+ $128.11
Gotoh GB640-6-GG
Gold GB640 6-String Bass Tuning Machine Set
Set of six GB640 in gold finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
6 items in set
Headstock: L3+R3 • L4+R2 • L2+R4
Body: GB640
Finish: Gold
String Count: 6-String
$173.36
2+ $166.43
4+ $159.49
6+ $152.56
Gotoh GB640-4-N
Nickel GB640 4-String Bass Tuning Machine Set
Set of four GB640 in nickel finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
4 items in set
Headstock: L2+R2 • L4 • R4 • L3+R1
Body: GB640
Finish: Nickel
String Count: 4-String
$89.23
2+ $85.66
4+ $82.09
6+ $78.52
Gotoh GB640-5-N
Nickel GB640 5-String Bass Tuning Machine Set
Set of five GB640 in nickel finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
5 items in set
Headstock: L3+R2 • L4+R1 • L5 • L1+R4 • L2+R3
Body: GB640
Finish: Nickel
String Count: 5-String
$111.42
2+ $106.96
4+ $102.51
6+ $98.05
Gotoh GB640-6-N
Nickel GB640 6-String Bass Tuning Machine Set
Set of six GB640 in nickel finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
6 items in set
Headstock: L3+R3 • L4+R2 • L2+R4
Body: GB640
Finish: Nickel
String Count: 6-String
$132.84
2+ $127.53
4+ $122.21
6+ $116.90
Gotoh GB640-4-XC
X-Chrome GB640 4-String Bass Tuning Machine Set
Set of four GB640 in x-chrome finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
4 items in set
Headstock: L2+R2 • L4 • R4 • L3+R1
Body: GB640
Finish: X-Chrome
String Count: 4-String
$115.26
2+ $110.65
4+ $106.04
6+ $101.43
Gotoh GB640-5-XC
X-Chrome GB640 5-String Bass Tuning Machine Set
Set of five GB640 in x-chrome finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
5 items in set
Headstock: L3+R2 • L4+R1 • L5 • L1+R4 • L2+R3
Body: GB640
Finish: X-Chrome
String Count: 5-String
$143.96
2+ $138.20
4+ $132.44
6+ $126.68
Gotoh GB640-6-XC
X-Chrome GB640 6-String Bass Tuning Machine Set
Set of six GB640 in x-chrome finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
6 items in set
Headstock: L3+R3 • L4+R2 • L2+R4
Body: GB640
Finish: X-Chrome
String Count: 6-String
$172.02
2+ $165.14
4+ $158.26
6+ $151.38
Gotoh GB640-4-XG
X-Gold GB640 4-String Bass Tuning Machine Set
Set of four GB640 in x-gold finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
4 items in set
Headstock: L2+R2 • L4 • R4 • L3+R1
Body: GB640
Finish: X-Gold
String Count: 4-String
$134.45
2+ $129.07
4+ $123.69
6+ $118.32
Gotoh GB640-5-XG
X-Gold GB640 5-String Bass Tuning Machine Set
Set of five GB640 in x-gold finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
5 items in set
Headstock: L3+R2 • L4+R1 • L5 • L1+R4 • L2+R3
Body: GB640
Finish: X-Gold
String Count: 5-String
$167.94
2+ $161.22
4+ $154.50
6+ $147.79
Gotoh GB640-6-XG
X-Gold GB640 6-String Bass Tuning Machine Set
Set of six GB640 in x-gold finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
6 items in set
Headstock: L3+R3 • L4+R2 • L2+R4
Body: GB640
Finish: X-Gold
String Count: 6-String
$200.79
2+ $192.76
4+ $184.73
6+ $176.70
Gotoh GB640-4-XN
X-Nickel GB640 4-String Bass Tuning Machine Set
Set of four GB640 in x-nickel finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
4 items in set
Headstock: L2+R2 • L4 • R4 • L3+R1
Body: GB640
Finish: X-Nickel
String Count: 4-String
$112.80
2+ $108.29
4+ $103.78
6+ $99.26
Gotoh GB640-5-XN
X-Nickel GB640 5-String Bass Tuning Machine Set
Set of five GB640 in x-nickel finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
5 items in set
Headstock: L3+R2 • L4+R1 • L5 • L1+R4 • L2+R3
Body: GB640
Finish: X-Nickel
String Count: 5-String
$140.88
2+ $135.24
4+ $129.61
6+ $123.97
Gotoh GB640-6-XN
X-Nickel GB640 6-String Bass Tuning Machine Set
Set of six GB640 in x-nickel finish. Gear ratio: 28:1. RES-O-LITE series. Adjustable tension. Weight per piece: 61.8 grams.
Package includes bushings + wood screws + hex wrench.
6 items in set
Headstock: L3+R3 • L4+R2 • L2+R4
Body: GB640
Finish: X-Nickel
String Count: 6-String
$168.33
2+ $161.60
4+ $154.86
6+ $148.13
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