SunTour BA-GP00-S, GPX
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Category:  Brakes
Name:  SunTour BA-GP00-S, GPX
Brand:  SunTour
Primary Group:  GPX
Model:  BA-GP00-S
Years:  1989 - 1991
Country:  Japan
Weight:  370 grams
Added By: CV-6 on 12/23/07
Updated By: JFischer on 06/09/09
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SunTour BA-GP00-S, GPXSunTour BA-GP00-S, GPXSunTour BA-GP00-S, GPX
Design Category Single PivotCable Adjuster
Quick Release YesAttachment Bolt TypeRecessed Allen Key
Cable Attachment Bolt5mm Allen KeyFront of Arm MarkingsSuntour GPX
Back of Arm MarkingsSuntour, reach specs, date codeReach CategoryShort reach
Min Reach39mmMax Reach48mm
General Information
Totally enclosed spring makes for a very clean looking caliper.
Quality:Rarity:
 
 
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Additional Resources
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Resources:Reference & ChartsCatalogsExternal Resources
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
GPXSunTour1989 - 1991, Road RaceView 14 Components
Details:  1989 ranking was Superbe Pro, Sprint 9000, GPX, Ole, Edge 4050, Blaze 3040.
1991 ranking was Superbe Pro, Sprint         , GPX,  Radius
1992 ranking was Superbe Pro, SL             , GPX,  Radius
Brand Information(click to expand)

SunTour (Maeda)

SunTour derailleurs have a two-letter date code. On rear derailleurs the code is stamped on the back side of the inner parallel arm. On front derailleurs it is stamped on the back side of the inner cage.

The first letter represents the year. Larry Osborn and I believe O (Oh) is 1972, V is 1979 and A is 1984. As with Shimano, the second letter is the month code, where A is January and L is December.

SunTour Year Code

N
O
P
Q
R
S
T
U
V
W
X
Y
Z
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
 
A
B
C
D
E
F
G
H
I
1984
1985
1986
1987
1988
1989
1990
1991
1992

SunTour Month Code

A
B
C
D
E
F
G
H
I
J
K
L
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

The earliest Suntour derailleur I have found with a code is marked OF. A rear derailleur marked OD (corresponding to April of 72) was reported by Leighton Walter. I have a bike that dates from between 1970 to 1972 that has the original SunTour derailleurs. These derailleurs do not have date codes on them, so I believe the coding started sometime between 1970 and April of 1972.

(source: vintage-trek.com)

 
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