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| Category: | Hubs |
| Name: | SunTour AT |
| Brand: | SunTour |
| Primary Group: | XCM |
| Model: | AT |
| Years: | Late 1980's - Early 1990's |
| Country: | Japan |
| Added By: | JFischer on 03/11/11 |
| Updated By: | JFischer on 03/11/11 |
Additional Photos - click for full size |
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Gear Compatibility  | Freewheel | Front Bearing Size/Count | |
| Rear Bearing Size/Count | | Rear Spacing | 126mm |
| Spoke Drilling | 36 | Flange Size | Low Flange |
| Gear Threading/Pattern | English/ISO: 1.375 x 24 TPI | Body Markings | SunTour AT |
| Axle Material | Steel | Shell Material | Aluminum |
| Component Groups |
| Primary Group Name | Brand | Quick Info | Browse Group Components |
| XC-Master | SunTour | 1989 - 1990, Mountain Bike | View 9 Components |
| Details: Lower end of the off-road XC line for SunTour in the late 80's to early 90's. Many of the parts were branded with their actual maker's names - Dia-Compe brakes and levers along with Sakae crankset. |
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
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N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z |
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1971 |
1972 |
1973 |
1974 |
1975 |
1976 |
1977 |
1978 |
1979 |
1980 |
1981 |
1982 |
1983 |
| |
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A |
B |
C |
D |
E |
F |
G |
H |
I |
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1984 |
1985 |
1986 |
1987 |
1988 |
1989 |
1990 |
1991 |
1992 |
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SunTour Month Code
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A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
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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)
