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| Category: | Rear Derailleurs |
| Name: | SunTour RD-XC00, XC 9000 |
| Brand: | SunTour |
| Primary Group: | XC 9000 |
| Model: | RD-XC00 |
| Years: | 1987 |
| Country: | Japan |
| Weight: | 255 grams (Spec) |
| Added By: | Catnap on 01/18/11 |
| Updated By: | Swede on 05/12/20 |
Additional Photos - click for full size |
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 Verify Component Photos |
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| Outer Plate Markings | SunTour XC 9000 | Inner Plate Markings | |
| Material | Aluminum Alloy; Steel | Design Category | Slant parallelogram |
| Attachment Bolt Size | 5mm Allen Key | Cable Attachment Bolt Size | 5mm Allen Key |
| Shifting Systems | SunTour AccuShift | Cable Adjuster | Yes |
| Cage Length | Long | Max Cog Size | |
| Max Chain Wrap | | | |
| Component Variations | View Detailed List Manage Variations |
| Variations of Component exist (Component is 1 of 3) | Brand | Group |
| SunTour RD-XC10-GXB, XC 9010 | SunTour | XC 9000 |
| SunTour RD-XC10-SSB, XC 9010 | SunTour | XC 9000 |
| Component Groups |
| Primary Group Name | Brand | Quick Info | Browse Group Components |
| XC 9000 | SunTour | 1987 - 1989, Mountain Bike | View 28 Components |
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)
