SunTour X-1
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Category:  Brake Levers
Name:  SunTour X-1
Brand:  SunTour
Primary Group:  X-1 Chroma
Model:  
Years:  1990 - ?
Country:  Japan
Added By: Catnap on 01/18/11
Updated By: Catnap on 01/21/11
Additional Photos - click for full size
SunTour X-1SunTour X-1SunTour X-1SunTour X-1
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StyleFlat BarReturn Spring 
Quick Release NoCable AdjusterYes
Lever Material Plastic (Delrin)Lever Markings
Body Material AluminumHood/Body MarkingsDIA-COMPE X-1 SHORT STOP
Attachment Bolt Access  
General Information
 
Quality:Rarity:
 
 
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Additional Resources
Resources:Reference & ChartsCatalogsExternal Resources
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
X-1 ChromaSunTour1989 - , Mountain BikeView 4 Components
Details:  The X-1 Chroma is a variation of the X-1 group that came with a bizarre clip-on plastic piece that came in a choice of three possible lurid colours - fluorescent pink, fluorescent yellow or fluorescent lime green.
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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