SunTour XC Pro (Rear, Freewheel)
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Category:  Hubs
Name:  SunTour XC Pro (Rear, Freewheel)
Brand:  SunTour
Primary Group:  XC Pro
Model:  
Years:  Early 1990's
Country:  Japan
Added By: JFischer on 07/21/11
Updated By: movinyl on 08/27/12
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SunTour XC Pro (Rear, Freewheel)SunTour XC Pro (Rear, Freewheel)SunTour XC Pro (Rear, Freewheel)
 Verify Component Photos
Gear Compatibility FreewheelFront Bearing Size/Count
Rear Bearing Size/CountRear Spacing135mm
Spoke Drilling32; 36Flange SizeLow Flange
Gear Threading/Pattern English/ISO: 1.375 x 24 TPIBody MarkingsSunTour XC Pro
Axle MaterialSteelShell MaterialAluminum
General Information
 
Quality:Rarity:
 
 
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Additional Resources
Resources:Reference & ChartsCatalogsExternal Resources
Component VariationsView Detailed List  Manage Variations
Variations of Component exist (Component is 1 of 3)BrandGroup
SunTour XC Pro (Front)SunTourXC Pro
SunTour FH-XP20-7, XC Pro MD (Rear, Cassette)SunTourXC Pro
Component Groups
Primary Group NameBrandQuick InfoBrowse Group Components
XC ProSunTour1990 - , Mountain BikeView 23 Components
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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