939 / 1355
EXHAUST
TIRES
TUBES
TIRE
ACCESSORIES
BIKE
ACCESSORIES
PITBIKE
GRAPHICS /SEAT
BODY
MIRRORS
CONTROLS
BARS /GRIPS
LEVERS
CABLES
INTAKE
FUELSYSTEMS
AIR FILTERS
OIL FILTERS
ELECTRICAL
SPARKPLUGS
BATTERIES
CHARGERS
ENGINE
PISTONS
SUSPENSION
DRIVE
CHAIN
SPROCKETS
BRAKES
CHEMICALS
GASCANS
TOOLS
LOCKS
RAMPS /STRAPS
TRAILERS
PROMOTIONAL
REFERENCE
INDEX
x
X X
X
X
939
STOCKED SIZES: 12-15 means 12 THRU 15
12, 15 means 12 AND 15 only.
Continued on the next page
OEM GEARING
REAR SPROCKETS
STEEL COUNTERSHAFT
Application
Year
Rear C/S
Chain/
Links
Alum. Rear
Sizes Stocked
Standard
Sizes
Stocked Pro Only
Sizes
Stocked
YAMAHA
(
cont
’
d
...)
IT250
‘81-82
50 13 520-108
50-7057__
44,47,49,52,56
50-555__
11-16
50-7057U__
48,51,52 Pro-Series
IT250
‘83
48 13 520-112
50-7057__
44,47,49,52,56
50-555__
11-16
50-7057U__
48,51,52 Pro-Series
MX250
‘73-74
51 14 520-104
50-756__
11-17
50-085__
16
‘75
50 13 520-108
50-7056__
40-45,48-50,52,54
50-756__
11-17
50-085__
16
TT250
‘80
51 15 520-100
50-755__
13,15
‘81-82
49 14 520-100
50-755__
13,15
TT-R250
‘99-06
52 13 520-110
50-7057__
44,47,49,52,56
50-7057U__
48,51,52 Pro-Series
TY250
‘74-77
53 14 428-112
50-7083__
50,55
50-732__
11-
15,17,18
TY250L
‘84
42 12 520-96
50-445__
12-15
WR250
‘90-96
52 14 520-116
50-7057__
44,47,49,52,56
50-555__
11-16
50-7057U__
48,51,52 Pro-Series
WR250
‘97
49 14 520-114
50-7057__
44,47,49,52,56
50-555__
11-16
50-7057U__
48,51,52 Pro-Series
WR250F 4-stroke
‘01-06
52 13 520-114
50-3156__
42,44,46-52
50-757__
12-14
50-3156U__
51 Pro-Series
WR250F 4-stroke
‘07-13
50 13 520-114
50-3156__
42,44,46-52
50-757__
12-14
50-3156U__
51 Pro-Series
WR250R4-stroke
All
43 13 520-108
50-3156__
42,44,46-52
50-757__
12-14
50-3156U__
51 Pro-Series
WR250X4-stroke
All
42 13 520-108
50-3156__
42,44,46-52
50-757__
12-14
50-3156U__
51 Pro-Series
XT250
‘80-83
47 15 520-98
50-755__
13,15
XT250L,LC
‘84
48 15 520-106
50-654__
12,13
YZ250
‘74-75
52 13 520-106
50-7056__
40-45,48-50,52,54
50-756__
11-17
50-085__
16
‘76
50 13 520-106
50-7056__
40-45,48-50,52,54
50-756__
11-17
50-085__
16
‘77, 79 54 13 520-108
50-7056__
40-45,48-50,52,54
50-555__
11-16
‘78
54 13 520-104
50-7056__
40-45,48-50,52,54
50-555__
11-16
YZ250
‘80
48 13 520-106
50-7057__
44,47,49,52,56
50-555__
11-16
50-7057U__
48,51,52 Pro-Series
YZ250
‘81
48 14 520-110
50-7057__
44,47,49,52,56
50-555__
11-16
50-7057U__
48,51,52 Pro-Series
YZ250
‘82
45 13 520-110
50-7057__
44,47,49,52,56
50-555__
11-16
50-7057U__
48,51,52 Pro-Series
YZ250
‘83-84
48 13 520-112
50-7057__
44,47,49,52,56
50-555__
11-16
50-7057U__
48,51,52 Pro-Series
YZ250
‘85-97
49 14 520-114
50-7057__
44,47,49,52,56
50-555__
11-16
50-7057U__
48,51,52 Pro-Series
YZ250
‘98
50 14 520-114
50-7057__
44,47,49,52,56
50-555__
11-16
50-7057U__
48,51,52 Pro-Series
YZ250/X
99-16
50 14 520-114
50-3156__
42,44,46-52
50-756__
11-17
50-085__
16
50-3156U__
51 Pro-Series
YZ250F
‘01-06
48 13 520-112
50-3156__
42,44,46-52
50-757__
12-14
50-3156U__
51 Pro-Series
YZ250F
‘07-11
49 13 520-112
50-3156__
42,44,46-52
50-757__
12-14
YZ250F/X
12-16
50 13
50-3156U__
51 Pro-Series
50-757__
12-14
BW350
‘88
37 13 520-76
Rear Drive
50-652__
13
17 14
530
50-772__
16 Front Drive
TT350
‘86-87
50 14 520-104
50-7057__
44,47,49,52,56
50-754__
13,15
50-7057U__
48,51,52 Pro-Series
XT350
‘85-00
55 19 428-130
50-735__
16,17,19
DT360
‘74
44 15 520-104
50-7052__
40,44
50-756__
11-17
50-085__
16
MX360
‘73-74
51 15 520-106
50-756__
11-17
50-085__
16
RT1 360,
‘70-71
39 14 520-102
50-7052__
40,44
50-756__
11-17
50-085__
16
RT1 MX360
‘70-71
44 14 520-110
50-7052__
40,44
50-756__
11-17
50-085__
16
RT2 360
‘72
39 15 520-102
50-7052__
40,44
50-756__
11-17
50-085__
16
RT2 MX360
‘72
51 15 520-106
50-756__
11-17
50-085__
16
RT3 360
‘73
39 15 520-102
50-7052__
40,44
50-756__
11-17
50-085__
16
XS360
‘76-77
40 16 530-100
50-7042__
-
50-776__
13-17
YZ360
‘74-75
48 15 520-104
50-7056__
40-45,48-50,52,54
50-756__
11-17
50-085__
16
SPROCKETS