EXHAUST
TIRES
TUBES
TIRE
ACCESSORIES
BIKE
ACCESSORIES
SNOWBIKE
PITBIKE
GRAPHICS /SEAT
BODY
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
811
Continued on the next page
Application
Bore x
Stroke mm
Disp.
(cc)
Bore
Size
mm
Sizes
In.
WPS# List
Repl. Ring
Set
Repl. Circlips
Wrist Pin
Top End
Bearing
YAMAHA 2 CYCLE
(
cont
’
d
...)
YZ125, ‘97 PRO-LITE
54 x 54.5 123
54
STD
693PS 128.00
2126CS
Circlips CW-15 B1038
Ceramic Composite, Cylinder
Wrist pin S-467
sleeving required for oversizes
YZ125, ‘97 PRO-LITE
54 x 54.5 123
54
STD
765PS $152.00
2126CS
Circlips CW-15
Racer Choice, GP Series
56
0.080
765P8 162.00
2205CS
Wrist pin S-632
YZ125, ‘98-01 PRO-LITE
54 x 54.5 124
54
STD
726PS 128.00
2126CS
Circlips CW-15 98-00
Ceramic Composite, Cylinder
54.5 0.020
726P2 128.00
2146CS
Wrist pin S-467
sleeving required for oversizes
55
0.040
726P4 128.00
2165CS
56
0.080
726P8 148.00
2205CS
B1038
YZ125, ‘02-04 PRO-LITE
54 x 54.5 124
54
STD
797PS 118.00
2126CST Circlips CW-15 B1001
Ceramic Composite, Cylinder
54.5 0.020
797P2 118.00
2146CS
Wrist pin S-467
sleeving required for oversizes
55
0.040
797P4 118.00
2165CS
56
0.080
797P8 142.00
2205CS
YZ125, ‘05-16 PRO-LITE
54 x 54.5 124
54
STD
845PS 118.00
2126CS
Circlips CW-15 B1001
Sleeving required for oversized
56
0.080
845P8 142.00
2205CS
S-668
YZ125, ‘05-16 GP Style
54 x 54.5 124
54
STD
846PS 152.00
2126CS
Circlips CW-15 B1001
Longer skirt, Thicker Dome
56
0.080
846P8 162.00
2205CS
S-668
No intake window, Cylinder sleeving required for oversized
58
0.120
846P12 162.00
2289CS
Crankcase clearance required for 57mm and larger
175CT-2,3, thru ‘77; 175MX, ‘79-81; 175DT, ‘79-82; YT175K,L, ‘84
66 x 50
172
66
STD
471PS $128.00
2598CD Circlips CW-16 B1021
66.5 0.020
471P2 128.00
2618CD Wrist pin S-259
67
0.040
471P4 128.00
2638CD
68
0.080
2677CD
175 YZ, IT ‘76-81
66 x 50
172
66
STD
2598CD Circlips CW-16 B1021
66.5 0.020
374P2 $128.00
2618CD Wrist pin S-259
67
0.040
374P4 128.00
2638CD
67.5 0.060
374P6 148.00
2658CD
68
0.080
2677CD
180 RT, ‘90-98
64.5 x 54 176
64.5 STD
772PS $128.00
2539CD Circlips CW-16 B1021
65
0.020
772P2 128.00
2559CD Wrist pin S-486
65.5 0.040
772P4 128.00
2579CD
66
0.060
2598CD
IT200N ‘84-86
66 x 57
195
66
STD
522PS $152.00
2598CD Circlips CW-16 B1005
66.5 0.020
2618CD Wrist pin S-259 12-1406
67
0.040
522P4 $152.00
2638CD
67.5 0.060
2658CD
68
0.080
522P8 $172.00
2677CD
WR200 ‘92-98
66.8 x 57 199
66.8 STD
818PS 152.00
2628CD Circlips CW-16
67
0.008
2638CD Wrist pin S-271
68.5 0.067
818P6 $172.00
2697CD
250 YZ,C,D,E,F ‘76-79; 250 DT2,3,MX, Enduro; IT250, ‘78-80
70 x 64
246
70
STD
234PS 162.00
2756CD Circlips CW-18 B1003
Reed Cutaway
70.5 0.020
234P2 162.00
2776CD Wrist pin S-343
71
0.040
234P4 162.00
2795CD
72
0.080
234P8 182.00
2835CD
250YZ,G,H,J 80-82; IT250, ‘81-82
70 x 64
246
70
STD
452PS 162.00
2756CD Circlips CW-18 IT250
81-82
70.5 0.020
2776CD Wrist pin S-343 B1003
71
0.040
452P4 $162.00
2795CD
YZ250
80-81
71.5 0.060
452P6 182.00
2815CD
B1003
72
0.080
452P8 182.00
2835CD
YZ250 82
B1014
IT250, ‘83 PRO-LITE
68 x 68
246.8 68
STD
515PS $162.00
2677CD Circlips CW-18 B1014
68.5 0.020
515P2 162.00
2697CD Wrist pin S-511
69
0.040
515P4 162.00
2717CD
YZ250, ‘83-87 PRO-LITE
68 x 68
246.8 68
STD
560PS 162.00
2677CD Circlips CW-18 B1014
Power Valve must be modified
68.5 0.020
560P2 162.00
2697CD Wrist pin S-511
for .040 and larger
69
0.040
560P4 162.00
2717CD
69.5 0.060
560P6 182.00
2736CD
70
0.080
560P8 182.00
2756CD
All kits come with pistons, rings and circlips.
Wrist Pin is included, except when noted.
For replacement ring pricing, see page 817
PISTONS