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Continued on the next page
High Strength, Easy to Install. Two are furnished
with every piston. Additional circlips are sold per pair.
Order numbers below for replacement.
Size CS-Circlip CW-Circlip List
10 mm CW-10 $2.00
12 mm CW-12 2.00
13 mm CS-13 CW-13 2.00
14 mm CW-14 2.00
15 mm CW-15 2.00
16 mm CW-16 2.00
16 mm W-6883 2.00
17 mm CW-17 2.00
18 mm CS-18 CW-18 2.00
19 mm CW-19 2.00
20 mm CS-20 CW-20 2.00
21 mm CW-21 2.00
22 mm CS-22 CW-22 2.00
22 mm W-5590 4.84
23 mm CW-23 2.00
24 mm CW-24 2.00
24 mm W-6045 2.00
28 mm CW-28 2.00
PISTON CLIPS
M-SERIES PART NUMBER SYSTEM
In 2001, Wiseco changed the part numbers on all
individual snowmobile piston kits. The P-Series part
numbers have been converted to the new M-Series part
numbering system.
The P-Series system was based on the English, or
Imperial measuring system. The M-Series is based on the
metric system. The M-Series was implemented to ensure
accuracy for today’s high performance snowmobile motors.
This chart shows the new millimeter identification
stamp in comparison to old identification
WISECO PISTON SIZE IS
DESIGNATED IN MILLIMETERS
STD................................................ STD
.25.................................................. .010
.50.................................................. .020
.75.................................................. .030
1.0.................................................. .040
1.25................................................ .050
1.5.................................................. .060
2.0.................................................. .080
NEW IDENTIFICATION OLD IDENTIFICATION
STAMP (in mm) STAMP (in inches)
LABELS FOR M-SERIES PART NUMBERS
Part number
Description Ring package & bore size
Run code, circlip & wrist pin
Minimum clearance required
Replaces number
Bar Code
M-STYLE DOME STAMPING
Run/Date Code
Part Number (complete)
Ring Type
Exhaust Arrow
CW STYLE CIRCLIP
FOR APPLICATIONS SEEWISECO PISTON PAGES. IFYEAR MODEL IS NOT LISTED MEASURE FOR FIT.
PISTON PIN NEEDLE CAGE BEARINGS
To order by Dimnsions, Measure:
ID = OD of Wrist Pin
OD = ID of Connecting Rod Top
Length = Length of Bearing Cage
CS STYLE CIRCLIP
Dimensions in mm
ID OD Length WPS# List
10 x 14 x 12.5 186-0019 $3.95
12 x 14.75 x
16.3
186-0017 6.95
12 x 15 x 14.5 B1041 17.50
12 x 15 x 14.5 186-0016 3.95
12 x 15 x 16.3 B1042 17.50
12 x 16 x 14.8 B1043 17.50
12 x 16 x 14.8 186-0018 7.95
12 x 16 x 15.5 B1000 16.50
12 x 17 x 14.2 B1015 16.50
14 x 18 x 15.6 B1080 17.50
14 x 18 x 15.8 186-0012 6.95
14 x 18 x 16 B1012 16.50
14 x 18 x 16.7 186-0011 7.95
Dimensions in mm
ID OD Length WPS# List
14 x 18 x 16.8 B1083 16.50
14 x 18 x 17.5 B1006 16.50
14 x 18 x 19 12-1401 7.95
14 x 18 x 20 B1018 16.50
15 X 19 X 16.7 186-0010 6.95
15 x 19 x 17 B1001 16.50
15 x 19 x 20 B1013 17.50
15 x 20 x 17.8 B1038 16.50
15 x 20 x 17.8 186-0015 7.95
15.5 x 21.5 x 20 12-1403 5.50
16 x 20 x 19 12-1402 8.95
16 x 20 x 19.5 B1016 17.50
16 x 20 x 19.8 B1082 17.50
16 x 20 x 22.5 B1021 17.50
Dimensions in mm
ID OD Length WPS# List
16 x 20 x 23 12-1405 10.50
16 x 21 x 19.5 B1008 17.50
16 x 21 x 22 12-1406 9.95
16 x 21 x 22.5 B1005 17.50
16 x 21 x 22.5 186-0009 8.95
18 x 22 x 19.65 B1037 17.50
18 x 22 x 19.8 186-0014 7.95
18 x 22 x 22 12-1410 8.50
18 x 22 x 22 B1003 17.50
18 x 22 x 23.5 186-0013 8.95
18 x 22 x 23.6 B1022 17.50
18 x 22 x 24 12-1411 10.50
18 x 23 x 22 B1014 18.50
18 x 23 x 22 12-1413 9.50
18 x 23 x 23.8 12-1408 7.95
18 x 23 x 24 B1002 18.50
18 x 23 x 24 12-1414 9.95
19 x 24 x 24.8 B1036 18.50
20 x 24 x 19 12-1400 5.50
Dimensions in mm
ID OD Length WPS# List
20 x 24 x 23 B1072 18.50
20 x 24 x 24 B1071 18.50
20 x 25 x 21.8 B1039 18.50
20 x 25 x 22.8 12-1407 8.50
20 x 25 x 23 B1031 18.50
20 x 25 x 24 12-1404 9.50
20 x 25 x 25 B1023 18.50
20 x 25 x 29 B1004 19.50
20 x 26 x 24 B1024 18.50
21 X 25 X 24 B1081 17.50
21 x 27 x 24.7 12-1417 9.50
22 x 25 x 22.8 12-1416 7.50
22 x 27 x 23.7 12-1415 8.95
22 x 27 x 24.8 B1030 18.50
22 x 27 x 22.8 B1074 18.50
24 x 29 x 24 12-1412 8.95
24 X 29 X 25 B1075 18.50
24 x 29 x 26 12-1418 7.50
ENGINE