ENGINE
HIGH-PERFORMANCE SNOWMOBILE PISTONS (CONT)
BORE X
PISTON/
NO.
STROKE DISPL. SIZE
GASKET
PISTON
REPL. RING REPL.
REPL.
TOP END
FITS MODEL
OF CYL. (MM)
(CC)
(MM) KIT P ART  # P ART  #
SET P ART  # WRIST PIN CIRCLIPS
BEARING
SKI-DOO (ROTAX ENGINE) (CONT)
453 Engine Type
2
65
437
STD
0903-0085 0910-0564
-
S-280
CW18
-
MXZ 440 99-06
x
Liquid Cooled
65.8
Pro-Lite
Nikasil Bore
454 Engine Type
2
67.5
437
STD
SK1205
2375M06750 2658LK
S-477
CW18
-
MXZ 440 Cross Country 95-98
x
0.50
0903-1188 0910-4008
-
Liquid cooled. Pro-Lite, includes wrist pin.
61
Cast iron bore.
Kit does not include top-end gasket kit.
467 Engine Type
2
69.5
463
STD
SK1027
2312M06950 2736CD
-
CW18
B1003
SS25SP 84, Formula SS 467 85, Formula GLX 90,
x
466
0.25
-
0910-3983
2746CD
Formula MXZ 93-94, Formula XT 94,
61
469
0.50
SK1028
2312M07000 2756CD
Formula MX 85-95
475
1.00
0910-3984
2776CD
Cast iron bore.
503 Engine Type
2
72
497
STD
0903-1189 2373M07200 -
S-513
CW18
B1003
Blizzard 5500 79-81, Everest 500 80-83, Everest
x
504
0.50
-
2373M07250 -
500E 80-83, Blizzard 5500 MX 82-84, Escapade
61
506
1.00
-
2373M07300 -
87-89, Voyager 89, Alpine 500 83-90, Cheyenne
511
1.50
0903-1190 2373M07350 -
89-91, Alpine 500 94, Safari 503 93-94, Safari 503
LC 86-94, Skandic 500 87-94, Formula SL 96-99,
Touring SLE 95-99, Formula Deluxe 500F 99-01,
Grand Touring Cargo F 01, Touring 500 Fan 01,
Grand Touring F 01-02, MXZ 500 Fan 01-02,
Skandic 500 96-02, Summit 500 Fan 01-02,
Skandic 500 Sport 03, Skandic 550 SWT 96-03,
Skandic 550 WT 96-03
Pro-Lite, includes wrist pin. Cast iron bore.
494 Engine Type
2
69.5
499
STD
SK1243
2381M06950 2736CD
S-511X
CW18
-
Formula Z 500 99, Grand Touring 500 98-99,
x
506
0.50
SK1244
2381M07000 2756CD
MXZ 500 98-99, Skandic 500 WT LC 98-99,
65.8
512
1.00
0903-1213 2381M07050 2776CD
Formula 500 LC 00, Formula Deluxe 500 LC
98-00, Summit 500 97-00, Touring 500 LC 00,
MXZ 500 Trail 01, Grand Touring Std. 500 01
Note: Fits rotary valve motors only.
Pro-Lite, includes wrist pin. Cast iron bore.
493 Engine Type: MXZ500 00-03, MXZ500 Trail
2
69.5
499
STD
SK1322
2436M06950 2736CS
-
CW18
-
01, Formula Deluxe 500 01, Grand Touring 500
x
506
0.50
SK1323
0910-4025
2756CS
01-03, Legend 500 02-03
65.8
514
1.00
0903-1232 0910-4026
2776CS
Pro-Lite, includes wrist pin
Cylinder reed motor. Cast iron bore. Liquid-cooled.
537 Engine Type
2
72
521
STD
0903-1191 2373M07200 -
S-513
CW18
B1003
Formula Plus 521 86-88
x
528
0.50
0903-1192 2373M07250 -
Pro-Lite, includes wrist pin. Liquid cooled.
64
535
1.00
0903-1193 2373M07300 -
Cast iron bore.
543
1.50
0903-1194 2373M07350 -
536 Engine Type
2
72
521
STD
0903-1195 2373M07200 -
S-513
CW18
B1003
Formula Plus 521 89-91
x
0.50
0903-1196 2373M07250 -
Pro-Lite, includes wrist pin. Liquid cooled.
64
1.00
0903-1197 2373M07300 -
Cast iron bore.
1.50
-
2373M07350 -
550F Engine Type
Expedition Sport 05-08, Freestyle Backcountry
2
76
553
STD
0903-0606 0910-4032
-
-
CW20
-
07-08, Freestyle Park 07-08, Freestyle Session 07,
x
561
0.50
0903-0607 0910-4033
Grand Touring 03/10-15, GSX Fan 05-08, GTX Fan 05-08,
61
568
1.00
0903-0608 0910-4034
Legend 03-04, MXZ Fan 03-08, MXZ 550 X 07-08,
Skandic SWT 04-08, Skandic SUV 04-08,
Skandic Tundra LT 08, Skandic WT 04-08,
Summit Fan 03-08
Fan Cooled
582 Engine Type
2
76
581
STD
0903-1198 2376M07600 2992LT
S-477
CW18
B1003
Mach I Rave Valve 89-90, Formula Plus X 93,
x
588
0.50
0903-1199 2376M07650 3012LT
Formula STX 94-96, Formula 583 97,
64
596
1.00
0903-1200 2376M07700 3032LT
Formula DL 98, MXZ 583 98, Summit 583 94-98,
604
1.50
0903-1201 2376M07750 -
Formula Z 583 94-99
611
2.00
0903-1202 2376M07800 3071LT
Pro-Lite, includes wrist pin.
Liquid cooled, cast iron bore.
583 Engine
2
76
581
STD
SK1226
2376M07600 2992LT
S-477
CW18
B1003
Mach I Rave Valve 89-90, Formula Plus X 93,
x
588
0.50
SK1227
2376M07650 3012LT
Formula STX 94-96, Formula 583 97, Formula DL
64
596
1.00
0903-1203 2376M07700 3032LT
98, MXZ 583 98, Summit 583 94-98, Formula Z 583
604
1.50
0903-1204 2376M07750 -
94-99, 583-Z 98, STX-Z 94-96
611
2.00
0903-1205 2376M07800 3071LT
Pro-Lite, includes wrist pin.
Liquid cooled, cast iron bore.
HIGH-PERFORMANCE SNOWMOBILE PISTONS continued on next page.
2017 PARTS UNLIMITED SNOWMOBILE