m
 WSM 2 Stroke Pistons (Includes Pistons, Rings, Pin, Clips)
APP. YEAR OE # SIZE PISTONS RINGS
 Honda
TRX 250R 1986 13101-HB9-305
STD
.25mm
.50mm
.75mm
1.0mm
50-205
50-205-04
50-205-05
50-205-06
 50-205-07
51-205
51-205-04
51-205-05
51-205-06
51-205-07
TRX 250R 1987-1989 13101-HA2-772
STD
.25mm
.50mm
.75mm
1.0mm
50-210
50-210-04
50-210-05
50-210-06
 50-210-07
51-210
51-210-04
51-210-05
51-210-06
51-210-07

PolariS
250 All 3083942 STD 50-300P 51-300
Platinum
.25mm
.50mm
.75mm
1.0mm
50-300-04P
50-300-05P
50-300-06P
50-300-07P
51-300-04
51-300-05
51-300-06
51-300-07
300 - 3085894 STD 50-310P 51-310
Platinum
.25mm
.50mm
.75mm
1.0mm
50-310-04P
50-310-05P
50-310-06P
50-310-07P
51-310-04
51-310-05
51-310-06
51-310-07
400 All - STD 50-305P 51-305
Platinum
.25mm
.50mm
.75mm
1.0mm
50-305-04P
50-305-05P
50-305-06P
50-305-07P
51-305-04
51-305-05
51-305-06
51-305-07

 Suzuki
LT 250 1988-1992 -
STD
.25mm
.50mm
.75mm
1.0mm
50-600
50-600-04
50-600-05
50-600-06
50-600-07
51-600
51-600-04
51-600-05
61-600-06
51-600-07
LT 500 1988-1992 -
STD
.25mm
.50mm
.75mm
1.0mm
50-605
50-605-04
50-605-05
50-605-06
50-605-07
51-605
51-605-04
51-605-05
61-605-06
51-605-07

 Yamaha
YFS BLASTER All 2XJ-11631-01-97
STD
.25mm
.50mm
.75mm
1.0mm
50-530P
50-530-04P
50-530-05P
50-530-06P
50-530-07P
51-530
51-530-04
51-530-05
61-530-06
51-530-07
YFZ 350T BANSHEE All 2GU-11631-00-94 STD 50-520P 51-520
Platinum
.25mm
.50mm
.75mm
1.0mm
50-520-04P
50-520-05P
50-520-06P
50-520-07P
51-520-04P
51-520-05P
51-520-06P
51-520-07P
WSM 4 Stroke Cast Pistons (Includes Pistons, Rings, Pin, Clips)
APP. YEAR SIZE PISTONS RINGS

 Honda
ATC 200 E, ES, M, S 1981-1986

STD

50-221

51-221
TRX 200 1984

.25MM

 50-221-04

 .50MM

 50-221-05

.75MM

 50-221-06

1.00MM

 50-221-07
51-221-04
51-221-05
51-221-06
51-221-07
ATC 200 X 1983-1987

STD

50-222

51-221
TRX 200 SX 1986-1988

.25MM

 50-222-04

 .50MM

 50-222-05

.75MM

 50-222-06

1.00MM

 50-222-07
51-221-04
51-221-05
51-221-06
51-221-07
ATC 250 ES 1985-1987

STD

50-224

51-224
ATC 250 SX
 
TRX 250

.25MM

 50-224-04

 .50MM

 50-224-05

.75MM

 50-224-06

1.00MM

 50-224-07
51-224-04
51-224-05
51-224-06
51-224-07
TRX 250 X 1997-2002

STD

50-225

51-225
TRX 250 EX 2001-2002

.25MM

 50-225-04

 .50MM

 50-225-05

.75MM

 50-225-06

1.00MM

 50-225-07
51-225-04
51-225-05
51-225-06
51-225-07
TRX 300 /FW 1998-2002

STD

50-223

51-224

.25MM

 50-223-04

 .50MM

 50-223-05

.75MM

 50-223-06

1.00MM

 50-223-07
51-224-04
51-224-05
51-224-06
51-224-07
TRX 350 2000-2003

STD

50-226

51-226

.25MM

 50-226-04

 .50MM

 50-226-05

.75MM

 50-226-06

1.00MM

 50-226-07
51-226-04
51-226-05
51-226-06
51-226-07
TRX 400 /FW 1995-2001

STD

50-220

51-220

.25MM

 50-220-04

 .50MM

 50-220-05

.75MM

 50-220-06

1.00MM

 50-220-07
51-220-04
51-220-05
51-220-06
51-220-07
TRX 450 ES/S 1998-2001

STD

50-227

51-227

.25MM

 50-227-04

 .50MM

 50-227-05

.75MM

 50-227-06

1.00MM

 50-227-07
51-227-04
51-227-05
51-227-06
51-227-07

 Kawasaki
KLF220 1988-2001

STD

50-250

51-250

.25MM

 50-250-04

 .50MM

 50-250-05

.75MM

 50-250-06

1.00MM

 50-250-07
51-250-04
51-250-05
51-250-06
51-250-07
KEF 300
KLF 300
KVF 300

 

1995-2001
1985-2001
1999-2001

STD

50-255

51-255

.25MM

 50-255-04

 .50MM

 50-255-05

.75MM

 50-255-06

1.00MM

 50-255-07
51-255-04
51-255-05
51-255-06
51-255-07

 Suzuki
LT 230E/GE
LTF 230
LT4WD
LTF 250
LTF4WD
1985-1993
1986-1987
1987-1996
1998-2001
1997-1998

 

STD

50-400

51-400

.25MM

 50-400-04

 .50MM

 50-400-05

.75MM

 50-400-06

1.00MM

 50-400-07
51-400-04
51-400-05
51-400-06
51-400-07
LTF 300 F
LTF4WDX

 

1999-2002
1991-1998

 

STD

50-401

51-401

.25MM

 50-401-04

 .50MM

 50-401-05

.75MM

 50-401-06

1.00MM

 50-401-07
51-401-04
51-401-05
51-401-06
51-401-07

 Yamaha
YFM 80 1985-2001

STD

50-536

51-536

.25MM

 50-536-04

 .50MM

 50-536-05

.75MM

 50-536-06

1.00MM

 50-536-07
51-536-04
51-536-05
51-536-06
51-536-07
YFM 200 /DX
YTM 200 E/ER

 

1985-1989
1983-1985

 

STD

50-537

51-537

.25MM

 50-537-04

 .50MM

 50-537-05

.75MM

 50-537-06

1.00MM

 50-537-07
51-537-04
51-537-05
51-537-06
51-537-07
YFM 225 /DX
YTM 225 DR/DX

 

1986-1988
1983-1986

 

STD

50-538

51-538

.25MM

 50-538-04

 .50MM

 50-538-05

.75MM

 50-538-06

1.00MM

 50-538-07
51-538-04
51-538-05
51-538-06
51-538-07
YFB 250
YFM 250