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Wiseco Pistons are 20% off and we will ship your Wiseco piston kit
free to anywhere in the continental USA.
Big Bore kits, Wiseco Harley Davidson and all Wiseco street bike pistons also available.
Click here to buy Wiseco pistons now in our Online Store

Wiseco Pistons Applications

Cobra,LEM,Action, KTM 50cc-65cc
Honda Wiseco
Husqvarna Wiseco
Kawasaki Wiseco
KTM Wiseco
Suzuki Wiseco
Yamaha Wiseco

Wiseco Pistons: Honda 2 Stroke Dirt bike
arrow down for 4 Stroke wiseco Pistons

Model Displ.
(cc)
Bore
size
mm
Over
Size
inches
Wiseco
Kit
Part #
List Price Our Price  
CR80R
1980-82
TC80, 1970-78
79.7 49.5
50
50.25
50.5
51
51.5
STD
.020
.030
.040
.060
.080
450MO4950
450MO5000
450MO5025
450MO5050
450MO5100
450MO5150
$75.35
$75.35
$75.35
$75.35
$82.87
$82.87
$60.00
$60.00
$60.00
$60.00
$66.00
$66.00
Add one to basket.

CR80R 1983

79.7

49.5
50
50.5
51
51.5

STD
.020
.040
.060
.080

493MO4950
493MO5000
493MO5050
493MO5100
493MO5150

$75.35
$75.35
$75.35
$82.87
$82.87

$60.00
$60.00
$60.00
$66.00
$66.00

Add one to basket.
CR80R 1984,
ATAC
Lead 80
79.7 49.5
50
50.5
51
51.5
STD
.020
.040
.060
.080
509MO4950
509MO5000
509MO5050
509MO5100
509MO5150
$75.35
$75.35
$75.35
$82.87
$82.87
$60.00
$60.00
$60.00
$66.00
$66.00
Add one to basket.
CR80R
1985
82.9 47
47.5
47.75
48
48.25
48.5
49
STD
.020
.030
.040
.050
.060
.080
517MO4700
517MO4750
517MO4775
517MO4800
517MO4825
517MO4850
517MO4900
$75.35
$75.35
$75.35
$75.35
$75.35
$82.87
$82.87
$60.00
$60.00
$60.00
$60.00
$60.00
$66.00
$66.00
Add one to basket.

CR80, 1986-2002
International bore only US models use 47mm

79.4

46

STD

668MO4600

$79.29

$63.50

Add one to basket.

CR80, 1986-2002
PRO-LITE,Nikasil
bore. Cylinder sleeving required for oversizes

82.9

85

47
47.25
47.5
47.75
48
49

STD
.010
.020
.030
.040
.080

643MO4700
643MO4725
643MO4750
643MO4775
643MO4800
643MO4900

$74.26
$74.26
$74.26
$74.26
$81.68
$81.68

$59.50
$59.50
$59.50
$59.50
$65.00
$65.00

Add one to basket.
47.25mm and 47.75mm were discontinued in 2006

CR80, 1986-2002
GP style Electra coated

82.9

90.1

47
49

STD

.080

798MO4700
798MO4900

$77.97
$85.77

$62.00
$68.50

Add one to basket.

CR85, 2003-2004
PRO-LITE,Nikasil
bore. Cylinder sleeving required for oversizes

85
92
96

47.5
48 48.5 49.5 50.5

STD
0.50mm 1.00mm 2mm 3mm

833M04750
833M04800 833M04850 833M04950 833M05050

$70.89
$70.89
$77.96
$77.96
$89.66

$57.00
$62.00
$72.00

Add one to basket.

CR85, 2003-2004
GP style Electra coated

85

47.5

STD

838M04750

$81.87

$65.50

Add one to basket.

CR80 93-03 CR85
2003-04
CR101 Big Bore
Cylinder work and head modification required

101.5

52

 

766M05200

$109.78

$88.00

Add one to basket.
125MT, CR125
1973-78
123 56
56.5
57
57.5
58
STD
.020
.040
.060
.080
339MO5600
339MO5650
339MO5700
339MO5750
339MO5800
$119.61
$119.61
$119.61
$131.58
$131.58
$96.00
$96.00
$96.00
$105.00
$105.00
Add one to basket.
CR125, 1979
Chrome bore. Cylinder sleeving required for oversizes
123 56
56.25
56.5
56.75
57
57.5
STD
.010
.020
.030
.040
.060
430MO5600
448MO5625
448MO5650
448MO5675
448MO5700
448MO5750
$119.61
$119.61
$119.61
$119.61
$131.58
$131.58
$96.00
$96.00
$96.00
$96.00
$105.00
$105.00
Add one to basket.
CR125, ATAC
1980-84
120 55.5
55.75
56
56.25
56.5
56.75
57
57.5
STD
.010
.020
.030
.040
.050
.060
.080
448MO5550
448MO5575
448MO5600
448MO5625
448MO5650
448MO5675
448MO5700
448MO5750
$119.61
$119.61
$119.61
$119.61
$119.61
$131.58
$131.58
$131.58
$96.00
$96.00
$96.00
$96.00
$96.00
$105.00
$105.00
$105.00
Add one to basket.
CR125, 1985-86
Pro - Lite
124 54
54.25
54.5
54.75
55
55.25
55.5
56
STD
.010
.020
.030
.040
.050
.060
.080
518MO5400
518MO5425
518MO5450
518MO5475
518MO5500
518MO5525
518MO5550
518MO5600
$95.67
$95.67
$95.67
$95.67
$95.67
$105.24
$105.24
$105.24
$76.50
$76.50
$76.50
$76.50
$76.50
$84.00
$84.00
$84.00
Add one to basket.

CR125, 1987
PRO.LITE

124

54
54.25
54.5
54.75
55
55.25
55.5
56

STD
.010
.020
.030
.040
.050
.060
.080

553MO5400
553MO5425
553MO5450
553MO5475
553MO5500
553MO5525
553MO5550
553MO5600

$100.16
$100.16
$100.16

$100.16
$100.16
$110.18

$110.18
$110.18

$80.00
$80.00
$80.00
$80.00
$80.00
$88.00
$88.00
$88.00

Add one to basket.
CR125RJ
1988-89
PRO-LITE

1989 has a Nikasil Bore and cylinder sleeving is required for oversizes
124 54
54.25
54.5
54.75
55
55.25
55.5
56
STD
.010
.020
.030
.040
.050
.060
.080
564MO5400
564MO5425
564MO5450
564MO5475
564MO5500
564MO5525
564MO5550
564MO5600
$100.16
$100.16
$100.16

$100.16
$100.16
$110.18

$110.18
$110.18
$80.00
$80.00
$80.00
$80.00
$80.00
$88.00
$88.00
$88.00
Add one to basket.
CR125, 1990-91
PRO-LITE
Nikasil Bore
124 54
54.5
55
STD
.020
.040
595MO5400
595MO5450
595MO5500
$100.16
$100.16
$100.16
$88.00
$88.00
$88.00
Add one to basket.

CR125, 1992-2003
PRO-LITE
Nikasil Bore

124

54
54.5
55
56

STD
.020
.040
.080

676MO5400
676MO5450
676MO5500
676MO5600

$99.21
$99.21
$99.21
$103.94

$79.00
$79.00
$79.00
$83.00

Add one to basket.
CR125
1995-2003
no intake window, pinned on centerline, longer skirt
GP style Electra coated
124
134
54
56
STD
.080"
762MO5400
762M05600
$114.00
$125.40
$91.00
$100.00
Add one to basket.

CR125 2004
PRO-LITE
Nikasil Bore

125

134

54

56

STD

.080

840M05400 840M05600

$92.82
$102.10

$74.00
$82.00

Add one to basket.

CR125 2004
PRO-LITE
GP style Electra coated

125

134

54
56
57

STD
.080
.120

841M05400 841M05600 841M05700

$110.68
$121.75
$121.75

$88.50
$97.50
$97.50

Add one to basket.a

CR125 2005-06
PRO-LITE
Nikasil Bore

125

54

STD

859M05400

$92.82

$74.00

Add one to basket.

250 MT, CR, MR
1973-74 (Piston pin not included)

248

70
70.5
71
71.5
72

STD
.020
.040
.060
.080

337MO7000
337MO7050
337MO7100
337MO7150
337MO7200

$128.69
$128.69
$128.69

$141.56
$141.56

$103.00
$103.00
$103.00
$113.00
$113.00

Add one to basket.

250 MT, CR, MR
1975-77

248

70
70.5
71
71.5
72

STD
.020
.040
.060
.080

338MO7000
338MO7050
338MO7100
338MO7150
338MO7200

$128.69
$128.69
$128.69

$141.56
$141.56

$103.00
$103.00
$103.00
$113.00
$113.00

Add one to basket.
CR250R
1978-80
Chrome bore. Cylinder sleeving required for oversizes
248 70
70.25
70.5
70.75
71
71.25
71.5
72
STD
.010
.020
.030
.040
.050
.060
.080
431MO7000
431MO7025
431MO7050
431MO7075
431MO7100
431MO7125
431MO7150
431MO7200
$130.25
$130.25
$130.25
$130.25
$130.25
$143.29
$143.29
$143.29
$104.00
$104.00
$104.00
$104.00
$104.00
$115.00
$115.00
$115.00
Add one to basket.
CR250R
1981-83
246 66
66.25
66.5
66.75
67
67.5
68
STD
.010
.020
.030
.040
.060
.080
466MO6600
466MO6625
466MO6650
466MO6675
466MO6700
466MO6750
466MO6800
$124.33
$124.33
$124.33
$124.33
$124.33
$136.77
$136.77
$99.00
$99.00
$99.00
$99.00
$99.00
$109.00
$109.00
Add one to basket.
CR250, ATAC
1984-85
PRO-LITE
246





261

66
66.25
66.5
66.75
67
67.25
67.5
68
STD
.010
.020
.030
.040
.050
.060
.080
526MO6600
526MO6625
526MO6650
526MO6675
526MO6700
526MO6725
526MO6750
526MO6800
$130.63
$130.63
$130.63
$130.63
$130.63
$143.68
$143.68
$143.68
$104.00
$104.00
$104.00
$104.00
$104.00
$115.00
$115.00
$115.00
Add one to basket.
CR250
1986-96
PRO-LITE
Nikasil Bore and cylinder sleeving is required
249 66.4
67
67.5
68
68.5
STD
.024
.044
.065
.085
614MO6640
614MO6700
614MO6750
614MO6800
614MO6850
$130.73
$130.73
$130.73
$143.80
$143.80
$104.00
$104.00
$104.00
$115.00
$115.00
Add one to basket.
CR250
1997-2001
PRO-LITE
249 66.4
67
67.5
68
68.5

STD
.024
.044
.065
.085

702MO6640
702MO6700
702MO6750
702MO6800
702MO6850

$126.91
$126.91
$126.91
$139.61
$139.61

$102.00
$102.00
$102.00
$112.00
$112.00

Add one to basket.

CR250
2002-04
PRO-LITE

249 66.4
67
67.5
68.5

STD
.024
.044
.085

801MO6640 801MO6700
801MO6750
801MO6850

$126.91
$126.91
$139.61
$139.61

$102.00
$102.00
$112.00
$112.00

Add one to basket.

CR250
2002-04
Electra coated single ring

249 66.4

STD

802MO6640

$146.06

$117.00

Add one to basket.

CR250
2005-06
Electra coated single ring

249 66.4

STD

860MO6640

$146.06

$117.00

Add one to basket.

CR500,
1984-1989
CR480R
1982-83
PRO-LITE

491

89
89.5
90
90.5
91

STD
.020
.040
.060
.080

554MO8900
554MO8950
554MO9000
554MO9050
554MO9100

$157.06
$157.06
$157.06
$172.77
$172.77
$126.00
$126.00
$126.00
$138.00
$138.00
Add one to basket.

CR500,
1990-2001
PRO-LITE

491

89
89.5
90
90.5
91

STD

.020

.040
.060
.080

636MO8900
636MO8950
636MO9000
636MO9050
636MO9100

$157.06
$157.06
$157.06
$172.77
$172.77

$126.00
$126.00
$126.00
$138.00
$138.00

Add one to basket.

Wiseco Pistons: Honda 4 Stroke Dirt bike

Model Bore
x
Stroke
(mm)
Displ.
(cc)
Bore
size
mm
Wiseco
Kit
Part #
List Price Our Price  
Z50R 1982-1987
11:1 Compression
39
x
41.4
49.5 39
39.5
40
40.5
41
4828MO3900
4828MO3950
4828MO4000
4828MO4050
4828MO4100
$68.67
$68.67
$68.67
$75.54
$75.54
$55.00 $55.00 $55.00 $60.50 $60.50 Add one to basket.
XR50 1988-2003 CRF50 2004-2006
11:1 Compression
39
x
41.4
49.5 39
39.5
40
40.5
41
4798MO3900
4798MO3950
4798MO4000
4798MO4050
4798MO4100
$68.67
$68.67
$68.67
$75.54
$75.54
$55.00 $55.00 $55.00 $60.50 $60.50 Add one to basket.
XR50 1988-2003 CRF50 2004-2006
10.5:1 Compression
Will not fit OEM cylinder
39
x
41.4
81
88
50
52
4885M05000
4885M05200
$90.65
$90.65
$72.50 $72.50 Add one to basket.
XR50 1988-2003 CRF50 2004-2006
13:1 Compression
Will not fit OEM cylinder
39
x
41.4
81
88
50
52
4886M05000
4886M05200
$99.71
$99.71
$80.00 $80.00 Add one to basket.
XR70 1997-2003 CRF70 2004-2006
10.5:1 Compression
47
x
41.4
72
73
75
76
78
47
47.5
48
48.5
49
4880M4700
4880M4750
4880M4800
4880M4850
4880M4900
$83.09
$83.09
$83.09
$91.39
$91.39
$66.50
$66.50
$66.50
$73.00
$73.00
Add one to basket.
XR80,
1979-2003 CRF80 2004-2006
9.7:1 Compression
47.5
x
45
79.7 48
48.5
49
49.5
4665MO4800
4665MO4850
4665MO4900
4665MO4950
$92.82
$92.82
$102.10
$102.10
$74.00 $74.00 $82.00 $82.00 Add one to basket.
XR100,
1985-2003
9.4:1 Compression
53
x
45
99.2 53.5
54
54.5
55
4666MO5350
4666MO5400
4666MO5450
4666MO5500
$92.82
$92.82
$102.10
$102.10
$74.00 $74.00 $82.00 $82.00 Add one to basket.
XR100, (120cc) 58mm Big Bore
1985-2003
12:1 Compression Big bore sleeve required
58
x
45
120 58 4773M05800 $107.21 $86.00 Add one to basket.

XR200 up to 1983,
XR185 (+ .100) 1986-2003

10:1 Compression

65.5
x
57.8

192

65.5
66
66.5
67

4156MO6550
4156MO6600
4156MO6650
4156M06700

$111.69
$111.69
$122.85
$122.85

$89.00 $89.00 $98.00 $98.00

Add one to basket.
CRF230F 2003-2006
11-1 Compression
65.5
x
66.2
223 65.5 4816M06550 $168.00 134.00 Add one to basket.
XL250,
1979-82
XR250,
thru 1983
10:1 Compression
74
x
57.8
248 74
74.5
75
75.5
76
4171MO7400
4171MO7450
4171MO7500
4171MO7550
4171MO7600
$130.25
$130.25
$130.25
$143.29
$143.29
$104.00 $104.00 $104.00 $115.00 $115.00 Add one to basket.
XL250 1984-85 XR250 1984-87
Radial head
10.5:1 Compression
75
x
56.5
250 75
75.5
76
4329MO7500
4329MO7550
4329MO7600

$133.85
$133.85
$133.85

$107.00
$107.00
$107.00
Add one to basket.

XR250R,
1986-2004
XRL250,
1991-96
10.5:1 Compression

73
x
59.5

250



284

73
73.5
74
75.5
77
78

4466MO7300
4466MO7350
4466MO7400
4466MO7550
4466MO7700
4466MO7800

$136.45
$136.45
$136.45
$150.12
$150.12
$150.12
$109.00 $109.00 $109.00 $120.00 $120.00 $120.00 Add one to basket.
CRF250R,
CFR250X 2004-2006
12.9:1 Stock Compression Coated skirt
78
x
52.5
249 78 4829M07800 $149.63 $120.00 Add one to basket.
CRF250R,
CFR250X 2004-2006
13.5:1 High Ciompression
Coated skirt
78
x
52.5
249 78 4852M07800 $187.25 $150.00 Add one to basket.
XR350,
1983-84
Radial head
10:1 Compression
84
x
61.3
339 84
84.5
85
4286MO8400
4286MO8450
4286MO8500
$127.76
$127.76
$127.76
$102.00
$102.00
$102.00
Add one to basket.
XR400,
1996-2004
10:1 Compression
85
x
70
397
407
416
426
85
86
87
88
4606MO8500
4606MO8600
4606MO8700
4606MO8800
$131.60
$131.60
$144.76
$144.76
$105.00 $105.00 $116.00 $116.00 Add one to basket.

XR400,
1996-2004
11:1 Compression

85
x
70

397
407
416
426

85
86
87
88

4628MO8500
4628MO8600
4628MO8700
4628MO8800

$146.16
$146.16
$160.78
$160.78

$117.00 $117.00 $112.00 $129.00 Add one to basket.

XR400,
1996-2004
440 big bore
11:1 Compression

85
x
70

435

89

4667M08900

$151.84

$121.50 Add one to basket.

XR400,
1996-2004
440 big bore
12.5:1 Compression

85
x
70

435

89

4794M08900

$150.55

$120.00 Add one to basket.
CRF450R 02-06
11.5:1 standard compression for 2002 and 2003 Coated skirt
96 * 62.1

450

96

4753M09600

$150.76

$120.00

Add one to basket.
CRF450R 02-06
12:1 standard compression for 2004
Coated skirt
96 * 62.1

450

96

4820M09600

$163.28

$130.00

Add one to basket.
CRF450R 02-06 12.5:1 compression
cylinder work required for98 and 99mm Coated skirt
96 * 62.1

450
468

478

96
98

99

4755M09600
4755M09800
4755M09900

175.88
193.46
193.46

$141.00
$155.00
$155.00

Add one to basket.
CRF450R 02-06
13:1 Hi-compression
96 * 62.1

450

96

4822M09600

$193.46

$155.00

Add one to basket.
CRF450R 02-06
13.5:1 Hi-compression Coated skirt
96 * 62.1

450

96

4823M09600

$213.10

$170.00

Add one to basket.
CRF450R 02-06 500cc Big Bore 12.5:1 compression cylinder work required Coated skirt 101 * 62.1 498 101 4780M10100 $195.98 $157.00 Add one to basket.
CRF450R 02-06 500cc Big Bore Heavy duty 12.5:1 compression cylinder work required Coated skirt 101 * 62.1 498 101 4890M10100 $202.90 $162.00 Add one to basket.
XR, XL500,
1979-82
FT500,
1982-84
10:1 Compression
89
x
80
497
503
509
520
567
89
89.5
90
90.93
95
4117MO8900
4117MO8950
4117MO9000
4117MO9093
4117MO9500
$159.75
$159.75
$159.75
$175.72
$175.72
$128.00 $128.00 $128.00 $141.00 $141.00 Add one to basket.
XR, XL500,
1979-82
FT500,
1982-84
12:1 Compression
89
x
80
497



509
89
89.5
90
4163MO8900
4163MO8950
4163MO9000
$169.26
$169.26
$169.26
$135.00 Add one to basket.
XR500,
Radial head
1983-84
10.25:1 Compression
92
x
75
498 92
92.5
93
4330MO9200
4330MO9250
4330MO9300
$169.26
$169.26
$169.26
$135.000 Add one to basket.

XL600,
1983-87
Radial head
11:1 Compression

100
x
75

589

440

100
101
102.4

4332M10000
4332M10100
4332M10240

$155.28
$155.28
$155.28
$124.00 $124.00 $124.00 Add one to basket.
XR600,
XR600R
1985-2003,
11:1 Compression
97
x
80
591


628
97
97.5
98
100
4366MO9700
4366MO9750
4366MO9800
4366MO10000
$165.21
$165.21
$165.21
$181.73
$132.00 $132.00 $132.00 $145.00 Add one to basket.
XR600,
XR600R
1985-2003,
9:1 Compression
97
x
80
591


628
97
97.5
98
100
4577MO9700
4577MO9750
4577MO9800
4577M010000
$160.40
$160.40
$160.40
$176.44
$128.00 $128.00 $128.00 $141.00 Add one to basket.

NX, XR650C,
1993-99
XR650L,
1996-98
Dominator
10.25:1 Compression

100
x
82

650

675

100
101
102.4

4562M10000
4562M10100
4562M10241

$160.40
$160.40
$176.44
$128.00 $128.00 $141.00 Add one to basket.

XR650R 2000-03 10.1 stock compression

100
x
82.6

649

680

100

102.4

4715M10000 4715M10240

$160.40
$176.44
$128.00 $141.00 Add one to basket.

XR650R 2000-03 11.1 compression

100
x
82.6

649

680

100

102.4

4716M10000 4716M10240

$172.72
$189.99
$138.00 $151.00 Add one to basket.