Piston Kits
Wiseco
Wiseco 2-Stroke Piston Kits
Wiseco 4-Stroke Piston Kits
Ideal for Multi Purpose Riding Forged Series • Great Value for all around riding types • Every Day Ride/Race Power You can Feel! • Forged for Optimized Strength and Life • ArmorGlide® Skirt Coating Reduces Friction and Noise for More Horsepower on most applications • Wide Range of Bore and Compression Ratio Options
Endurance / High RPM GP Series™ • Optimized Race Features for Top End Power • Electra-Coated Dome, Ring Groove & Pin Bore for Extended Life • ArmorGlide® Skirt Coating Reduces Friction and Noise for More Horsepower Potential • Upgrade Ti Nitride Ring Package for Lower Coefficient of Friction and Wear
YAMAHA 2-Stroke Models
Years
Piston Type
Size
Piston Kit
Piston Rings
Piston Pin
Piston Clips
Small End Bearing
PW 50 YZ 65 BW 80 PW 80 YZ 80 YZ 80 YZ 80 YZ 80 YZ 80
1985 - 20 2018 - 25 1986 - 90 1991 - 06 1976 - 80 1982 - 83
40mm
+000.WI
–
–
– –
56-W938
56-011 56-005 56-005 56-005 56-005 56-005 56-005 56-005 56-005 56-003 56-003 56-003 56-003 56-003 56-003 56-0152 56-0152 56-0152 56-0152 56-0152 56-0152 56-002 56-002 56-002 56-002 56-002 56-002 56-002 56-002 56-002 56-002
43.5mm
.A.WI
.WI .WI .WI .WI .WI .WI .WI .WI
56-W9991
56-R063 56-R905
56-7914 56-7903 56-7903 56-7903 56-7903 56-7903 56-7903 56-7903 56-708 56-708 56-715 56-708 56-715 56-715
47mm 47mm 49mm 47mm 48mm 48mm 48mm 46mm 47mm
+000.WI +000.WI +000_WI +000_WI +000_WI +000_WI +000_WI +0.00.WI +00A_WI _550.WI **
.WI .WI
.WI .WI .WI
56-W939 56-W939 56-W457 56-W477 56-W508 56-W520 56-W569 56-W671 56-W646 56-W805 56-W805 56-W805 56-W771 56-W435 56-W512 56-W559 56-W582 56-W629 56-W647 56-W693 56-W797
56-827 56-827 56-827 56-7992 56-811 56-811 56-811 56-821 56-821 56-821 56-821 56-821 56-821 56-815 56-815 56-815 56-815 56-815 56-815 56-836 56-836 56-836 56-836 56-814 56-836 56-836 56-814 56-814 56-814 56-814
56-R905 56-R527
.WI.2
.WI
.WI
56-R905 56-R527
1984
.WI.1
.WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI
1985 - 87 1988 - 92
.WI .WI
56-R452 56-R452 56-R401 56-R002 56-R202 56-R525 56-R202 56-R512 56-R405
YZ 80 (International Bore)
1993 - 01 Pro-Lite 1993 - 01 Pro-Lite 1993 - 01 ArmorGlide 2002 - 25 Pro-Lite 2002 - 25 ArmorGlide
US Bore Big Bore
52.5mm 47.5mm 52.5mm
.WI
YZ 85
_000.WI
YZ 85 Big Bore
_550.WI **
.WI .WI
RT 100 YZ 125 YZ 125 YZ 125 YZ 125 YZ 125 YZ 125 YZ 125
1990 - 00 1976 - 82
52mm 56mm 56mm 56mm 56mm 56mm 54mm 54mm
.5200
+00A_WI +000_WI +000_WI +00A_WI +00A_WI +00A_WI
+P8.1
– – – – – –
.WI .WI .WI .WI .WI .WI
1984
–
1986 - 88 Pro-Lite
+P8.1 +P8.1 +P8.1
56-R405 56-R405 56-R405 56-R405 56-R405
Pro-Lite Pro-Lite
1989 1993
1994 - 96 Pro-Lite
+P0.1.WI +P0.1.WI
Pro-Lite
1997
.A_WI
.WI .WI .WI .WI .WI .WI .WI .WI
56-729 56-722 56-722 56-729 56-729 56-722 56-722 56-729 56-722 56-722 56-722 56-722 56-7942 56-7942
1997 - 00 GP /ArmorGlide 54mm 1997 - 00 GP /ArmorGlide 54mm
+P0.1.WI +P0.1.WI
.WI_GP ##
56-R405 56-R405
Flat Top Conversion
.P0.WI.G ##
56-W676 56-W726 56-W726 56-W797 56-W676 56-W797 56-W845 56-W845 56-W899 56-W899 56-W374 56-W374 56-W772 56-W195 56-W452 56-W196
1998 - 00 Pro-Lite
YZ 125 YZ 125
54mm 54mm
_000_WI _000_WI
–
Pro-Lite
2001
2001 - 04 GP /ArmorGlide 54mm 2001 - 04 GP /ArmorGlide 54mm
+P0.1.WI +P0.1.WI
.WI_GP ## .P0.WI.G ##
56-R405 56-R405
Flat Top Conversion
2002 - 04 Pro-Lite 2005 - 21 Pro-Lite
YZ 125 YZ 125
54mm 54mm
.WI.PL
.WI
+P0.1.WI +P0.1.WI
.WI.S668 .WI.S668 .WI.S668 .WI.S668
56-R405 56-R405
2005 - 21 GP /ArmorGlide 54mm
.WI.GP
2022 - 25 2023 - 25 1976 - 81 1976 - 81 1990 - 98 1984 - 86 1981 - 82
YZ 125
54mm 54mm 66mm 66mm
.A.WI .A.WI
+P0.1.WI +P0.1.WI
56-R405 56-R405
56-002 56-002 56-0152 56-0152
YZ 125X IT 175 YZ 175 RT 180 IT 200
56-814
.000_WI .000_WI
.WI .WI
.WI .WI
.WI .WI .WI
56-R489 56-R489 56-R920 56-R489
56-7994 56-7994 56-7994 56-832 56-801 56-809 56-809 56-809 56-801 56-809 56-809 56-809 56-801 56-801
64.5mm
.WI
.WI
.WI .WI .WI .WI
56-787
56-0152 56-0152 56-0153 56-0153
66mm 70mm 68mm 68mm 68mm 70mm 70mm 68mm 68mm
+000.WI +000.WI +00A.WI +000_WI
.WI
.WI .WI .WI .WI .WI .WI .WI .WI .WI .WI .WI
56-7942
IT 250 IT 250
.WI .WI .WI .WI .WI .WI .WI
56-R487 56-R500 56-R500 56-R500 56-R487 56-R500 56-R500
56-724
Pro-Lite Pro-Lite
1983 1991
.WI
56-7905 56-781 56-781
WR 250 WR 250 YZ 250 YZ 250 YZ 250 YZ 250
.WI .WI .WI .WI .WI
56-W605 56-W677 56-W452 56-W560 56-W605 56-W677
56-0153 56-0153 56-0153 56-0153 56-0153
1992 - 98 Pro-Lite
.WI
1980 - 82
+000.WI +000_WI +000_WI
56-724
1983 - 87 Pro-Lite 1988 - 91 Pro-Lite 1992 - 98 Pro-Lite 1999 - 01 Pro-Lite 1999 - 01 ArmorGlide
.WI
56-7905 56-781 56-781 56-781 56-781
.WI .WI
.WI
.WI .WI .WI
56-R500 56-R420 56-R406
56-0153 56-0153 56-0153
YZ 250 Dual Ring
66.4mm
.2.WI
56-W742 56-W844
Big Bore
72mm
_560.WI
.WI
Please note All Piston Kits do not include small end bearings. Most Kits available from standard size up to 2.00mm over size.
** Crankcase clearance required for 50mm and larger bores. ## Piston has no intake window
*Please visit our website for current prices E24
www.oro2u.com
Tel: 01597 822 666
Fax: 01597 825 224
Made with FlippingBook - Online magazine maker