Piston Kits
Wossner
Wossner Piston Kits Wossner Pistons, Germany’s finest aftermarket forged piston and rod manufacturer.
With over 25 years of custom piston and rod manufacturing, Wossner Pistons is deeply committed to bringing to market only the best and most accurately machined forged pistons and rods available. Wossner Pistons commitment to quality stems from designing racing components for top European racing teams in all types of venues to supplying the weekend racer a hop-up high compression piston, or a big bore piston to take advantage of today’s high revving high horsepower engines in both automotive and motorcycle applications.With unsurpassed quality and a commitment, Wossner Pistons will always listen to the customer as this assures you will always receive the high quality forged CNC machined components you would expect from today’s top European piston and rod manufacturer. Wossner Pistons believes in continued research and development so that the end user is guaranteed to receive the highest quality machined forged piston. Wossner Pistons engineers & manufactures 2-stroke and 4-stroke motorcycle, automotive, snowmobile pistons in various bore sizes and compression ratios.
YAMAHA 2-Stroke Models
Years
Size
Piston Kit
Piston Rings
Piston Pin
Piston Clips
Small End Bearing
YZ 125 YZ 125 YZ 125 YZ 125 YZ 125 YZ 125 YZ 125 YZ 125 YZ 125 YZ 125
1985
56.5mm
56-W503+050.WO 56-W559+000.WO 56-W582+00A.WO 56-W629+00A.WO 56-W647+00A.WO 56-W693.A.WO 56-W726.A.WO 56-W797.A.WO 56-W845.A.WO 56-W899.A.WO 56-W845.A.WO 56-W899.A.WO 56-W254.000.WO 56-W375+0.50.WO 56-W374.000.WO
56-R432 56-R431 56-R431 56-R431
56-7925.WO.41 56-7925.WO.41 56-7925.WO.41 56-7925.WO.41
56-0152.WO 56-820.WO 56-0152.WO 56-820.WO 56-0152.WO 56-820.WO 56-0152.WO 56-820.WO 56-0152.WO 56-820.WO
1986 - 88 56mm
1989
56mm
1990 - 93 56mm 1994 - 96 54mm
56-R405+P0.1.WO 56-7925.WO.41 56-R405+P0.1.WO 56-783.WO 56-R405+P0.1.WO 56-783.WO 56-R405+P0.1.WO 56-783.WO 56-R405+P0.1.WO 56-783.WO 56-R405+P0.1.WO x2 56-783.WO 56-R405+P0.1.WO 56-783.WO 56-R405+P0.1.WO x2 56-783.WO
1997
54mm
56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151
56-836.WO 56-836.WO* 56-814.WO 56-814.WO 56-814.WO 56-814.WO 56-814.WO
1998 - 01 54mm 2002 - 04 54mm 2005 - 21 54mm 2022 - 23 54mm 2020 - 22 54mm
YZ 125 X YZ 125 X
2023
54mm
DT 175 DT 175
1979 - 81 66mm 1982 - 10 66.5mm 1976 - 81 66mm 1988 - 91 66mm 1984 - 86 66mm 1992 - 98 66.8mm 1974 - 79 70mm 1978 - 80 70mm 1981 - 82 70mm
56-R480.WO
56-7923.WO
56-0152.WO 56-0152.WO 56-0152.WO
– – –
56-R355.WO_1.00 56-7923.WO
IT / YZ 175 DT 200/R
56-R480.WO 56-R480.WO 56-R480.WO 56-R281.WO 56-R487.WO 56-R487.WO 56-R487.WO 56-R500.WO 56-R487.WO 56-R487.WO 56-R500.WO 56-R500.WO 56-R487.WO 56-R487.WO 56-R500.WO 56-R500.WO 56-R500.WO 56-R420.1.WO 56-R420.2.WO 56-R420.1.WO 56-R420.2.WO 56-R355.WO 56-R355.WO 56-R574.WO 56-R574.WO 56-R575.WO 56-R575.WO 56-R574.WO 56-R574.WO 56-R576.WO 56-R576.WO
56-7923.WO 56-7923.WO 56-7923.WO 56-7923.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7923.WO 56-7923.WO
56-W599+000
56-0152.WO 56-806.WO 56-0152.WO 56-832.WO 56-0152.WO 56-806.WO 56-0153.WO 56-801.WO 56-0153.WO 56-801.WO 56-0153.WO 56-801.WO 56-0153.WO 56-809.WO 56-0153.WO 56-801.WO
IT 200
56-W195+00A.WO
WR 200 DT 250
56-W599+080
56-W234+000.WO 56-W234+000.WO 56-W452+000.WO 56-W196+00A.WO 56-W234+000.WO 56-W234+000.WO 56-W605+000.WO
IT 250 IT 250 IT 250
1983
68mm
MC 250 TY 250 WR 250 WR 250 YZ 250 YZ 250 YZ 250 YZ 250 YZ 250
1973 - 75 70mm 1974 - 78 70mm 1988 - 91 68mm 1992 - 99 68mm 1976 - 79 70mm 1980 - 82 70mm 1983 - 87 68mm 1988 - 91 68mm 1992 - 98 68mm 1999 - 23 66.4mm 1999 - 23 66.4mm 1999 - 23 66.4mm 1999 - 23 66.4mm 1973 - 90 64mm 1976 - 82 64mm 1975 - 78 85mm 1975 - 76 85mm 1977 - 78 86mm 1977 - 78 86mm 1981 - 82 85mm 1981 - 82 85mm 1983 - 84 87mm 1982 - 83 87mm 1984 - 90 87mm 1992 - 93 87mm
56-0153.WO
56-0153.WO 56-809.WO 56-0153.WO 56-809.WO 56-0153.WO 56-801.WO 56-0153.WO 56-801.WO 56-0153.WO 56-809.WO 56-0153.WO 56-809.WO 56-0153.WO 56-809.WO 56-0152.WO 56-801.WO 56-0152.WO 56-801.WO 56-0152.WO 56-801.WO 56-0152.WO 56-801.WO 56-0152.WO 56-832.WO 56-0152.WO 56-832.WO 56-0153.WO 56-801.WO 56-0153.WO 56-801.WO 56-0153.WO 56-801.WO
56-W677.WO
56-W234+000.WO 56-W452+000.WO 56-W560+000.WO 56-W605+000.WO 56-W677.A.WO 56-W742.A.WO.1R
YZ 250 1-Ring
2-Ring
56-W742.A.WO
YZ 250 X 1-Ring
56-W742.A.WO.1R
2-Ring
56-W742.A.WO
RD 350 RD 400 DT 400 MX 400 YZ 400 IT 425 IT 465 YZ 465 IT 490 YZ 490 YZ 490 WR 500
56-W513+00A.WO 56-W513+00A.WO
56-W549.A.WO 56-W549.A.WO
56-7948 56-7948 56-7948 56-7948 56-7948 56-7948 56-7948 56-7948 56-7948 56-7948
56-W550_1.00.WO 56-W550_1.00.WO
56-0153.WO
–
56-W551.A.WO 56-W551.A.WO
56-0153.WO 56-809.WO 56-0153.WO 56-809.WO 56-0153.WO 56-809.WO 56-0153.WO 56-809.WO 56-0153.WO 56-809.WO 56-0153.WO 56-809.WO
56-W478+0.00.WO 56-W478+0.00.WO 56-W4815.00.A.WO 56-W4815.00.A.WO
56-R371 56-R371
Please note All Piston Kits do not include small end bearings. Most Kits available from standard size up to 2.00mm over size. Please Note Wossner Piston rings will NOT run in chrome bores!
*Please Note when ordering a small end bearing for a 2001 YZ125, you will need to order Part No. 56-814
*Please visit our website for current prices E34
www.oro2u.com
Tel: 01597 822 666
Fax: 01597 825 224
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