ORO2U Dirt Catalogue - Section E - Engine and Performance.

Wossner

Piston Kits

TM 2-Stroke Models

Years

Size

Piston Kit 56-W4957

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

2008 - 23 47.85mm 1992 - 23 54mm

85 MX

.A.WO

.WO

– – – – – – – – – – – – – –

56-R386 56-R405

56-7962

56-006

125 Cross / Enduro 125 Cross / Enduro

.A.WO

+P0.1.WO

.WO

56-W016

56-783

56-0151 56-0151

2020

54mm

.A.WO

.WO

56-W8823

56-R408 56-R431

144

2008 - 19 56mm

.A.WO .A.WO .A.WO

.WO

56-W228 56-W021 56-W020

56-783

56-0151 56-0153 56-0153

250 Cross / Enduro Domed (1-Ring) 1999 - 19 66.4mm

.1.WO .2.WO

.WO .WO

.WO .WO

56-R420 56-R420 56-R420

56-7924 56-7924

Domed (2-Ring) 1999 - 19 66.4mm

2020 - 23 66.4mm 1997 - 01 72mm 2008 - 09 72mm 2008 - 09 72mm 1997 - 01 72mm 2002 - 19 72mm 2002 - 19 72mm 2020 - 23 72mm

.WO .WO .WO .WO .WO .WO .WO

.WO .WO .WO .WO .WO .WO .WO .WO

250 MX/EN 300 Cross

.A.WO

.1.WO x2

56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924

56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153

56-W8818

.00A

56-W158 56-W032

56-R372 56-R372 56-R101 56-R372 56-R372 56-R101 56-R372

.A.WO

300 Cross Exhaust Bar (1-Ring)

.00B.WO

.WO

56-W9920

Exhaust Bar (2-Ring)

300 Enduro

.00A

56-W158 56-W032

.A.WO

300 Enduro Exhaust Bar (1-Ring)

.00B.WO

.WO

56-W9920 56-W8819

Exhaust Bar (2-Ring)

300 MX/EN

.A.WO

56-785

4-Stroke Models 250F Cross / Enduro

Years

Size

Piston Kit

Piston Rings 56-R553.WO

Piston Pin

Piston Clips

Small End Bearing

2007 - 10 77mm

.WO.A .A.WO

.WO .WO .WO

.WO .WO .WO

– – – – – – – – –

56-W033 56-W044

56-7931 56-7931 56-7931 56-7926 56-7926 56-7926 56-7926 56-7926 56-7926

56-0152 56-0152 56-0152 56-0154 56-0154 56-0154 56-0154 56-0154 56-0154

250F Cross / Enduro (Fuel Injection)

2010

77mm

.WO .WO

56-R407 56-R407

2011 - 12 77mm

.A.WO

MX / EN 250F (Fuel Injection)

56-W4958

450F Cross / Enduro 450F Cross / Enduro

2004

95mm

.A.WO .WO.A

.WO .WO

56-W026 56-W038

56-R554 56-R554

2005 - 08 95mm 2009 - 11 95mm 2011 - 20 95mm 2011 - 20 95mm 2003 - 12 98mm

MX 450F MX 450Fi EN 450Fi

.A.WO .A.WO .A.WO

.WO .WO

56-W4960 56-W4960 56-W4960

56-R554 56-R554

.WO .WO

56-R554 56-R555

530 Cross / Enduro

56-W034.WO.A

VOR 4-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

VOR 450 VOR 503 VOR 530

2004 - 07 97mm 2000 - 02 95mm

56-W062.A.WO

.WO .WO .WO

.WO .WO .WO

– – –

56-R307 56-R305 56-R307

56-7927 56-7927 56-7927

56-0155 56-0155 56-0155

.A

.WO

56-W060

2002 - 07 97mm 56-W061

YAMAHA 2-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

1981 - 23 40mm 2018 - 23 43.5mm 1983 - 06 47mm 1976 - 80 49mm

PW 50 YZ 65 PW 80 YZ 80 YZ 80 YZ 80 YZ 80 YZ 80 YZ 80

+000_WO

.WO .WO

.WO

.WO .WO .WO .WO .WO .WO .WO .WO .WO

56-W938

56-R573 56-R317

56-7979

56-011 56-005 56-005 56-005 56-005 56-005 56-005 56-005 56-005 56-0150 56-0150 56-0150 56-0151 56-0152 56-0152 56-0152 56-0152 56-0152 56-0152

.A.WO

.WO

56-W9991

56-709

+000.WO +000.WO +000.WO +000.WO +000.WO +000.WO +000.WO +0.00.WO +00A.WO

.WO .WO .WO .WO .WO .WO .WO .WO .WO

.WO .WO

56-W939 56-W457 56-W465 56-W477 56-W508 56-W520 56-W569 56-W671 56-W646 56-W805

56-R905 56-R527 56-R527 56-R905 56-R386 56-R386 56-R386 56-R556 56-R905 56-R352 56-R580 56-R365 56-R365 56-R365 56-R365 56-R432 56-R431

56-7903 56-709 56-709 56-709 56-709 56-709 56-709 56-7930 56-7930 56-7930 56-7925 56-7925 56-7925 56-7925 56-7925 56-7925

56-827 56-827 56-7992 56-7992 56-811 56-811 56-811 56-7995 56-7995 56-7995 56-836 56-806 56-806 56-806 56-820 56-820 56-820

.WO .WO .WO .WO .WO .WO

1981

49mm

.WO .WO

1982 - 83 47mm

1984

48mm

.WO .WO .WO

1985 - 87 48mm 1988 - 92 48mm 1993 - 01 46mm 1993 - 01 47mm 2002 - 23 47.5mm 1982 - 83 50mm 1975 - 82 56mm 1986 - 06 56mm 1992 - 98 56mm 1976 - 82 56mm

YZ 80 International Bore

.WO .WO .WO

.WO .WO .WO

US Bore

YZ 85

.A.WO

YZ 100

.A.WO

.WO

.WO .WO .WO * .WO .WO .WO .WO

56-W4771

DT 125E/F/MX/LC

.000

.WO.41 .WO.41 .WO.41 .WO.41 .WO.41 .WO.41

.WO .WO .WO .WO .WO .WO

56-W253 56-W224 56-W252 56-W435 56-W503 56-W512

DT 125R/E/X TZR / TDR 125

.000.WO

.000A

YZ 125 YZ 125 YZ 125

+00A.WO +050.WO +000.WO

1983 1984

56.5mm

56mm

*

Will only fit Wossner pistons (Applying to

piston only)

56-806

56-W224

Please Note Wossner Piston rings will NOT run in chrome bores!

Please note All Piston Kits do not include small end bearings. Most Kits available from standard size up to 2.00mm over size.

*Please visit our website for current prices

E-mail: sales@oro2u.com

www.oro2u.com E43

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