ORO2U Dirt Catalogue - Section E - Engine and Performance.

Wossner

Piston Kits

GASGAS 4-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

TXT 300

All Years 79mm 2010 - 15 77mm 2010 - 15 77mm 2021 - 23 78mm 2021 - 23 78mm 2021 - 23 78mm 2021 - 23 78mm 2013 - 15 83mm 2021 - 23 88mm 2024 - 25 88mm 2021 - 23 88mm 2022 - 23 88mm 2024 - 25 88mm 2022 - 23 88mm 2022 - 23 88mm 2024 - 25 88mm

.WO .WO .WO

.WO .WO

– – – – – – – – – – – – – – – – – – – – – – – – – – –

56-W180 56-W189 56-W188 56-W954

56-R389 56-R407

56-7924 56-7931

56-0153 56-0152

EC 250F 3-Ring

.WO .WO

2-Ring

.WO .WO

56-R407 56-R323

56-7931 56-7981

56-0152 56-0152

EC 250F Comp 14.23

.A.WO

.WO

Comp 14.50

56-W955.A.WO

.WO .WO

56-R323 56-R323

56-7981 56-7981

56-0152 56-0152

MC/EX 250F Comp 14.4

.A.WO

56-W265 56-W265 56-W912

Comp 14.6

.A.WO.HC

.WO .WO

56-R323 56-R309

56-7981 56-7931

56-0152 56-0152

EC 300F EC 350F ES 350F

.WO

.A.WO .A.WO

.WO .WO

56-W8822 56-W8834 56-W4735 56-W4736 56-W8834 56-W4735 56-W4736 56-W8834

56-R333 56-R333

56-7984 56-7984

56-0153 56-0153

EX 350F Comp 14.2

+00A.WO +00A.WO

.WO .WO

56-R333 56-R333

56-7984 56-7984

56-0153 56-0153

Comp 15.20

EX 350F

.A.WO

.WO .WO

56-R333 56-R333

56-7984 56-7984

56-0153 56-0153

MC 350F Comp 14.20

+00A.WO +00A.WO

Comp 15.20

.WO .WO

56-R333 56-R333

56-7984 56-7984

56-0153 56-0153

MC 350F EC 450F EC 450F

.A.WO

2005

95mm

.WO

.WO .WO

56-W220 56-W221 56-W222 56-W223

56-R305 56-R328

56-7927 56-7927

56-0155 56-0155

2006 - 12 97mm 2013 - 15 95mm 2013 - 15 95mm 2003 - 04 95mm 2006 - 09 97mm 2021 - 23 95mm 2021 - 23 95mm 2005 - 06 95mm 2007 - 09 97mm

.A.WO

EC 450F Comp. 12.3:1

.WO .WO .WO .WO

.WO

.WO .WO

56-R554

56-7973 56-7973

56-0153 56-0153

High Comp. 13.5:1

.WO .WO

56-R554 56-R305

HP / EC / FSE 450 HP / EC / FSE 450

.WO .WO

56-W025 56-W221 56-W956 56-W956 56-W220 56-W221 56-W242

56-7927 56-7927

56-0155 56-0155 56-0154 56-0154

56-R307 56-R329

MC/EX 450F Comp. 12.60

.A.WO

.WO .WO

56-7982 56-7982

Comp. 13.60

.A.WO.HC

56-R329 56-R305

SMR 450 SMR 450

.WO .WO .WO

.WO

.WO .WO .WO

56-7927 56-7927 56-7927

56-0155 56-0155 56-0155

56-R307 56-R501

SM 515

2009

100mm

.WO

HONDA 2-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

CR 80 CR 80

1980 - 82 49.5mm

.WO

– –

.WO .WO

.WO .WO .WO

.WO .WO

56-W450 56-W493 56-W041 56-W643 56-W833 56-W339 56-W430 56-W448 56-W563 56-W553 56-W564 56-W595 56-W613 56-W676 56-W840 56-W859 56-W903 56-W905 56-W337 56-W338 56-W431 56-W466 56-W526 56-W614 56-W703 56-W702 56-W801 56-W134 56-W860 56-W130 56-W554

56-709 56-709 56-7930 56-7930 56-7930 56-786 56-786 56-786 56-786 56-786 56-783 56-783 56-783 56-783 56-783

56-005 56-005 56-006 56-0150 56-0150 56-0150 56-0150 56-0150 56-0150 56-0150 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0152 56-0152 56-0153 56-0153 56-0153 56-0153 56-0153

56-811 56-811 56-7995 56-7995 56-7995 56-813 56-813 56-813 56-823 56-813 56-814 56-814 56-814 56-814 56-814

1983

49.5mm

+000.WO

CR 80 International Bore

1986 - 02 46mm 1992 - 02 47mm 2003 - 07 47.5mm 1973 - 78 56mm

.WO

.WO .WO

.WO .WO .WO

56-R556 56-R905 56-R352 56-R365 56-R365 56-R006 56-R421 56-R405 56-R405 56-R405 56-R405 56-R405 56-R405 56-R405 56-R365 56-R365

US Bore

.A.WO .A.WO

CR 85 CR 125 CR 125 CR 125 CR 125 CR 125 CR 125 CR 125 CR 125 CR 125 CR 125 CR 125

+0.00.WO +P0.WO +P0.WO +000.WO

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

1979

56mm

1980 - 84 55.5mm 1985 - 86 54mm

.WO

1987

54mm

+0.WO

+P0.1.WO +P0.1.WO +P0.1.WO +P0.1.WO +P0.1.WO +P0.1.WO +P0.1.WO

1988 - 89 54mm 1990 - 91 54mm 1992 - 99 54mm 2000 - 03 54mm

+P0.WO +00A.WO

.A.WO .A.WO

2004

54mm

+00A.WO

2005 - 07 54mm 1983 - 87 56mm 1988 - 99 56mm 1973 - 74 70mm 1975 - 77 70mm 1978 - 80 70mm 1981 - 83 66mm 1984 - 85 66mm 1986 - 96 66.4mm 1997 - 01 66.4mm 1997 - 01 66.4mm 2002 - 04 66.4mm 2005 - 07 66.4mm 2005 - 07 66.4mm

.A.WO

56-783

56-814

MBX / MTX 125 MTX 125 Rally

+000.WO

.WO.41 .WO.41

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

– –

56-7925 56-7925 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924

CR 250 CR 250 CR 250 CR 250 CR 250 CR 250

+00A.WO

.WO .WO .WO .WO .WO

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

56-R487 56-R487 56-R487 56-R480 56-R480 56-R420 56-R420 56-R420

56-801 56-801 56-801 56-801 56-801 56-801 56-801 56-801 56-801 56-801 56-801

+P0.WO +P0.WO .P0.WO

.A.W

.2.WO .1.WO .2.WO .2.WO

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

CR 250 Single ring

+00A.WO

.WO .WO .WO .WO .WO

56-7924 56-7924 56-7924 56-7924 56-7924 56-731 56-789

2-Ring

.A.WO

CR 250 2-Ring

+00A.WO +00A.WO +00A.WO

56-R420 56-R420 56-R420 56-R480

CR 250 Single ring

.1.WO .2.WO

56-0153 56-0153 56-0154 56-0155

2-Ring

+00A.WO **

CRM 250

All

66mm

.WO .WO

–

CR 500

1984 - 01 89mm

+000.WO

.WO

56-R430

56-828

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!

.WO This piston comes with a 19mm Gudgeon Pin.

56-W130

*Please visit our website for current prices E31

E-mail: sales@oro2u.com

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