ORO2U Dirt Catalogue - Section E - Engine and Performance.

Wossner

Piston Kits

Wossner Piston Kits 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.

APRILIA 2-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

RS125

1985 - 09 54mm All Years 56mm

.WO .WO

.WO

– –

56-W046 56-W255

56-R421 56-R431

56-783

56-0151 56-0152

RS250 Single Ring

.WO

.WO

56-7925

BETA 2-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

RR 125 Enduro RR 250 Enduro

2018 - 23 54mm 2013 - 17 66.4mm 2018 - 24 66.4mm 2013 - 17 72mm 2018 - 21 72mm 2022 - 23 73mm 2015 - 17 72mm 2018 - 21 72mm

.A.WO

.WO

.WO

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

56-W213

56-R408 56-R420 56-R420 56-R372 56-R372 56-R256 56-R372 56-R372 56-R256

56-783

56-0151 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153

56-800 56-801 56-801 56-802 56-802 56-802 56-802 56-802 56-802

.A.WO .A.WO

.1.WO .1.WO

.WO .WO

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

56-W9020 56-W9020 56-W9921 56-W6723 56-W6725 56-W9921 56-W6723 56-W6725

56-7924 56-7924

Xtrainer 250

RR 300 RR 300 RR 300

56-785

56-7948 56-7948

.A.WO

Xtrainer 300 Xtrainer 300 Xtrainer 300

56-785

56-7948 56-7948

2022

73mm

.A.WO

4-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

RR 250 RR 250

2005 - 07 75mm 2015 - 19 75mm 2016 - 23 88mm 2016 - 23 95mm 2005 - 09 89mm 2024 - 25 97mm 2016 - 23 100mm 2005 - 09 95mm 2005 - 09 95mm

.WO .WO

.WO .WO

.WO .WO .WO

.WO .WO .WO

– – – – – – – –

56-W029 56-W029

56-R362 56-R362

56-7918 56-7918 56-7984 56-7964

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

RR 390 Enduro RR 430 Enduro

.A.WO .A.WO

.WO .WO

56-W9836 56-W6726

56-R333 56-R329

RR 450 RX 450

.WO

.WO

.WO

.WO

56-W178

56-R363

56-7927

56-0155

.A.WO .A.WO

56-W8833 56-W9929 56-W4731

RR 480 Enduro

.WO .WO .WO

56-R559 56-R554 56-R554

56-7964

56-0154 56-0155 56-0155

RR 525

.WO

.WO .WO

RR 525 ( High Comp )

.WO

.WO

56-W216

56-7918

BULTACO 2-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

TS 250

1970

72mm

.WO

.WO

.WO

56-W971

56-R372

56-7923

56-0152

CAGIVA 2-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

125 Mito ( Domed ) 125 Mito ( Flat Top )

1999 - 12 56mm 1993 - 98 56mm

.B .B

.WO .WO

– –

56-W941 56-W940

56-R365 56-R365

56-7925 56-7925

56-0152 56-0152

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 E29

E-mail: sales@oro2u.com

www.oro2u.com

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