ORO2U Dirt Catalogue - Section E - Engine and Performance.

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.

FANTIC 2-Stroke Models

Years

Size

Piston Kit

Piston Rings 56-R408.WO 56-R408.WO

Piston Pin 56-783.WO 56-783.WO

Piston Clips

Small End Bearing

XE 125 XX 125 XX 250

2021 - 22 54mm 2021 - 22 54mm 2021 - 22 66.4mm

56-W6727.A.WO 56-W6727.A.WO 56-W742.A.WO

56-0151 56-0151

56-814.WO 56-814.WO

56-R420.1.WO 56-7924.WO

56-0153.WO 56-801.WO

4-Stroke Models XEF 250 Comp 14.0 XXF 250 Comp 14.0 XEF 450 Comp 13.2:1 XEF 450 2-Ring Version XXF 450 Comp 13.2:1

Years

Size

Piston Kit

Piston Rings 56-R327.WO 56-R327.WO 56-R328.WO 56-R332.WO 56-R328.WO 56-R332.WO

Piston Pin 56-7981.WO 56-7981.WO 56-7984.WO 56-7984.WO 56-7984.WO 56-7984.WO

Piston Clips 56-0152.WO 56-0152.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO

Small End Bearing

2022 2022 2022 2022 2022 2022

77mm 77mm 97mm 97mm 97mm 97mm

56-W8812.A.WO 56-W8812.A.WO 56-W4784.A.WO 56-W4787.A.WO 56-W4784.A.WO 56-W4787.A.WO

- - - - - -

XXF 450

GASGAS 2-Stroke Models

Years

Size

Piston Kit

Piston Rings 56-R021.WO

Piston Pin 56-7941.WO 56-709.WO 56-7930.WO 56-7930.WO

Piston Clips

Small End Bearing

2021 - 23 39.5mm 2021 - 23 45mm 2021 - 23 47mm 2021 - 23 47mm 2000 - 11 54mm 2000 - 11 54mm 2021 - 23 54mm 2003 - 09 54mm 2000 - 14 62.5mm 2014 - 20 62.5mm 1999 - 06 64mm 1997 - 14 66.4mm 2021 - 23 66.4mm 2014 - 20 66.4mm 2022 - 23 66.4mm 1997 - 08 66.4mm 2022 - 23 66.4mm 2002 - 20 72.5mm All Years 76mm 2000 - 14 72mm 2021 - 23 72mm 2014 - 20 72mm 2021 - 23 72mm 2014 - 20 72mm

MC 50 MC 65

56-W802.A.WO 56-W313.A.WO 56-W012.A.WO 56-W8328.A.WO 56-W160.WO 56-W161.WO 56-W213.A.WO 56-W236.WO 56-W168.WO 56-W168.WO 56-W167.WO 56-W157.WO 56-W214.A.WO 56-W157.WO 56-W214.A.WO 56-W157.WO 56-W214.A.WO 56-W171.WO 56-W169.WO 56-W159.WO 56-W9984.A.WO

56-005 56-005 56-0150 56-0150 56-0151 56-0151 56-0151

56-827.WO 56-827.WO 56-7995.WO 56-7995.WO 56-836.WO 56-836.WO 56-800.WO

56-R385

MC 85 (Single Ring)

56-R322.WO

(Twin Ring)

56-R322.WO x2

EC 125 MC 125 MC 125 TXT 125 EC 200 EC 200 R TXT 200

56-R405.1.WO 56-783.WO 56-R405.1.WO 56-783.WO

56-R408.WO

56-783.WO 56-7925.WO

56-R421 56-R373 56-R373

56-0152.WO

56-784 56-784

56-0153.WO 56-802.WO

56-0153.WO 56-0152.WO

56-802

56-R355.WO

56-7923.WO

EC 250 EC 250

56-R420.2.WO 56-7924.WO 56-R420.1.WO 56-7924.WO 56-R420.2.WO 56-7924.WO 56-R420.1.WO 56-7924.WO 56-R420.2.WO 56-7924.WO 56-R420.1.WO 56-7924.WO

56-0153.WO 56-801.WO 56-0153.WO 56-801.WO 56-0153.WO 56-801.WO 56-0153.WO 56-801.WO 56-0153.WO 56-801.WO 56-0153.WO 56-801.WO

EC 250 R EX 250 MC 250 MC 250 TXT 250

56-R374 56-R357

56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO

56-0153.WO 56-0153.WO

– –

TXT 280 ( 18mm Pin Type )

EC 300 EC 300

56-R359.WO

56-0153.WO 56-801.WO 56-0153.WO 56-802.WO 56-0153.WO 56-801.WO 56-0153.WO 56-802.WO 56-0153.WO 56-801.WO

56-R372

EC 300 R

56-W159.WO

56-R359.WO

EX 300 XC 300

56-W9984.A.WO

56-R372

56-W159.WO

56-R359.WO

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 visit our website for current prices E23a

www.oro2u.com

Tel: 01597 822 666

Fax: 01597 825 224

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