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.

HUSQVARNA 2-Stroke Models Years

Size

Piston Kit

Piston Rings 56-R487.WO

Piston Pin 56-7924.WO 56-7924.WO

Piston Clips 56-0153.WO

Small End Bearing

CR 250 CR 250 CR 250

1987 - 91 70mm 1992 - 98 67mm 1998 - 05 66mm 2014 - 23 66.4mm 1974 - 84 69.5mm 1985 - 86 69.5mm 1987 - 91 70mm 1992 - 98 67mm 1998 - 13 66mm

56-W080.WO.A 56-W699.A.WO 56-W086.A.WO 56-W214.A.WO

56-R571

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

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

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

TC / TE 250 / TE 250i

56-R420.1.WO x2

WR 250 WR 250 WR 250 WR 250 WR 250 TC 300 TC 300 TE 300 TE 300 TE 300i TX 300 TX 300i WR 300 CR 360

56-W218+00A.WO 56-W219+00A.WO 56-W080.WO.A 56-W699.A.WO 56-W086.A.WO 56-W9947.A.WO 56-W9984.A.WO 56-W854.A.WO 56-W9947.A.WO 56-W9984.A.WO 56-W9947.A.WO 56-W9984.A.WO 56-W854.A.WO

56-R367 56-R367

56-0153.WO 56-0153.WO

– –

56-R487.WO

56-R571

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

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

2017 2018

72mm 72mm

56-R359.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-R372

56-0153.WO

2014 - 16 72mm

56-R359.WO

56-0153.WO 56-802.WO 56-0153.WO 56-802.WO 56-0153.WO 56-802.WO 56-0153.WO 56-802.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-802.WO 56-0153.WO 56-881.WO

2017

56-R372 56-R372 56-R372 56-R372

2018 - 23 72mm 2017 - 18 72mm 2020 - 23 72mm 2009 - 13 72mm

56-R359.WO

1992 - 05 78mm 56-W111

56-R368

56-785

CR 390 ( Comp. Height: 35mm )

1977 - 80 83.5mm

56-W089_050.WO 56-W090+00A.WO 56-W155+00A.WO

56-R566.WO 56-R566.WO

56-7924.WO 56-7924.WO

56-0153.WO 56-0153.WO 56-0153.WO 56-0155.WO

– – – –

CR / WR 390 ( Comp. Height: 37mm ) 1977 - 80 83mm

WR 430 CR 500

1984 - 88 86mm 1983 - 87 87mm

56-R370 56-R371

56-785 56-789

56-W091+1.00

HUSQVARNA 4-Stroke Models Years

Size

Piston Kit

Piston Rings 56-R323.WO 56-R323.WO 56-R551.WO 56-R551.WO 56-R326.WO 56-R550.WO 56-R323.WO 56-R323.WO 56-R323.WO 56-R323.WO RIK81.00A 56-R551.WO 56-R551.WO 56-R326.WO 56-R550.WO 56-R551.WO 56-R326.WO 56-R326.WO

Piston Pin 56-7981.WO 56-7981.WO 56-7931.WO 56-7931.WO 56-7931.WO 56-7981.WO 56-7981.WO 56-7981.WO 56-7981.WO 56-7981.WO 56-7931.WO 56-7931.WO 56-7931.WO

Piston Clips 56-0152.WO 56-0152.WO 56-0152.WO 56-0152.WO 56-0152.WO 56-0150.WO 56-0152.WO 56-0152.WO 56-0152.WO 56-0152.WO 56-0152.WO 56-0152.WO 56-0152.WO 56-0152.WO 56-0150.WO 56-0152.WO 56-0152.WO

Small End Bearing

FE 250 Comp. 13.9:1

2014 - 23 2014 - 23

78mm 78mm

56-W954.A.WO 56-W955.A.WO

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

Hi-Comp. 14.5:1

TC 250 Comp. 12.9:1 TC 250 Comp. 13.0:1 TC 250 Comp. 14.0:1 TC 250 Comp. 14.0:1 FC 250 Comp 13.9:1

2003 - 05 76mm 56-W117.A

2006 - 07 76mm 2010 - 11 79mm 2012 - 13 79mm

56-W145.WO.A 56-W148.WO.A 56-W964.A.WO

2014 - 15 2014 - 15 2016 - 22 2016 - 22

78mm 78mm 78mm 78mm 81mm

56-W954.A.WO 56-W955.A.WO.HC 56-W265.A.WO 56-W265.A.WO.HC 56-W4077.A.WO

Hi Comp 14.5:1

FC 250 Comp. 13.9:1

Hi Comp 14.5:1

FC 250 Comp. 14.40 TE 250 Comp. 12.9:1 TE 250 Comp. 13.0:1 TE 250 Comp. 14.0:1 TE 250 Comp. 14.0:1

2023

2003 - 05 76mm 56-W117.A

2006 - 09 76mm 2010 - 12 79mm

56-W145.WO.A 56-W148.WO.A 56-W964.A.WO 56-W145.WO 56-W148.WO.A 56-W964.A.WO 56-W152.A.WO 56-W149.WO.A 56-W152.WO.A

2013

79mm

WP063-SP

TXC 250 TXC 250 TXC 250 TXC 310

2008 - 09 76mm 2010 - 12 79mm

56-7925.WO 56-7931.WO

2013 2012

79mm 82mm

56-0150

56-R395

56-7925.WO.44 56-7925.WO.44 56-7925.WO.44

56-0152.WO 56-0152.WO 56-0152.WO 56-0153.WO 56-0153.WO

TE 310 Comp. 13.0:1 TE 310 Comp. 13.0:1 FC 350 Comp. 13.5:1

2009 - 10 83mm 2011 - 12 82mm 2016 - 22 88mm 2016 - 22 88mm

56-R552.WO

56-R395

56-W4735+00A.WO 56-W4736+00A.WO

56-R333.WO 56-R333.WO

56-7984.WO 56-7984.WO

Hi-Comp. 14.5:1

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 E26

www.oro2u.com

Tel: 01597 822 666

Fax: 01597 825 224

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