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.
YAMAHA 4-Stroke Models
Years
Size
Piston Kit
Piston Rings 56-R304.WO 56-R304.WO 56-R304.WO 56-R304.WO 56-R321.WO 56-R321.WO 56-R554.WO 56-R554.WO 56-R554.WO 56-R562.WO 56-R562.WO 56-R332.WO 56-R554.WO 56-R554.WO 56-R554.WO 56-R554.WO 56-R554.WO 56-R554.WO 56-R562.WO 56-R562.WO 56-R562.WO 56-R562.WO 56-R327.WO 56-R327.WO 56-R332.WO 56-R328.WO 56-R328.WO 56-R328.WO 56-R332.WO 56-R332.WO
Piston Pin 56-7973.WO 56-7973.WO 56-7973.WO 56-7973.WO
Piston Clips 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO
Small End Bearing
WR 400F Comp. 12.5:1
1998 - 00 92mm 1998 - 00 92mm 1998 - 99 92mm 1998 - 99 92mm 2001 - 02 95mm 2000 - 02 95mm 2003 - 06 95mm 2003 - 06 95mm 2007 - 15 95mm 2016 - 18 97mm 2016 - 18 97mm 2019 - 20 97mm 2021 - 23 97mm 2003 - 04 95mm 2003 - 04 95mm
56-W4649.A.WO 56-W199+00A.WO 56-W4649.A.WO 56-W199+00A.WO 56-W4693+00A.WO 56-W4693+00A.WO 56-W4785.A.WO 56-W4785.A.WO.H 56-W222.A.WO 56-W4963.A.WO 56-W4964.A.WO 56-W4784.A.WO 56-W4787.A.WO 56-W4785.A.WO 56-W4785.A.WO.H
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Hi-Comp. 13.5:1
YZ 400F Comp. 12.5:1
Hi-Comp. 13.5:1
WR 426F Comp. 12.5:1 YZ 426F Comp. 12.5:1 WR 450F Comp. 12.5:1
56-7926 56-7926
56-0154 56-0154
56-7973.WO 56-7973.WO 56-7973.WO 56-7984.WO 56-7984.WO 56-7891.WO 56-7973.WO 56-7973.WO 56-7973.WO 56-7973.WO 56-7973.WO 56-7973.WO 56-7984.WO 56-7984.WO 56-7984.WO 56-7984.WO 56-7984.WO 56-7984.WO 56-7891.WO 56-7891.WO 56-7984.WO 56-7984.WO 56-7984.WO 56-7891.WO
56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO
Comp. 13.0:1
WR 450F Comp. 12.3:1 WR 450F Std. Comp. 12.5:1
Hi-Comp. 13.5:1
WR 450F WR 450F
YZ 450F Comp. 12.5:1
Comp. 13.0:1
YZ 450F Comp. 12.3:1
2005 2005
95mm 95mm
56-W201.A.WO 56-W202.A.WO 56-W222.A.WO 56-W223.A.WO 56-W261.A.WO
56-0154 56-0154
Hi-Comp. 13.5:1
YZ 450F Comp. 12.3:1
2006 - 09 95mm 2006 - 09 95mm 2010 - 13 97mm 2010 - 13 97mm 2014 - 17 97mm 2014 - 17 97mm 2018 - 19 97mm 2018 - 19 97mm 2020 - 22 97mm 2020 - 22 97mm
56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0153.WO 56-0155.WO 56-0155.WO
Hi-Comp. 13.5:1
YZ 450F Comp. 12.5:1
Hi-Comp. 13.5:1
56-W261.A.WO.HC 56-W4963.A.WO 56-W4964.A.WO 56-W4965_WO 56-W4965_WO.HC 56-W4787.A.WO 56-W4784.A.WO 56-W4085.A.WO 56-W4086.A.WO 56-W4965_WO 56-W4787.A.WO 56-W4045+000 56-W4045+000 56-W4797+00A.WO 56-W4797+00A.WO 56-W8507+00A.WO
YZ 450F Std. Comp. 12.5:1
Hi-Comp. 13.5:1
YZ 450F Comp. 12.9:1
Hi-Comp. 13.6:1
YZ 450F 2-Ring Comp 13.20
3-Ring, Comp 13.20
YZ 450F Comp. 13.00
2023 2023
97mm 97mm
Comp. 13.50
YZ 450FX YZ 450FX
2019 - 20 97mm 2021 - 23 97mm 1976 - 81 87mm All years 87mm 1984 - 04 95mm 1984 - 04 95mm 1991 - 98 100mm 2004 - 17 100mm
XT 500
56-R310 56-R310
56-7961 56-7961
TT / SR 500
TT 600/R XT 600/E
56-R305.WO 56-R305.WO 56-R501.WO 56-R501.WO
56-7974.WO 56-7974.WO 56-7975.WO
56-0156 56-0156 56-0156 56-0157
XTZ 600 Tenere
XT 660R
56-W203.WO
56-7955
4-Stroke Models
Years
Size
Piston Kit
Piston Rings
Piston Pin
Piston Clips
Small End Bearing
Speedway
All
90mm 56-W9841.A
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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 E36
www.oro2u.com
Tel: 01597 822 666
Fax: 01597 825 224
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