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 56-W4649
Piston Rings
Piston Pin
Piston Clips
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
.A.WO
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.WO .WO
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– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
56-R304 56-R304
56-7973 56-7973
56-0153 56-0153
Hi-Comp. 13.5:1
+00A.WO
56-W199
YZ 400F Comp. 12.5:1
.A.WO
.WO .WO
.WO .WO
.WO .WO
56-W4649
56-R304 56-R304
56-7973 56-7973 56-7926 56-7926
56-0153 56-0153 56-0154 56-0154
Hi-Comp. 13.5:1
+00A.WO
56-W199
WR 426F Comp. 12.5:1 YZ 426F Comp. 12.5:1 WR 450F Comp. 12.5:1
+00A.WO +00A.WO
.WO .WO
56-W4693 56-W4693 56-W4785 56-W4785
56-R321 56-R321
.A.WO
.WO .WO
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.WO .WO
56-R554 56-R554
56-7973 56-7973
56-0153 56-0153
Comp. 13.0:1
.A.WO.H
WR 450F Comp. 12.3:1 WR 450F Std. Comp. 12.5:1
.A.WO
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56-W222
56-R554 56-R562
56-7973 56-7984 56-7984
56-0153 56-0153 56-0153 56-0153
.A.WO .A.WO .A.WO .A.WO .A.WO
56-W4963 56-W4964 56-W4784 56-W4787 56-W4785 56-W4785
Hi-Comp. 13.5:1
.WO
56-R562
WR 450F WR 450F
56-R332.WO
.WO .WO
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56-7891 56-7973
56-0153 56-0153 56-0153 56-0154
YZ 450F Comp. 12.5:1
.WO .WO
56-R554 56-R554
Comp. 13.0:1
.A.WO.H
.WO .WO
56-7973 56-7973
YZ 450F Comp. 12.3:1
2005 2005
95mm 95mm
.A.WO .A.WO .A.WO .A.WO .A.WO
.WO .WO
56-W201 56-W202 56-W222 56-W223 56-W261 56-W261
56-R554 56-R554
Hi-Comp. 13.5:1
.WO .WO
56-7973 56-7973
56-0154 56-0153
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
.WO .WO
.WO .WO
56-R554 56-R554
Hi-Comp. 13.5:1
.WO .WO
56-7973 56-7984
56-0153 56-0153
YZ 450F Comp. 12.5:1
.WO .WO
.WO .WO
56-R562 56-R562
Hi-Comp. 13.5:1
.A.WO.HC
.WO .WO
56-7984 56-7984
56-0153 56-0153
YZ 450F Std. Comp. 12.5:1
.A.WO .A.WO
.WO .WO
.WO .WO
56-W4963 56-W4964 56-W4965 56-W4965 56-W4787 56-W4784 56-W4085 56-W4086 56-W4965 56-W4787 56-W4045 56-W4045 56-W4797 56-W4797 56-W8507
56-R562 56-R562
Hi-Comp. 13.5:1
.WO .WO
56-7984 56-7984
56-0153 56-0153
YZ 450F Comp. 12.9:1
_WO
.WO .WO
.WO .WO
56-R327 56-R327
Hi-Comp. 13.6:1
_WO.HC
.WO .WO
56-7984 56-7891
56-0153 56-0153
YZ 450F 2-Ring Comp 13.20
.A.WO .A.WO .A.WO .A.WO
56-R332.WO
.WO .WO
3-Ring, Comp 13.20
.WO .WO
.WO .WO
56-R328 56-R328
56-7891 56-7984
56-0153 56-0153
YZ 450F Comp. 13.00
2023 2023
97mm 97mm
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Comp. 13.50
.WO
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56-R328
56-7984 56-7984 56-7891 56-7961
56-0153 56-0153
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
_WO
56-R332.WO 56-R332.WO
.WO .WO
.A.WO
56-0153 56-0155 56-0155 56-0156 56-0156 56-0156 56-0157
XT 500
+000 +000
.WO .WO
56-R310 56-R310
TT / SR 500
56-7961 56-7974
TT 600/R XT 600/E
+00A.WO +00A.WO +00A.WO
.WO .WO
.WO .WO .WO
56-R305 56-R305
56-7974 56-7975 56-7955
XTZ 600 Tenere
.WO .WO
56-R501 56-R501
XT 660R
.WO
56-W203
4-Stroke Models
Years
Size
Piston Kit 56-W9841
Piston Rings
Piston Pin
Piston Clips
Small End Bearing
Speedway
All
90mm
.A
–
–
–
–
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 E46
www.oro2u.com
Tel: 01597 822 666
Fax: 01597 825 224
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