Wossner
Piston Kits
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.
YAMAHA 2-Stroke Models
Years
Size
Piston Kit
Piston Rings
Piston Pin
Piston Clips
Small End Bearing
YT 125 Tri-Moto YFS 200 Blaster YTZ 250 Tri-Z YFZ 350 Banshee
1980 - 85 56mm 56-W253.000
56-R431
56-7925.WO.41
56-0152.WO 56-806.WO 56-0152.WO 56-832.WO 56-0153.WO 56-809.WO 56-0152.WO 56-832.WO
1988 - 06 66mm 1985 - 86 68mm 1987 - 06 64mm
56-W573+000.WO 56-W196+00A.WO 56-W513+00A.WO
56-R480.WO 56-7923.WO 56-R500.WO 56-7924.WO 56-R355.WO 56-7923.WO
4-Stroke Models YFM 125 R Raptor YFM 250 Bear Tracker
Years
Size
Piston Kit
Piston Rings
Piston Pin 56-701.WO
Piston Clips
Small End Bearing
2011 - 13 54mm 1999 - 04 71mm 2007 - 09 71mm 2005 - 06 71mm 2008 - 13 74mm 1992 - 00 71mm 1989 - 99 83mm 2007 - 14 83mm 2005 - 13 83mm 1987 - 04 83mm 2004 - 06 83mm 2006 - 09 83mm 2007 - 08 84.5mm 2000 - 08 84.5mm 2004 - 05 95mm 2004 - 05 95mm 2004 - 05 95mm 2006 - 09 95mm 2006 - 09 95mm 2006 - 09 95mm 2012 - 13 95mm 2012 - 13 95mm 2012 - 13 95mm 2009 - 13 95mm 2009 - 13 95mm 2009 - 13 95mm 2014 - 23 95mm 2014 - 23 95mm 2014 - 23 95mm 2010 - 11 95mm 1998 - 01 95mm 2001 - 05 100mm 2001 - 05 100mm 2002 - 06 100mm 2002 - 06 100mm 2006 - 07 100mm 2006 - 07 100mm 2007 - 13 102mm 2014 - 15 102mm 2016 - 18 103mm 2019 - 23 102mm 2016 - 18 103mm 2019 - 23 102mm 2006 - 14 102mm 2015 - 23 102mm 2016 - 18 103mm 2008 - 13 102mm 2014 - 23 102mm
56-W197+00A.WO 56-W4675+000.WO 56-W4675+000.WO 56-W4675+000.WO 56-W4950.A.WO 56-W4675+000.WO 56-W4419+00A.WO 56-W4419+00A.WO 56-W4419+00A.WO 56-W4419+00A.WO 56-W4419+00A.WO 56-W4419+00A.WO 56-W9924.00A.WO 56-W9924.00A.WO
56-R269 56-R350 56-R350 56-R350
56-0151
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
56-732 56-732 56-732 56-7972 56-732
56-0152.WO 56-0152.WO 56-0152.WO 56-0160.WO 56-0152.WO
YFM 250 Big Bear
YFM 250 Bruin
YFM 250R Raptor Comp.12.0:1
56-R211.WO
YFB 250 Timberwolf YFM 350 Big Bear YFM 350 Grizzly YFM 350 Raptor YFM 350 Warrior YFM 350 Bruin YFM 350 Wolverine
56-R350
56-R552.WO 56-7943.WO 56-R552.WO 56-7943.WO 56-R552.WO 56-7943.WO 56-R552.WO 56-7943.WO 56-R552.WO 56-7943.WO 56-R552.WO 56-7943.WO
56-0154 56-0154 56-0154 56-0154 56-0154 56-0154
YFM 400 Grizzly Comp. 10.5 YFM 400 F Kodiak Comp. 10.5 YFZ 450 (Carb) Comp. 12.60
845XSY 845XSY
56-7961 56-7961
56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO 56-0155.WO
56-W250.A.WO
56-R321.WO 56-7918.WO 56-R329.WO 56-7927.WO 56-R554.WO 56-7918.WO 56-R321.WO 56-7918.WO 56-R329.WO 56-7927.WO 56-R554.WO 56-7918.WO 56-R321.WO 56-7918.WO 56-R329.WO 56-7927.WO 56-R554.WO 56-7918.WO 56-R321.WO 56-7918.WO 56-R329.WO 56-7927.WO 56-R554.WO 56-7918.WO 56-R321.WO 56-7918.WO 56-R329.WO 56-7927.WO 56-R554.WO 56-7918.WO 56-R321.WO 56-7918.WO 56-R305.WO 56-7974.WO 56-R501.WO 56-7975.WO 56-R501.WO 56-7974.WO 56-R501.WO 56-7975.WO 56-R501.WO 56-7974.WO 56-R501.WO 56-7975.WO 56-R501.WO 56-7974.WO
Comp. 13.00 Comp. 14.70
56-W4865+00A.WO 56-W4835+00A.WO
YFZ 450 (Carb) Comp. 12.00
56-W250.A.WO
Comp. 12.40 Comp. 13.80
56-W4865+00A.WO 56-W4835+00A.WO
YFZ 450 (Carb) Comp. 12.30
56-W250.A.WO
Comp. 12.60 Comp. 14.20
56-W4865+00A.WO 56-W4835+00A.WO
YFZ 450R (EFI) Comp. 12.30
56-W250.A.WO
Comp. 12.60 Comp. 14.20
56-W4865+00A.WO 56-W4835+00A.WO
YFZ 450R (EFI) Comp. 12.50
56-W250.A.WO
Comp. 12.80 Comp. 14.40
56-W4865+00A.WO 56-W4835+00A.WO
YFZ 450X (EFI)
56-W250.A.WO
YFM 600F Grizzly Comp. 8.50 YFM 660R Raptor Comp. 9.10
56-W4797+00A.WO 56-W8507+00A.WO 56-W4737.HC.WO 56-W8507+00A.WO 56-W4737.HC.WO 56-W8507+00A.WO 56-W4737.HC.WO 56-W4903+000.WO 56-W8802+00A.WO 56-W8802+100.WO 56-W8802+00A.WO 56-W8802+100.WO 56-W8802+00A.WO 56-W4903+000.WO 56-W8802+00A.WO 56-W8802+100.WO 56-W4903+000.WO 56-W8802+00A.WO
56-0156 56-0156 56-0156 56-0156 56-0156 56-0156 56-0156 56-0157 56-0157 56-0157 56-0157 56-0157 56-0157 56-0157 56-0157 56-0157 56-0157 56-0157
Hi-Comp. 10.50
YFM 660F Grizzly Comp. 9.10
Hi-Comp. 10.50
YXR 660 Rhino Comp. 9.10
Hi-Comp. 10.50
YFM 700 Grizzly Hi-Comp. 11.00 YFM 700 Grizzly Hi-Comp. 11.00 YFM 700 Grizzly Hi-Comp. 11.00 YFM 700 Grizzly Hi-Comp. 11.00 YFM 700 Kodiak Hi-Comp. 11.00 YFM 700 Kodiak Hi-Comp. 11.00 YFM 700 Raptor Hi-Comp. 11.00 YFM 700 Raptor Hi-Comp. 11.00 YXE 700 Wolverine R-Spec Hi-Comp. YXR 700 Rhino Hi-Comp. 11.00 YXM 700 Viking Hi-Comp. 11.00
56-R393 1020XSU 1030XSU 1020XSU 1030XSU 1020XSU 56-R393 1020XSU 1030XSU 56-R393 1020XSU
56-7955
WP024-SP WP024-SP WP024-SP WP024-SP WP024-SP
56-7955
WP024-SP WP024-SP
56-7955
WP024-SP
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 Note when ordering a small end bearing for a 2001 YZ125, you will need to order Part No. 56-814
*Please visit our website for current prices E11
E-mail: sales@oro2u.com
www.oro2u.com
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