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.
KTM 2-Stroke Models
Years
Size
Piston Kit
Piston Rings
Piston Pin
Piston Clips
Small End Bearing
50 SX 50 SX 60 SX 65 SX 65 SX
2001 - 08 39.5mm 2009 - 23 39.5mm 1997 - 99 43.5mm 2000 - 08 45mm 2009 - 23 45mm 2003 - 23 47mm 2003 - 23 47mm 2004 - 11 52mm 1994 - 97 54.25mm 1998 - 00 54.25mm 2001 - 16 54mm 1994 - 97 54.25mm All Years 56mm All Years 56.25mm 1987 - 93 54.25mm 1984 - 86 54mm 1998 - 00 54.25mm 2001 - 06 54mm 2007 - 23 54mm 2007 - 23 54mm 2021 - 23 54mm 2021 - 23 54mm 2017 - 19 54mm 2017 - 19 54mm 2007 - 08 56mm 2020 - 23 58mm 2020 - 23 58mm 2009 - 15 56mm 2016 - 22 58mm 2016 - 22 58mm 2017 - 19 58mm 2017 - 19 58mm 2020 - 23 58mm 2020 - 23 58mm 1977 - 82 63.4mm 1998 - 16 64mm
.A.WO .A.WO .A.WO .A.WO .A.WO .A.WO
.WO .WO .WO
.WO .WO
.WO .WO .WO .WO .WO
.WO .WO .WO .WO .WO
56-W803 56-W802 56-W312 56-W746 56-W313 56-W012
56-R021 56-R021 56-R317 56-R385 56-R385 56-R905 56-R322 56-R564 56-R255 56-R255 56-R408 56-R255 56-R431 56-R365 56-R255 56-R405 56-R255 56-R408 56-R408 56-R408 56-R408 56-R408 56-R408 56-R408
56-7941 56-7941 56-709 56-709
56-005 56-005 56-005 56-005 56-005 56-0150 56-0150 56-0150 56-0151 56-0151 56-0151 56-0151 56-0152 56-0152 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0151 56-0152 56-0153
56-838 56-838 56-827 56-827 56-827 56-7995 56-7995 56-7995 56-800 56-800 56-800 56-800 56-806 56-806 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800
.WO .WO .WO
56-709
85 SX (Single Ring)
.WO
.WO .WO .WO
.WO .WO .WO
56-7930 56-7930 56-7930 56-783 56-783 56-783 56-783 56-7925 56-7925 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-783 56-701
(Twin Ring)
.A.WO
.WO x2
56-W8328
.WO
105 SX
.A.WO #
56-W314 56-W740 56-W740 56-W213 56-W740 56-W224 56-W251 56-W627 56-W051 56-W740 56-W010 56-W035 56-W213 56-W035 56-W213 56-W035 56-W213 56-W036
125 EGS 125 EXC 125 EXC 125 GS 125 LC2 125 LC2
.A.WO .A.WO .A.WO .A.WO
.WO .WO .WO .WO
.WO .WO .WO .WO .WO .WO .WO
.WO x2
.WO.41 .WO.41
.WO .WO
.000.WO .025.WO .00A.WO
x2
125 GS / MX
.WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO
125 SX 125 SX
.A.WO .A.WO .A.WO .A.WO .A.WO .A.WO .A.WO .A.WO .A.WO .A.WO
+P0.1.WO
–
.WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO
125 SX 1-Ring 125 SX 1-Ring
.WO .WO
2-Ring
.WO x2
125 XC 1-Ring
.WO
2-Ring
.WO x2
125 XC-W 1-Ring
.WO
2-Ring
.WO x2
144 SX 1-Ring
56-R431 56-R435 RSV5800 56-R431 56-R435 RSV5800 56-R435 RSV5800 56-R435 RSV5800
150 EXC TPI 1-Ring
.A.WO .A.WO
56-W9912 56-W6720
2-Ring
x2
150 SX 1-Ring 150 SX 1-Ring
.A.WO
56-W036
.A.WO .A.WO .A.WO .A.WO .A.WO .A.WO
56-W9912 56-W6720 56-W9912 56-W6720 56-W9912 56-W6720
2-Ring
x2
150 XC-W 1-Ring
2-Ring
x2
150 XC-W TPI 1-Ring
2-Ring
x2
175 GS / MC
.00A.WO
.WO .WO
–
56-W967 56-W770 56-W156 56-W006 56-W156 56-W006 56-W601 56-W153 56-W694 56-W753 56-W214 56-W214 56-W214 56-W214 56-W601 56-W655 56-W694 56-W774 56-W824 56-W214 56-W631 56-W154
56-R577 56-R355 56-R372 56-R376
200 EXC / MXC
.A.WO +1.00
.WO .WO .WO .WO
.WO .WO
.WO
56-7923 56-7924 56-7924 56-7924
56-820
240 GS 240 GS
1984
72mm
– – – –
1985 - 88 67mm
+00A.WO
56-0156 56-0153
250 GS / MX 250 GS / MX
1984
72mm
+1.00
.WO
.WO
56-R359 56-R376
1985 - 88 67mm 1990 - 94 67.5mm 1977 - 82 72.5mm 1996 - 99 67.5mm 2000 - 05 66.4mm 2006 - 17 66.4mm 2018 - 23 66.4mm 2015 - 23 66.4mm 2014 - 19 66.4mm 1990 - 94 67.5mm
+00A.WO
.WO
56-7924
56-0156 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153
.WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO
.WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO
.WO
250 GS 250 EXC 250 EXC
.WO
56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924
56-802
56-R375 56-R361 56-R387 56-R420 56-R420 56-R420 56-R420 56-R420 56-R375 56-R387 56-R387 56-R420 56-R420 56-R420 56-R359 56-R372
x2
+1.50 .A.WO .A.WO .A.WO .A.WO .A.WO .A.WO
–
.WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO .WO
56-802 56-802 56-801 56-801 56-801 56-801 56-802 56-802 56-802 56-802 56-802 56-802 56-802 56-802
250 EXC / MXC 2-Ring
.2.WO
250 EXC 2-Ring
.1.WO x2 .1.WO x2 .1.WO x2 .1.WO x2
250 EXC TPI 2-Ring 250 XC-W 2-Ring
250R Freeride
250 SX/MX
.WO
x2
250 SX 250 SX 250 SX
1995
67.5mm
+00A.WO
1996 - 99 67.5mm 2000 - 02 66.4mm 2003 - 04 66.4mm 2005 - 23 66.4mm 1990 - 94 72mm
.A.WO .A.WO .A.WO .A.WO .A.WO
.1.WO .1.WO .2.WO
250 SX 1-Ring 250 SX 2-Ring
300 EXC 300 EXC
.WO
56-785
.WO
1995
72mm
+00A.WO
56-7924
x2
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!
# Single Ring, Will NOT fit 85cc overbore!
*Please visit our website for current prices E38
www.oro2u.com
Tel: 01597 822 666
Fax: 01597 825 224
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