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 56-R021.WO 56-R021.WO 56-R317.WO
Piston Pin 56-7941.WO 56-7941.WO 56-709.WO 56-709.WO 56-709.WO 56-7930.WO 56-7930.WO 56-7930.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO
Piston Clips 56-005.WO 56-005.WO 56-005.WO 56-005.WO 56-005.WO
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
56-W803.A.WO 56-W802.A.WO 56-W312.A.WO 56-W746.A.WO 56-W313.A.WO 56-W012.A.WO 56-W8328.A.WO 56-W314.A.WO # 56-W740.A.WO 56-W740.A.WO 56-W213.A.WO 56-W740.A.WO 56-W224.000.WO 56-W251.025.WO 56-W627.00A.WO 56-W051.A.WO 56-W740.A.WO 56-W010.A.WO 56-W035.A.WO 56-W213.A.WO 56-W035.A.WO 56-W213.A.WO 56-W035.A.WO 56-W213.A.WO 56-W036.A.WO 56-W9912.A.WO 56-W6720.A.WO 56-W036.A.WO 56-W9912.A.WO 56-W6720.A.WO 56-W9912.A.WO 56-W6720.A.WO 56-W9912.A.WO 56-W6720.A.WO 56-W967.00A.WO 56-W770.A.WO
56-838.WO 56-838.WO 56-827.WO 56-827.WO 56-827.WO 56-7995.WO 56-7995.WO 56-7995.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO
56-R385 56-R385
85 SX (Single Ring)
56-R905.WO
56-0150 56-0150 56-0150 56-0151 56-0151 56-0151 56-0151
(Twin Ring)
56-R322.WO x2
56-R564.WO
105 SX
125 EGS 125 EXC 125 EXC 125 GS 125 LC2 125 LC2
56-R255 56-R255
56-R408.WO x2
56-R255
56-7925.WO.41 56-7925.WO.41
56-0152.WO 56-806.WO 56-0152.WO 56-806.WO
56-R431 x2
56-R365 56-R255
125 GS / MX
56-783.WO
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
56-800.WO
125 SX 125 SX
56-R405+P0.1.WO 56-783.WO
–
56-R255
56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-783.WO 56-701.WO 56-7923.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO
56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO 56-800.WO
125 SX 1-Ring 125 SX 1-Ring
56-R408.WO 56-R408.WO
2-Ring
56-R408.WO x2
125 XC 1-Ring
56-R408.WO
2-Ring
56-R408.WO x2
125 XC-W 1-Ring
56-R408.WO
2-Ring
56-R408.WO x2
144 SX 1-Ring
56-R431 56-R435
150 EXC TPI 1-Ring
2-Ring
RSV5800 x2
150 SX 1-Ring 150 SX 1-Ring
56-R431 56-R435
2-Ring
RSV5800 x2
150 XC-W 1-Ring
56-R435
2-Ring
RSV5800 x2
150 XC-W TPI 1-Ring
56-R435
2-Ring
RSV5800 x2 56-R577.WO 56-R355.WO
175 GS / MC
–
200 EXC / MXC
56-0152.WO 56-820.WO
240 GS 240 GS
1984
72mm
56-W156+1.00
56-R372 56-R376
56-0153.WO
– – – –
1985 - 88 67mm
56-W006+00A.WO
56-0156
250 GS / MX 250 GS / MX
1984
72mm
56-W156+1.00
56-R359.WO
56-0153.WO
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
56-W006+00A.WO
56-R376
56-0156
56-0153.WO 56-802.WO
250 GS 250 EXC 250 EXC
56-W601.WO 56-W153+1.50 56-W694.A.WO 56-W753.A.WO 56-W214.A.WO 56-W214.A.WO 56-W214.A.WO 56-W214.A.WO 56-W601.WO
56-R375 x2
56-R361 56-R387
56-0153.WO
–
56-0153.WO 56-802.WO 56-0153.WO 56-802.WO 56-0153.WO 56-801.WO 56-0153.WO 56-801.WO 56-0153.WO 56-801.WO 56-0153.WO 56-801.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 56-802.WO 56-0153.WO 56-802.WO 56-0153.WO 56-802.WO 56-0153.WO 56-802.WO
250 EXC / MXC 2-Ring
56-R420.2.WO 56-7924.WO
250 EXC 2-Ring
56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO 56-7924.WO
56-R420.1.WO x2 56-R420.1.WO x2 56-R420.1.WO x2 56-R420.1.WO x2
250 EXC TPI 2-Ring 250 XC-W 2-Ring
250R Freeride
250 SX/MX
56-R375 x2
250 SX 250 SX 250 SX
1995
67.5mm
56-W655+00A.WO
56-R387 56-R387
1996 - 99 67.5mm 2000 - 02 66.4mm 2003 - 04 66.4mm 2005 - 23 66.4mm 1990 - 94 72mm
56-W694.A.WO 56-W774.A.WO 56-W824.A.WO 56-W214.A.WO 56-W631.A.WO
56-R420.1.WO 56-7924.WO 56-R420.1.WO 56-7924.WO 56-R420.2.WO 56-7924.WO
250 SX 1-Ring 250 SX 2-Ring
300 EXC 300 EXC
56-R359.WO 56-R372 x2
56-785
56-7924.WO
1995
72mm
56-W154+00A.WO
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 E29a
www.oro2u.com
Tel: 01597 822 666
Fax: 01597 825 224
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