Piston Kits
Wossner
KTM 4-Stroke Models
Years
Size
Piston Kit
Piston Rings
Piston Pin
Piston Clips
Small End Bearing
Comp. 12.6:1
450 SX-F
2013 - 22 95mm 2013 - 22 95mm 2013 - 22 95mm
.A.WO
.WO
.WO .WO
.WO .WO
– – – – – – – – – – – – – – – – – – – – – – – – – – – –
56-W956 56-W956 56-W956
56-R554
56-7982 56-7982
56-0154 56-0154
Hi-Comp. 13.6:1
.A.WO.HC .A.WO.GP
.WO .WO
56-R554 56-R554
GP Racer
.WO
.WO .WO
56-7982 56-7964
56-0154 56-0154
Comp. 13.50 Comp. 13.50 Comp. 13.50
2023 2023
450 SX-F 450 XC-F 500 EXC 500 EXC-F 500 EXC-F
95mm 95mm
.A.WO .A.WO
.WO .WO
56-W4985 56-W4985
56-R329 56-R329
.WO .WO
56-7964 56-7982
56-0154 56-0154
2012 - 16 95mm 2017 - 19 95mm 2020 - 23 95mm 2020 - 23 95mm 2007 - 08 100mm 2007 - 08 100mm 2000 - 02 95mm 2000 - 02 100mm 2003 - 07 95mm 2003 - 07 95mm 2003 - 07 100mm 2008 - 11 95mm
.A.WO .A.WO
.WO .WO
.WO .WO
56-W925 56-W925
56-R329 56-R329
.WO .WO
56-7982 56-7982
56-0154 56-0154
.A.WO
.WO .WO
.WO .WO
56-W8816
56-R329 56-R329
500 EXC-F Six Days 505 SX-F Comp 12.5:1
.A.WO
.WO .WO
56-W925 56-W245 56-W315 56-W216 56-W024
56-7982 56-7927
56-0154 56-0155
.A
.WO
.WO .WO
56-R559
High Comp. 13.5:1
+00A.WO +00A.WO +00A.WO
.WO .WO
.WO .WO
56-R559 56-R554
56-7927 56-7927
56-0155 56-0155
520 SX/EXC Hi - Comp 12.5:1
.WO .WO
Big Bore
.WO .WO
.WO .WO
56-R559 56-R554
56-7927 56-7927
56-0155 56-0155
525 SX/EXC Std. Comp 11.0:1
.A.WO
.WO .WO
56-W4731
Hi - Comp 12.5:1
+00A.WO +00A.WO
.WO
.WO .WO
56-W216 56-W024 56-W246 56-W024
56-R554
56-7927 56-7927
56-0155 56-0155
Big Bore
.WO .WO
.WO
56-R559 56-R554
530 EXC-R
.A
.WO .WO
56-7926 56-7927
56-0154 56-0155
540 SXS Racing
2006
100mm
+00A.WO +0.00.WO
.WO
.WO .WO
56-R559
560 EXC
All Years 94mm 2006 - 07 100mm 1988 - 92 95mm
56-R486.WO
56-W186 56-W247 56-W014 56-W017 56-W181 56-W181 56-W181 56-W181
56-7975 56-7927
56-0156 56-0155 56-0156 56-0156 56-0156 56-0156 56-0156 56-0156 56-0156 56-0156
560 SMR Comp 12.0:1
.A .A .A .A .A .A .A .A
.WO .WO
.WO .WO
.WO
56-R559 56-R305
600 LC4 600 LC4 620 LC4 620 SC 625 SMC 640 Duke 640 LC4 660 SMC
56-7974 56-7974
1993
100mm
.WO
.WO .WO
56-R501 56-R364 56-R364 56-R364 56-R364 56-R364 56-R393
1994 - 97 101mm 1998 - 01 101mm 1994 - 09 101mm 1994 - 09 101mm 1998 - 07 101mm 2003 - 09 102mm
56-7974 56-7974
.WO .WO
56-7974 56-7974
.WO .WO .WO
56-W181
56-7974 56-7974
.WO
56-W4809
MAICO 2-Stroke Models
Years
Size
Piston Kit
Piston Rings
Piston Pin
Piston Clips
Small End Bearing
MC / GS 250 MC / GS 250 MC / GS 400 MC / MD 440 MC / GS 490
1973 - 80 67mm 1986 - 02 67.5mm 1974 - 81 77mm 1973 - 80 82mm
+0.00 +0.50 +0.00 +0.00 +0.00
.WO .WO
.WO .WO .WO .WO .WO
.WO .WO
56-W140 56-W141 56-W142 56-W143 56-W144
56-R375 56-R376 56-R388 56-R318 56-R379
56-7924 56-7924 56-785 56-785 56-7948
56-0153 56-0153 56-0153 56-0153 56-0153
56-881 56-881
.WO .WO
– –
1980
86.5mm
.WO
56-881
ROTAX Rotax Engines
Years
Size
Piston Kit 56-W9937
Piston Rings
Piston Pin
Piston Clips
Small End Bearing
SWM 125 (MX-2, MX-6 1980)
1978 - 82 55mm 1977 - 82 62mm 1979 - 82 74mm
.100.WO +00A.WO +00A.WO
–
.WO .WO .WO
– – –
56-R366 56-R572 56-R265
56-0153 56-0153 56-0153
SWM 175 SWM 250
56-W969 56-W970
56-784
.WO
56-7924
RIEJU 2-Stroke Models
Years
Size
Piston Kit
Piston Rings
Piston Pin
Piston Clips
Small End Bearing
MR Racing 200 MR Ranger 200
2021 - 22 62.5mm 2021 - 22 62.5mm 2021 - 22 66.4mm 2021 - 22 66.4mm 2021 - 22 72mm 2021 - 22 72mm 2021 - 22 72mm
.A .A
.WO .WO .WO .WO .WO .WO .WO .WO
.WO .WO .WO .WO .WO .WO .WO .WO
56-W168 56-W168 56-W157 56-W157 56-W159 56-W159 56-W159 56-W159
56-R373 56-R373 56-R420 56-R420 56-R372 56-R372 56-R372 56-R372
56-784 56-784 56-784 56-784 56-7924 56-7924 56-7924 56-7924
56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153 56-0153
56-802 56-802 56-802 56-802 56-801 56-801 56-801 56-801
MR Pro 250
.A.WO .A.WO
.1.WO x2 .1.WO x2
MR Racing 250
.WO .WO .WO .WO
MR Pro 300
.A .A .A .A
x2 x2 x2 x2
MR Racing 300 MR Ranger 300 Six Days 300
2022
72mm
Please Note Wossner Piston rings will NOT run in chrome bores!
Please note All Piston Kits do not include small end bearings. Most Kits available from standard size up to 2.00mm over size.
*Please visit our website for current prices E40
www.oro2u.com
Tel: 01597 822 666
Fax: 01597 825 224
Made with FlippingBook - Online magazine maker