ProX
Piston Kits
ProX Piston Kits ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy is used as is used for all major Japanese engine manufacturers. ProX piston kits are a first class solution to replace the original piston in your motorcycle. ProX piston kits for sleeved cylinders are available in standard size and a wide range of over sizes. ProX pistons for plated cylinders come in standard size, A, B, C, D & over sizes. All ProX piston kits are supplied complete with piston rings, wrist pin and circlips, ready to install!
KTM 4-Stroke Models
Years
Size
Piston Kit 56-W4730 56-W4730 56-W4734
Piston Rings
Piston Pin
Piston Clips
Small End Bearing
250 EXC-F (Std. Comp. 12.8:1)
2007 - 11 76mm 2012 - 13 76mm 2007 - 13 76mm 2014 - 23 78mm 2024 - 26 81mm 2018 - 20 78mm 2006 - 12 76mm 2006 - 12 76mm 2013 - 15 78mm 2016 - 22 78mm 2023 - 26 81mm 2023 - 26 81mm 2012 - 16 88mm 2017 - 19 88mm 2020 - 24 88mm 2011 - 15 88mm 2011 - 15 88mm 2016 - 19 88mm 2020 - 26 88mm 2012 - 17 88mm 2009 - 11 95mm 2003 - 07 89mm 2003 - 07 89mm 2008 - 11 95mm 2012 - 16 95mm 2017 - 20 95mm 2004 - 07 95mm 2004 - 07 95mm 2008 - 12 97mm 2008 - 12 97mm 2013 - 14 95mm 2021 - 22 95mm 2023 - 24 95mm 2003 - 06 95mm 2003 - 06 95mm 2007 - 12 97mm 2007 - 12 97mm 2013 - 19 95mm 2020 - 22 95mm 2023 - 26 95mm 2012 - 16 95mm 2017 - 19 95mm 2020 - 24 95mm 2000 - 02 95mm 2000 - 02 95mm 2003 - 07 95mm 2003 - 07 95mm 1994 - 97 101mm 1998 - 01 101mm 2002 - 07 101mm
+00A.P +00A.P +00A.P
.PX .PX .PX .PX .PX .PX .PX .PX
.PROX .PROX .PROX
.PX .PX .PX
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
56-R1224 56-R1224 56-R1254 56-R1225 56-R1225 56-R1224 56-R1254 56-R1225
56-7931 56-7931 56-7931
56-0176 56-0176 56-0176
(Std. Comp. 13.2:1) (High Comp. 13.3:1)
250 EXC-F (Std. Comp. 13.9:1) 250 EXC-F (Std. Comp. 14.5:1) 250 F Freeride (Std. Comp. 12.8:1) 250 SX-F (Std. Comp. 12.8:1)
.A.PX
–
–
56-W954
.A.PX
56-W4984 56-W954 56-W4730 56-W4734
.A.PX
56-6500.PROX
.PX .PX .PX .PX
56-0176 56-0176 56-0176 56-0176
+00A.P +00A.P
56-0717.PR 56-0717.PR
(High Comp. 13.3:1)
250 SX-F (Std. Comp. 13.9:1) 250 SX-F (Std. Comp. 14.4:1) 250 SX-F (Std. Comp. 14.5:1) 250 XC-F (Std. Comp. 14.5:1) 350 EXC-F (Std. Comp. 12.3:1) 350 EXC-F (Std. Comp. 12.3:1) 350 EXC-F (Std. Comp. 13.5:1) 350 SX-F (Std. Comp. 13.5:1)
.A.PX .A.PX
56-6500.PROX 56-6500.PROX
56-W954 56-W265
.PX
.PX
56-R1225
56-0176
.A.PX .A.PX
56-W4984 56-W4984 56-W960 56-W9932 56-W4735 56-W4735 56-W4736 56-W4735 56-W4735
.A.PX
.PX .PX .PX .PX .PX .PX .PX .PX
.PROX .PROX .PROX
.PX .PX
56-R1202 56-R1202 56-R1202 56-R1202 56-R1202 56-R1202 56-R1202 56-R1202
56-0725 56-0725
56-0181 56-0181
.A.PX
_00A.PX _00A.PX _00B.PX _00A.PX _00A.PX
.PX .PX .PX .PX
56-0725 56-0725 56-0725 56-0725
56-0181 56-0181 56-0181 56-0181
.PR .PR .PR .PR
(High Comp. 14.5:1)
350 SX-F (Std. Comp. 14.0:1)
(Std. Comp. 14.2:1)
.PX .PX
56-0725 56-0725 56-7959
56-0181 56-0181
350 Freeride (Std. Comp. 12.3:1) 400 EXC (Std. Comp. 11.1:1) 450 EXC-R (Std. Comp. 11.0:1)
.A.PX
.PR .PR
56-W960
.B.PX
.PX .PX .PX .PX .PX .PX .PX .PX
.PX .PX
56-W4739
56-R1203 56-R1204 56-R1204 56-R1203 56-R1203 56-R1203 56-R1206 56-R1206
56-0185 56-0187
.A.PX
– –
56-W178 56-W178 56-W243 56-W968 56-W968
(High Comp. 12.0:1)
.B.PX.HI
.PX .PX
56-0187 56-0185
450 EXC-R (Std. Comp. 11.9:1) 450 EXC (Std. Comp. 11.8:1) 450 EXC-F (Std. Comp. 11.8:1) 450 SM-R (Std. Comp. 12.0:1)
.A.PX .A.PX .A.PX
.PR .PR .PR
56-7959 56-7959 56-7959 56-7958
.PX .PX .PX .PX
56-0185 56-0185 56-0187 56-0187
.B.PX .B.PX
56-W4805 56-W4806
(High Comp. 13.0:1)
56-7958 56-7959 56-7959 56-7959
450 SM-R (Std. Comp. 12.5:1)
.B.PX .A.PX .A.PX .A.PX
.PX .PX .PX .PX .PX .PX .PX .PX .PX .PX
.PR .PR .PR .PR
.PX .PX .PX .PX
56-W107 56-W244 56-W956 56-W956
56-R1255 56-R1255 56-R1203 56-R1203 56-R1206 56-R1206 56-R1255 56-R1255 56-R1203 56-R1203
56-0185 56-0185 56-0185 56-0185
(High Comp. 13.5:1)
450 SM-R (Std. Comp. 12.6:1)
450 SM-R 450 SM-R
56-7959
.A.PX .B.PX .B.PX
56-W4985 56-W4805 56-W4806
450 SX (Std. Comp. 12.0:1)
.PX .PX .PX .PX .PX .PX
56-7958 56-7958 56-7959 56-7959 56-7959 56-7959
56-0187 56-0187 56-0185 56-0185 56-0185 56-0185
(High Comp. 13.0:1)
450 SX-F (Std. Comp. 12.5:1)
.B.PX .A.PX .A.PX .A.PX
.PR .PR .PR .PR
56-W107 56-W244 56-W956 56-W956
(High Comp. 13.5:1)
450 SX-F (Std. Comp. 12.6:1)
(Std. Comp. 12.75:1)
450 SX-F (Std. Comp. 13.1:1) 500 EXC (Std. Comp. 11.8:1) 500 EXC-F (Std. Comp. 11.8:1) 500 EXC-F (Std. Comp. 12.75:1) 520 SX/EXC (Std. Comp. 11.0:1)
.A.PX .B.PX .B.PX .A.PX .A.PX
56-W4985 56-W9847 56-W9847 56-W8816 56-W4731
.PX .PX .PX .PX .PX .PX .PX
.PR .PR
.PX .PX
56-R1203 56-R1203 56-R1203 56-R1206 56-R1206 56-R1206 56-R1206
56-7959 56-7959 56-7959 56-7958 56-7958 56-7958 56-7958
56-0185 56-0185
.PROX
.PX .PX .PX .PX
56-0185 56-0187 56-0187 56-0187
(High Comp. 12.5:1)
+00B.PX
56-W216
525 SX/EXC (Std. Comp. 11.0:1)
.A.PX
56-W4731
(High Comp. 12.5:1)
+00B.PX .A.PROX .A.PROX
.PX .PX
56-W216 56-W181 56-W181
56-0187 56-0193
620 LC4, Duke (Std. Comp. 11.7:1)
– – – – – – – –
– – – –
620 SC (Std. Comp. 11.7:1) 620 SXC (Std. Comp. 11.7:1)
.PX
56-0193
.A.PROX .A.PROX
.PX .PX
56-W181 56-W181
56-0193 56-0193
640 LC4, Duke II (Std. Comp. 11.7:1) 1998 - 07 101mm
690 Enduro/R (Std. Comp. 11.8:1) 690 Supermoto (Std. Comp. 11.8:1)
2008 - 11 102mm 2007 - 09 102mm 2008 - 11 102mm
.B.PX .B.PX .B.PX .B.PX
.PR .PR
.PX .PX
56-W9831 56-W9831 56-W9831 56-W9833
56-0736 56-0736
56-0187 56-0187
690 SMC (Std. Comp. 11.8:1)
.PR .PR
.PX .PX
56-0736 56-0742
56-0187 56-0193
990 Adventure/R (Std. Comp. 11.5:1) 2009 - 12 101mm
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E-mail: sales@oro2u.com
www.oro2u.com
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