ORO2U Dirt Catalogue - Section E - Engine and Performance.

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

Piston Rings 56-R1224.PX 56-R1224.PX 56-R1254.PX 56-R1225.PX 56-R1225.PX 56-R1224.PX 56-R1254.PX 56-R1225.PX 56-R1225.PX 56-R1202.PX 56-R1202.PX 56-R1202.PX 56-R1202.PX 56-R1202.PX 56-R1202.PX 56-R1202.PX 56-R1202.PX 56-R1203.PX 56-R1204.PX 56-R1204.PX 56-R1203.PX 56-R1203.PX 56-R1203.PX 56-R1206.PX 56-R1206.PX 56-R1255.PX 56-R1255.PX 56-R1203.PX 56-R1203.PX 56-R1206.PX 56-R1206.PX 56-R1255.PX 56-R1255.PX 56-R1203.PX 56-R1203.PX 56-R1203.PX 56-R1203.PX 56-R1203.PX 56-R1206.PX 56-R1206.PX 56-R1206.PX 56-R1206.PX

Piston Pin

Piston Clips 56-0176.PX 56-0176.PX 56-0176.PX

Small End Bearing

250 EXC-F (Std. Comp. 12.8:1)

2007 - 11 76mm 2012 - 13 76mm 2007 - 13 76mm

56-W4730+00A.P 56-W4730+00A.P 56-W4734+00A.P

56-7931.PROX 56-7931.PROX 56-7931.PROX

– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –

(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)

2014 - 23 78mm 56-W954.A.PX

2024

81mm 56-W4984.A.PX

2018 - 20 78mm 56-W954.A.PX

56-6500.PROX

56-0176.PX 56-0176.PX 56-0176.PX 56-0176.PX 56-0176.PX 56-0181.PX 56-0181.PX 56-0181.PX 56-0181.PX 56-0181.PX 56-0181.PX 56-0181.PX 56-0181.PX 56-0185.PX 56-0187.PX 56-0187.PX 56-0185.PX 56-0185.PX 56-0185.PX 56-0187.PX 56-0187.PX 56-0185.PX 56-0185.PX 56-0185.PX 56-0185.PX 56-0187.PX 56-0187.PX 56-0185.PX 56-0185.PX 56-0185.PX 56-0185.PX 56-0185.PX 56-0185.PX 56-0185.PX 56-0187.PX 56-0187.PX 56-0187.PX 56-0187.PX 56-0193.PX 56-0193.PX 56-0193.PX 56-0193.PX 56-0187.PX 56-0187.PX 56-0187.PX 56-0193.PX

2006 - 12 76mm 2006 - 12 76mm

56-W4730+00A.P 56-W4734+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) 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)

2013 - 15 78mm 56-W954.A.PX 2016 - 22 78mm 56-W265.A.PX 2023 - 24 81mm 56-W4984.A.PX 2012 - 16 88mm 56-W960.A.PX 2017 - 19 88mm 56-W9932.A.PX 2020 - 24 88mm 56-W4735.A.PX

56-6500.PROX 56-6500.PROX

56-0725.PROX 56-0725.PROX 56-0725.PROX

2011 - 15 88mm 2011 - 15 88mm 2016 - 19 88mm

56-W4735+00A.P 56-W4736+00B.P 56-W4735+00A.P

56-0725.PR 56-0725.PR 56-0725.PR 56-0725.PR 56-0725.PR 56-7959.PR

(High Comp. 14.5:1)

350 SX-F (Std. Comp. 14.0:1)

2020 - 24 88mm 56-W4735_00A.PX 2012 - 17 88mm 56-W960.A.PX 2009 - 11 95mm 56-W4739.B.PX 2003 - 07 89mm 56-W178.A.PX

(Std. Comp. 14.2:1)

350 Freeride (Std. Comp. 12.3:1) 400 EXC (Std. Comp. 11.1:1) 450 EXC-R (Std. Comp. 11.0:1)

– –

(High Comp. 12.0:1)

2003 - 07 89mm

56-W178.B.PX.HI

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)

2008 - 11 95mm 56-W243.A.PX 2012 - 16 95mm 56-W968.A.PX 2017 - 20 95mm 56-W968.A.PX 2004 - 07 95mm 56-W4805.B.PX 2004 - 07 95mm 56-W4806.B.PX 2008 - 12 97mm 56-W107.B.PX 2008 - 12 97mm 56-W244.A.PX 2013 - 14 95mm 56-W956.A.PX 2021 - 22 95mm 56-W956.A.PX 2023 - 24 95mm 56-W4985.A.PX 2003 - 06 95mm 56-W4805.B.PX 2003 - 06 95mm 56-W4806.B.PX 2007 - 12 97mm 56-W107.B.PX 2007 - 12 97mm 56-W244.A.PX 2013 - 19 95mm 56-W956.A.PX 2020 - 22 95mm 56-W956.A.PX 2023 - 24 95mm 56-W4985.A.PX 2012 - 16 95mm 56-W9847.B.PX 2017 - 19 95mm 56-W9847.B.PX 2020 - 23 95mm 56-W8816.A.PX 2000 - 02 95mm 56-W4731.A.PX

56-7959.PR 56-7959.PR 56-7959.PR

56-7958 56-7958

(High Comp. 13.0:1)

450 SM-R (Std. Comp. 12.5:1)

56-7959.PR 56-7959.PR 56-7959.PR 56-7959.PR

(High Comp. 13.5:1)

450 SM-R (Std. Comp. 12.6:1)

450 SM-R 450 SM-R

450 SX (Std. Comp. 12.0:1)

56-7958 56-7958

(High Comp. 13.0:1)

450 SX-F (Std. Comp. 12.5:1)

56-7959.PR 56-7959.PR 56-7959.PR 56-7959.PR

(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)

56-7959.PR 56-7959.PR

56-7959.PROX

56-7958 56-7958 56-7958 56-7958

(High Comp. 12.5:1)

2000 - 02 95mm

56-W216+00B.PX

525 SX/EXC (Std. Comp. 11.0:1)

2003 - 07 95mm 56-W4731.A.PX

(High Comp. 12.5:1)

2003 - 07 95mm 1994 - 97 101mm 1998 - 01 101mm 2002 - 07 101mm

56-W216+00B.PX 56-W181.A.PROX 56-W181.A.PROX 56-W181.A.PROX 56-W181.A.PROX

620 LC4, Duke (Std. Comp. 11.7:1)

– – – – – – – –

– – – –

620 SC (Std. Comp. 11.7:1) 620 SXC (Std. Comp. 11.7:1)

640 LC4, Duke II (Std. Comp. 11.7:1) 1998 - 07 101mm

56-0736.PR 56-0736.PR 56-0736.PR 56-0742.PR

690 Enduro/R (Std. Comp. 11.8:1) 690 Supermoto (Std. Comp. 11.8:1)

2008 - 11 102mm 56-W9831.B.PX 2007 - 09 102mm 56-W9831.B.PX 2008 - 11 102mm 56-W9831.B.PX

690 SMC (Std. Comp. 11.8:1)

990 Adventure/R (Std. Comp. 11.5:1) 2009 - 12 101mm 56-W9833.B.PX

*Please visit our website for current prices

E-mail: sales@oro2u.com

www.oro2u.com

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