ORO2U Dirt Catalogue - Section E - Engine and Performance.

Piston Kits

ProX

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!

2-Stroke Models RIEJU

Years

Size

Piston Kit

Piston Rings 56-R1201.PX

Piston Pin

Piston Clips 56-0181.PX

Small End Bearing

MR 300 Pro / Racing / Ranger

2021

72mm 56-W159.A.PX

56-781.PROX

56-802.PROX

SHERCO

2-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips 56-0166.PX 56-0174.PX 56-0174.PX 56-0181.PX

Small End Bearing

50 SE / SM 125 SC-R 125 SE-R 250 SC-R

2003 - 19 40.3mm 56-W9850.130.PX

56-6306.PROX 56-8142.PROX 56-8142.PROX 56-6373.PROX 56-6373.PROX 56-6373.PROX 56-6373.PROX 56-6373.PROX

2019

54mm 56-W9845.A.PX

56-729.PROX 56-729.PROX 56-781.PROX

2018 - 22 54mm 56-W9845.A.PX

2019

66.34mm 56-W9989.A.PX

56-R1207.PX

250 SE / SE-R 250 SE / SE-R

2014 - 16 66.34mm 56-W9988.A.PX 2017 - 22 66.34mm 56-W9989.A.PX

56-R1207.PX 56-R1201.PX 56-R1201.PX

56-781.PROX

56-0181.PX 56-0181.PX 56-0181.PX

300 SC-R

2019

72mm 56-W9990.A.PX

– –

300 SE / SE-R

2016 - 22 72mm 56-W9990.A.PX

4-Stroke Models 250 SE F / SE F-R

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

2014 - 18 76mm 56-W9986.A.PX 2014 - 18 76mm 56-W9986.A.PX 2014 - 17 84mm 56-W9987.A.PX 2014 - 17 84mm 56-W9987.A.PX

– – – –

– – – –

– – – –

– – – –

2.5 SE i-FR

300 SE F / SE F-R

3.0 SE i-FR

SUZUKI 2-Stroke Models

Years

Size

Piston Kit

Piston Rings 56-R1228.PX 56-R1229.PX 56-R1256.PX 56-R1257.PX

Piston Pin

Piston Clips 56-0167.PX 56-0167.PX 56-0170.PX 56-0170.PX 56-0174.PX 56-0174.PX 56-0181.PX 56-0181.PX 56-0181.PX 56-0181.PX Piston Clips 56-0176.PX 56-0176.PX 56-0176.PX 56-0187.PX 56-0187.PX 56-0185.PX 56-0185.PX 56-0185.PX 56-0185.PX 56-0185.PX

Small End Bearing

RM 60 RM 65

2003

43mm 56-W648.A.PX

– –

56-6308.PROX 56-6308.PROX

2003 - 05 44.5mm 56-W752.A.PX

RM 80 (82cc)

1991 - 01 47.5mm

56-W645+P0.PX

56-715.PR 56-715.PR

RM 85 RM 100 RM 125 RM 125 RM 250 RM 250 RM 250 RM 250

2002 - 23 48mm 56-W806.A.PX

56-821.PROX 56-823.PROX 56-800.PROX 56-800.PROX 56-8090.PROX 56-8090.PROX 56-8090.PROX 56-8090.PROX

2003

52.5mm 56-W651.A.PX

2000 - 03 54mm 56-W754.A.PX 2004 - 11 54mm 56-W835.A.PX

56-R1258.PX 56-R1258.PX

56-0715.PR 56-0715.PR

1989 - 95 67mm

56-W642.00D.PX

1996 - 97 66.4mm 56-W614.A.PX

56-R1215.00 56-R1215.00 56-R1259.PX Piston Rings 56-R1243.PX 56-R1260.PX 56-R1245.PX 56-R1261.PX 56-R1261.PX 56-R1221.PX 56-R1221.PX 56-R1221.PX 56-R1221.PX 56-R1221.PX

56-7924.PR 56-7924.PR

1998

66.4mm 56-W702.A.PX

2003 - 12 66.4mm 56-W742.A.PX

4-Stroke Models

Years

Size

Piston Kit

Piston Pin 56-7968.PR

Small End Bearing

RM-Z 250 (Std. Comp. 12.6:1) RM-Z 250 (Std. Comp. 13.4:1) RM-Z 250 (Std. Comp. 13.4:1) DR-Z 400 (Std. Comp. 12.2:1) DR-Z 400 (High Comp. 13.5:1) RM-Z 450 (Std. Comp. 12.2:1)

2004 - 06 77mm 56-W4842.A.PX 2007 - 09 77mm 56-W4921.A.PX 2010 - 24 77mm 56-W951.A.PX 2000 - 22 90mm 56-W4713.A.PX

– – – – – – – – – –

56-6500.PR

– –

2000 - 22 90mm

56-W4713.PX.HC

2008 - 12 96mm 56-W4953.B.PX 2008 - 12 96mm 56-W307.B.PX 2013 - 24 96mm 56-W4955.B.PX 2010 - 19 96mm 56-W4953.B.PX 2010 - 19 96mm 56-W307.B.PX

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

(High Comp)

RM-Z 450 (Std. Comp. 12.5:1) RMX 450 Z (Std. Comp. 12.2:1)

(High Comp. 13.2:1)

*Please visit our website for current prices E7a

www.oro2u.com

Tel: 01597 822 666

Fax: 01597 825 224

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