ORO2U ATV 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!

YAMAHA 2-Stroke Models

Years

Size

Piston Kit

Piston Rings 56-R1274.PX 56-R1275.PX

Piston Pin

Piston Clips 56-0176.PX 56-0177.PX Piston Clips 56-0185.PX 56-0185.PX 56-0185.PX 56-0185.PX 56-0187.PX 56-0187.PX 56-0187.PX 56-0191.PX 56-0192.PX 56-0192.PX 56-0192.PX

Small End Bearing

YFS 200 Blaster YFZ 350 Banshee

1988 - 06 66mm 56-W573+000.PX 1987 - 06 64.5mm 56-W513+050.PX

56-0720.PROX 56-0720.PROX

56-831.PROX 56-831.PROX

4-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Small End Bearing

YFM 350 Warrior (Std. Comp. 9.2:1) YFM 350 Raptor (Std. Comp. 9.2:1) YFM 350 Bruin (Std. Comp. 9.2:1) YFM 350 Grizzly (Std. Comp. 9.2:1) YFZ 450 (Std. Comp. 12.0:1) YFZ 450 (Std. Comp. 11.4:1) YFZ 450R (Std. Comp. 11.6:1)

1987 - 04 83.5mm 56-W4419+050.PX 2005 - 13 83.5mm 56-W4419+050.PX 2004 - 06 83.5mm 56-W4419+050.PX 2007 - 14 83.5mm 56-W4419+050.PX 2004 - 09 95mm 56-W4865+00B.PX 2012 - 13 95mm 56-W4865+00B.PX 2009 - 23 95mm 56-W4865+00B.PX 1998 - 01 95mm 56-W4596.000.PX 2001 - 05 100mm 56-W8507+00A.PX 2002 - 06 100mm 56-W8507+00A.PX 2004 - 07 100mm 56-W8507+00A.PX 2006 - 14 102mm 56-W4902+00B.PX 2015 - 23 102mm 56-W9860.A.PX 2007 - 13 102mm 56-W4902+00B.PX 2014 - 15 102mm 56-W9860.A.PX 2019 - 23 102mm 56-W9860.A.PX 2019 - 23 102mm 56-W9860.A.PX 2008 - 13 102mm 56-W4902+00B.PX 2014 - 23 102mm 56-W9860.A.PX 2021 - 22 93mm 56-W4987.A.PX

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

56-0735.PROX 56-0735.PROX 56-0735.PROX 56-0744.PROX

YFM 600 F Grizzly

YFM 660 Raptor (Std. Comp. 9.2:1) YFM 660 F Grizzly (Std. Comp. 9.1:1) YXR 660 Rhino (Std. Comp. 9.1:1) YFM 700 R Raptor (Std. Comp. 9.2:1) YFM 700 R Raptor (Std. Comp. 10.0:1) YFM 700 F Grizzly (Std. Comp. 9.2:1) YFM 700 F Grizzly (Std. Comp. 10.0:1) YFM 700 F Grizzly (Std. Comp. 10.0:1) YFM 700 Kodiak (Std. Comp. 10.0:1) YXR 700 Rhino (Std. Comp. 9.2:1) YXM 700 Viking (Std. Comp. 10.0:1)

Wolverine RMAX 2/4

*Please visit our website for current prices E4

www.oro2u.com

Tel: 01597 822 666

Fax: 01597 825 224

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