ORO2U Dirt Catalogue - Section E - Engine and Performance.

Piston Kits

Wiseco Racer Elite

Wiseco 4-Stroke Racer Elite Series Piston Kits

Wiseco 2-Stroke Racer Elite Series Piston Kits The Latest In Piston Technology • Engineered to be the most advanced 2-Stroke Piston on the market! • Optimized design for extreme conditions and racing applications. • ArmorFit™ skirt coating conforms to the bore for the ultimate in piston control and wear. • ArmorPlating® coating protects and improves performance in 3 main areas:

The Latest In Piston Technology • 100% fully machined billet piston. • Dyno Proven Horsepower improvement along with High Engine Load Durability. • Reduced Friction for increased performance - the first and only asymmetrical piston in the market for 250cc and 450cc applications! • Customized Top Piston Ring and Matching Precision Machined Ring Groove provide improved ring seal, equals Power Increases! • ArmorGlide® Skirt Coating for Optimum Piston Performance, Reducing Friction Improving Power! • DLC Coated Wrist Pin - F1 technology offering the best in friction reduction and reduced wear.

» Protects the crown from harmful detonation » Improves pinbore for decreased wear and bore deformation » Enhanced ring real for long life and performance • Improved Performance utilizing premium quality rings with enhanced dimensional control, which results in improved sealing and power increases.

SUZUKI 2-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

RM 65 RM 85 RM 100 RM 125 RM 250

2003 - 05 44.5mm 56-W752.WI.ELIT 2002 - 22 48mm 56-W806_000.WIE 2003 - 05 52.5mm 56-W651.WI.1E 2004 - 10 54mm 56-W835.WIE 2003 - 10 66.4mm 56-W823.WIE

56-7914

56-005.WI

56-7992.WI 56-7995.WI 56-807.WI 56-800.WI 56-809.WI

56-R452.WI

56-715.WI 56-715.WI

56-003 56-003 56-002

56-R202

56-R405+P0.1.WI

56-722.WI.S668

56-R441

56-781

56-0153.WI

4-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips 56-0162.WI

Small End Bearing

RM-Z 250 Comp. 14.5:1 RMX 450Z Comp. 14:1 RM-Z 450 Comp. 14:1 RM-Z 450 Comp. 14:1

2010 - 22 77mm 2010 - 18 96mm 2008 - 12 96mm 2013 - 23 96mm

56-W951.WI.RCE 56-W4953.WI.RE 56-W4953.WI.RE 56-W129.WI.RE

56-R050 56-R059 56-R059 56-R059

– – – –

– – – –

56-009 56-009 56-009

YAMAHA 2-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

YZ 85

2002 - 22 47.5mm 56-W805_000.WIE 2002 - 22 52.5mm 56-W805_550.WIE 2005 - 21 54mm 56-W845.WIE 2020 - 22 54mm 56-W845.WIE 1999 - 22 66.4mm 56-W742.WIE 2016 - 22 66.4mm 56-W742.WIE

56-R525 56-R202

56-708

56-003 56-003 56-002 56-002

56-821.WI 56-821.WI 56-814.WI 56-814.WI 56-801.WI 56-801.WI

Big Bore

56-715.WI

YZ 125

56-R405+P0.1.WI 56-R405+P0.1.WI

56-722.WI.S668 56-722.WI.S668

YZ 125X

YZ 250

56-R441 56-R441

56-781 56-781

56-0153.WI 56-0153.WI

YZ 250X

4-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips 56-0162.WI 56-0162.WI 56-0162.WI 56-0162.WI 56-0162.WI 56-0162.WI 56-0162.WI 56-0162.WI 56-0162.WI 56-0153.WI 56-0153.WI 56-0153.WI 56-0153.WI 56-0153.WI 56-0153.WI 56-0153.WI

Small End Bearing

WR 250F Comp. 14.5:1 WR 250F Comp. 14.5:1

2015 - 17 77mm

56-W4961.WI.RE 56-W6722.WI.HCE 56-W8812.RE.HC 56-W4961.WI.RE 56-W6722.WI.HCE 56-W8812.RE.HC 56-W4961.WI.RE 56-W6722.WI.HCE 56-W8812.RE.HC 56-W4963.WI.RE 56-W4965.WI.RE 56-W261.WI.RE 56-W4963.WI.RE 56-W4965.WI.RE 56-W4963.WI.RE 56-W4965.WI.RE

56-R050 56-R050 56-R050 56-R050 56-R050 56-R050 56-R050 56-R050 56-R050 56-R051

– – – – – – – – – – – – – – – –

- - - - - - - - - - - - - - - -

2018

77mm

WR 250F

2020 - 22 77mm 2014 - 15 77mm 2016 - 18 77mm 2019 - 22 77mm 2015 - 16 77mm 2017 - 19 77mm 2020 - 22 77mm 2016 - 18 97mm 2019 - 20 97mm 2010 - 13 97mm 2014 - 17 97mm 2018 - 19 97mm 2016 - 18 97mm 2019 - 20 97mm

YZ 250F Comp. 14.5:1 YZ 250F Comp. 14.5:1 YZ 250F Comp. 14.5:1 YZ 250FX Comp. 14.5:1 YZ 250FX Comp. 14.5:1

YZ 250FX

WR 450F Comp. 14:1 WR 450F Comp. 14:1 YZ 450F Comp. 14:1 YZ 450F Comp. 14:1 YZ 450F Comp. 14:1 YZ 450FX Comp. 14:1 YZ 450FX Comp. 14:1

56-R535.WI

56-R051 56-R051

56-R535.WI

56-R051

56-R535.WI

*Please visit our website for current prices E22

www.oro2u.com

Tel: 01597 822 666

Fax: 01597 825 224

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