ORO2U Dirt Catalogue - Section E - Engine and Performance.

Piston Kits

Vertex

Vertex Piston Kits - 2 Stroke As the OE supplier of 2-stroke pistons to KTM, VERTEX pistons has an outstanding reputation for quality and performance. Each gravity cast piston is created with only premium aluminium alloys utilizing an 12-21% silicon content. The silicon content in VERTEX pistons is crucial to the quality of the piston - it’s critical in decreasing thermal expansion which, when an engine reaches normal operating temperatures, can change the geometry of the piston. Controlling this expansion means VERTEX pistons can be run at tighter tolerances for more power, less noise and a longer lifespan of the piston. Vertex Piston Kits - 4 Stroke When it comes to power and performance, VERTEX 4 stroke pistons are hard to beat. Forged to the highest quality 2618 aluminium alloy, VERTEX pistons are perfectly suited to handle the rigors and high pressures of todays modern 4-stroke engines. To aid in the break-in process, and reduce wear, VERTEX pistons utilizes a unique Molybdenum Disulphide (MOS2) coating on the piston skirt.

HM MOTO Models - 2 Stroke

Piston Type

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

CRE 50 CRE 260

1995 - 04 40.3mm 1989 - 00 68mm

.V

715038 56-7924

22088A 22227A

56-R9335

72025 72074

.EACH

.V

. VERTEX

56-R911

Models - 4 Stroke

Piston Kit

Piston Rings Piston Pin

Piston Clips

Piston Type

Years

Size

CRM 125 Derapage Liquid Cooled Std. Comp. 14.1:1 CRF 125Z-CRE 125RR - Locusta Liquid Cooled High Comp. 16.1:1

52mm

.V

715029

23935A

56-R9329

72050

52mm

.V

715029

23516A

56-R9329

72050

HONDA Models - 2 Stroke

Piston Type

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

CR 80

1986 - 02 46mm 1986 - 02 47mm 2003 - 07 47.5mm 2003 - 07 49.5mm 1990 - 91 54mm 1992 - 99 54mm 1992 - 99 54mm 1992 - 99 54mm 1992 - 99 54mm 2000 - 03 54mm 2000 - 03 54mm 2000 - 03 54mm

.V .V

715084 715378 715378 715378 711127 711127 711127 711127 711127 711127 711127 711127 715389 711127 711127 711127 711127 711127 711127 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924 56-7924

. VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX

22446A 22499A 22863A

56-R9338 56-R9339

72073 72073 72074 72074 72074 72074 72074 72074 72071 72071 72071 72074 72074 72074 72074 72074 72050 72050 72050 72050 72071 72071 72071 72071 72071 72071 72071 72071 72071 72071 72071 72071

56-821 56-821 56-821 56-821 56-814 56-814 56-814 56-814 56-814 56-814 56-814 56-814 56-814 56-814 56-814 56-814 56-814 56-814 56-8010 56-8010 56-8010 56-8010 56-8010 56-8010 56-8010 56-8010 56-8010 56-8010 56-8010 56-828 56-828

CR 80 (USA)

CR 85

.V

56-R906

CR 85 ( Big Bore)

.V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V

22866200

56-R9341 56-R9332 56-R9332 56-R9332 56-R9332 56-R9332 56-R9332 56-R9332 56-R9332 56-R9332 56-R9332 56-R9332 56-R9332 56-R9332 56-R9332 56-R9344 56-R9311 56-R9311 56-R9311 56-R9311 56-R9311 56-R9311 56-R9311 56-R9311 56-R9311 56-R9311 56-R9311 56-R9349 56-R9349

CR 125 CR 125

+00A.V

56-W595 22189A 22190A 22358A 22548A 22685A 22687A 22548A 22995A 22996A 22997A 23140A 22996A 22997A 23265A 22153A 22387A 22581A 22455A 22653A 22809A

CR 125 (W/O Port)

Race Race

CR 125 CR 125

Pro Race

CR-CRE 125

CR-CRE 125 (W/O Port)

Race

CR 125

Pro Race

CR-CRE 125 CR-CRE 125 CR-CRE 125 CR-CRE 125 CR-CRE 125 CR-CRE 125 CR-CRE 144 CR-CRE 250 CR-CRE 250 CR-CRE 250 CR-CRE 250 CR-CRE 250 CR-CRE 250 CR-CRE 250 CR-CRE 250 CR-CRE 250 CR-CRE 250 CR-CRE 250 CR-CRE 500 CR-CRE 500

2004 2004 2004

54mm 54mm 54mm

Race

Pro Race

2005 - 07 54mm 2005 - 07 54mm 2005 - 07 54mm 2004 - 07 57mm 1986 - 94 66.4mm 1995 - 96 66.4mm 1997 - 01 66.4mm 1997 - 01 66.4mm 1997 - 01 66.4mm 2002 - 04 66.4mm

Race

Pro Race Pro Race

.EACH .EACH .EACH .EACH .EACH .EACH .EACH .EACH .EACH .EACH .EACH

. VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX

.V .V .V .V .V .V .V .V .V .V .V

. VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX . VERTEX

Race

Pro Race

Race

2002 - 04 66.4mm 22810A

Pro Race

2002 - 04 66.4mm 2005 - 07 66.4mm 2005 - 07 66.4mm 2005 - 07 66.4mm

22811A 23133A 23137A 23138A

Race

Pro Race

1985 - 01 89mm 22447 1985 - 01 89mm 22458

.8900 711134 .8900 711134

. VERTEX . VERTEX

Race

* Note; Most Kits are available from standard size up to +2.00mm over size *

*Please visit our website for current prices

E-mail: sales@oro2u.com

www.oro2u.com

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