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.

BETA Models - 2 Stroke RK6 Enduro-K50-ST50

Piston Type

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

1995 - 97 39.5mm 1998 - 02 39.5mm 2018 - 24 54mm 2019 - 26 62mm 2013 - 17 66.4mm 2018 - 25 66.4mm 2013 - 17 72mm 2018 - 21 72mm 1995 - 97 72.5mm

.V .V .V

715036 715036 711127

22171A

56-R9030 56-R9030 56-R9307 56-R9311 56-R9311 56-R9312 56-R9312 56-R9031 56-R9032

72047 72047 72047 72047 72047 72047 72047 72047 72047 72047 72047 72047 72047 72065 72025 72071

RK6 Enduro

22525AB

RR 125 RR 200 RR 250 RR 250 RR 300 RR 300

.A.V

. VERTEX . VERTEX

56-W8813

56-800 56-844 56-8020 56-8020 56-8020 56-8020

24521A 24390A 24384A 24391A 24385A 22176A 22436A 24390A 24384A 24569A 24746A 24391A 24385A 24569A

.V .V

. VERTEX . VERTEX . VERTEX . VERTEX

. VERTEX . VERTEX . VERTEX . VERTEX

711125 711125 715372 715372 715372 715372 715372 715372 715372 56-7924 56-7924 56-7924 56-7924

.V .V .V .V

Tecno-ALP Trial Zero 270 Trial Xtrainer 250 2T Xtrainer 250 2T

76mm

2017

66.4mm

53010006640 53010006640 53010007300 56510007300

2018 - 25 66.4mm 2022 - 25 73mm

. VERTEX . VERTEX

56-8020 56-8020

RR 300 2T

2026

Enduro RR 300 2T

73mm

Xtrainer 300 2T Xtrainer 300 2T Xtrainer 300 2T

2015 - 17 72mm 2018 - 21 72mm 2022 - 25 73mm Years Size 2006 - 12 54mm 2005 - 07 75mm 2005 - 07 75mm 2005 - 07 77mm 2016 - 26 88mm

.V .V

56-R9312 56-R9312

53010007300

. VERTEX

56-8020

Models - 4 Stroke

Piston Kit

Piston Rings Piston Pin

Piston Clips

Small End Bearing

RR 125-RE-ALP Motard-Urban

.5400 715262

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

23349

56-R9303 56-R9309 56-R9309

72049 72075 72075 72075 72098 72098 72099 72075 72075 72099 72075 72075 72075

.V .V

711140 711140 711140 715431 715431 715436 715108 715108 415436 711140 711140 711140

RR 250 Std Comp. RR 250 Hi Comp. RR 250 Big Bore.

22978A 22980A

56-R917.V

22979200

RR 350 RR 390 RR 430

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

.Each .Each

24386A

56-R9313 56-R9313 56-R9314 56-R9315 56-R9315 56-R9316

2016 - 26 88mm 24387A 2015 - 26 95mm 24388A

2005 - 09 89mm 2005 - 09 89mm

RR 450 Std Comp. 11.0:1 RR 450 Hi Comp. 12.0:1

23329A 23340A

2015 - 26 100mm 24389A

RR 480

2005 - 09 95mm

.V .V

RR 525 Std Comp. 11.0:1 RR 525 Hi Comp. 12.0:1

22942A

56-R915 56-R915

2005 - 09 95mm 22969A 2005 - 08 97mm 22958200

.V

RR 525 Std Comp. 11.0:1 (Big Bore)

56-R9318

CAGIVA Models - 2 Stroke

Piston Type

Years

Size

Piston Kit 21600A 21889A 21757AB

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

Cross 125 Cross 125 Cross 250

1984 - 88 1988 - 91

56mm 56mm

.V .V .V

711121 711121 711125

72027 72027 72048

56-R902 56-R902 56-R912

1985 - 91 70mm

.EACH

COBRA Models - 2 Stroke

Piston Type

Years

Size

Piston Kit 24105A 24107AB 24106AB 24107AB

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

CX 50SR

2006 - 17 39mm 2007 - 09 44.5mm 2010 - 11 43mm 2012 - 16 44.5mm

CX 65 CX 65 CX 65

*Please visit our website for current prices

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

www.oro2u.com

Tel: 01597 822 666

Fax: 01597 825 224

E60

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