ORO2U Dirt Catalogue - Section E - Engine and Performance.

Vertex

Piston Kits

Vertex Piston Kits VERTEX pistons have an outstanding reputation for quality and performance. Each gravtiy 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. When it comes to power and perforance, VERTEX pistons are hard to beat. Forged to the highest quality 2618 aluminium alloy. To aid in the break-in process, and reduce wear, VERTEX pistons utilizes a unique Molybdenum Disulphide (MOS2) coating on the piston skirt.

KTM Models - 2 Stroke

Piston Type Years Size

Piston Kit

Piston Rings 56-R9424.V 56-R9426.V 56-R9424.V 56-R9424.V 56-R9426.V 56-R9425.V 56-R9424.V 56-R9426.V 56-R9424.V 56-R9424.V 56-R9426.V 56-R9424.V 56-R9424.V 56-R9426.V 56-R9424.V 56-R908.V 56-R908.V 56-R9311.V

Piston Pin

Piston Clips

Small End Bearing

EXC 150 TPI

2020

58mm 24101A

715389

72071

56-800. VERTEX

EXC 150 TPI

Race

2020

58mm 24233A

715389

72071

56-800. VERTEX

EXC 150 TPI

2020 - 25 58mm 24519A

715389

72071

56-800. VERTEX

SX 144 / 150

2007 - 15

56mm

23383A

715389

72071

56-800. VERTEX

SX 150

2016 - 22 58mm 24101A

715389

72071

56-800. VERTEX

SX 150 (Single Ring)

Race

2016 - 22 58mm 24233A

715389

72071

56-800. VERTEX

XC-W 150

2016 - 23 58mm 24101A

715389

72071

56-800. VERTEX

XC-W 150 (Single Ring)

Race

2016 - 23 58mm 24233A

715389

72071

56-800. VERTEX

XC-W 150 TPI

2020 - 23 58mm 24101A

715389

72071

56-800. VERTEX

XC-W 150 TPI (Single Ring)

Race

2020 - 23 58mm 24233A 1998 - 16 64mm 22926A 1998 - 16 64mm 22925A 2000 - 05 66.4mm 22650A 2006 - 18 66.4mm 23630A 2006 - 18 67.5mm 23630110 2018 - 25 66.4mm 23630A 2018 - 25 66.4mm 24657A 2018 - 25 67.5mm 23630110 1990 - 94 67.5mm 22442A 1996 - 99 67.5mm 22459A 2000 - 02 66.4mm 22649A 2003 - 04 66.4mm 22909A

715389 711147 711147

72071 72055 72055

56-800. VERTEX 56-844.VERTEX

EXC 200 SXC 200 EXC 250 EXC 250

72074.EACH 72048.EACH 72074.EACH 72048.EACH 72048.EACH 72074.EACH

56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX 56-8020. VERTEX

56-7924. VERTEX 56-7924. VERTEX 56-7924. VERTEX 56-7924. VERTEX 56-7924. VERTEX 56-7924. VERTEX

56-R9399. VERTEX

EXC 250 (Big Bore)

56-R904.V

EXC 250 TPI EXC 250 TPI

56-R9399. VERTEX 56-R9399. VERTEX

Pro Race

EXC 250 TPI (Big Bore)

56-R904.V 56-R904.V 56-R904.V 56-R9311.V 56-R9311.V 56-R9311.V

SX-GS 250 SX-GS 250

711133 711133

72060 72060

72074.EACH 72048.EACH 72048.EACH 72048.EACH 72048.EACH 72074.EACH 72048.EACH 72048.EACH 72048.EACH 72074.EACH 72048.EACH 72048.EACH 72048.EACH 72048.EACH 72048.EACH 72048.EACH 72048.EACH 72048.EACH 72048.EACH

SX 250 SX 250 SX 250 SX 250 SX 250

56-7924. VERTEX 56-7924. VERTEX 56-7924. VERTEX 56-7924. VERTEX 56-7924. VERTEX 56-7924. VERTEX

2005

66.4mm 23121B

2006 - 26 66.4mm 23630A 2006 - 26 66.4mm 24657A 2006 - 26 67.5mm 23630110 2006 - 26 68mm 23630160 2006 - 26 66.4mm 23630A 2006 - 26 66.4mm 24657A 2006 - 26 67.5mm 23630110 2006 - 26 68mm 23630160 2014 - 17 66.4mm 23630A 2004 - 19 72mm 23375A 2004 - 19 72mm 23964A 2018 - 25 72mm 24244A 2018 - 25 72mm 24658A

56-R9399. V x2 56-R9399. V x2

Pro Race

SX 250 (Big Bore) SX 250 (Big Bore) XC-W 250 / TPI XC-W 250 / TPI

56-R904.V

53010006800 56-R9399. V x2 56-R9399. V x2

715372

56-7924. VERTEX 56-7924. VERTEX 56-7924. VERTEX

Pro Race

XC-W 250 / TPI (Big Bore) XC-W 250 / TPI (Big Bore)

56-R904.V

53010006800 56-R9399. V x2 56-R9312.V 56-R9312.V 56-R9312.V x2 56-R9312.V x2 56510007200 56-R9312.V

715372

56-7924. VERTEX 56-7924. VERTEX 56-7924. VERTEX 56-7924. VERTEX 56-7924. VERTEX

Freeride 250 R

EXC 300

EXC 300 (Single Ring)

Race

EXC 300 TPI EXC 300 TPI EXC 300 TPI

Pro Race

2026

72mm 24744A

711262

2023 - 26 72mm 24244A 1996 - 01 78mm 22541

56-8020. VERTEX

SX 300

56-7924. VERTEX

EXC 360 / 380

56-R9428.V

711132

* 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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