ORO2U Dirt Catalogue - Section E - Engine and Performance.

Piston Kits

Vertex

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 - 4 Stroke

Piston Type Years Size

Piston Kit

Piston Rings Piston Pin

Piston Clips

EXC 250F Std. Comp. 14.5:1 (Big Bore)

2014 - 16 81mm 23867A 2017 - 23 78mm 24196A 2017 - 23 78mm 24114A

56-R9361.V 56-R9406.V 56-R9406.V 56-R9406.V 56-R9429.V 56-R9429.V 56-R9366.V 56-R9362.V 56-R9358.V 56-R9358.V 56-R9358.V 56-R9361.V 56-R9406.V 56-R9406.V 56-R9406.V 56-R9361.V

715441 715441 715441 711195 715402 715402 715402 715402 715441 715441 715441 715441 715441 715441 715441 715441

72106 72106 72106 72106 72055 72055 72055 72055 72106 72106 72106 72106 72106 72106 72106 72106 72106 72098 72098 72098 72098 72098 72098 72098 72098 72098 72098 72098 72098 72098 72098 72098 72098

EXC 250F Std. Comp. 12.8:1 EXC 250F High Comp. 13.5:1 EXC 250F High Comp. 13.2:1 SX 250F Std. Comp. 12.8:1 SX 250F High Comp. 13.3:1

GP Racer Choice 2017 - 23 78mm 24115A

2006 - 12 76mm 23235A 2006 - 12 76mm 23236A 2006 - 12 80mm 23274A 2006 - 12 84mm 23296800 2013 - 15 78mm 23757A 2013 - 15 78mm 23847A

SX 250F Std. Comp. 13.3:1 (Big Bore) SX 250F Std. Comp. 13.3:1 (Big Bore XL)

SX 250F Std. Comp. 13.9:1 SX 250F High Comp. 14.3:1 SX 250F High Comp. 14.5:1

GP Racer Choice 2013 - 15 78mm 23870A

SX 250F Std. Comp. 13.9:1 (Big Bore)

2013 - 15 81mm 23867A 2016 - 22 78mm 24097A 2016 - 22 78mm 24114A

SX 250F Std. Comp. 14.4:1 SX 250F High Comp. 14.7:1 SX 250F High Comp. 14.5:1

GP Racer Choice 2016 - 22 78mm 24115A

SX 250F Std. Comp. 14.4:1 (Big Bore)

2016 - 22 81mm 24142A

2023

SX 250F

81mm 24615A

590281000002 715441

EXC 350F Std. Comp. 12.3:1 EXC 350F High Comp. 12.8:1 EXC 350F Std. Comp. 12.3:1 EXC 350F High Comp. 13.1:1 EXC 350F Std. Comp. 14.0:1 EXC 350F High Comp. 15.1:1 EXC 350F Comp. 14.0:1 SX 350F Std. Comp. 13.5:1 SX 350F High Comp. 14.0:1 SX 350F High Comp. 14.5:1

2012 - 16 88mm 23711A 2012 - 16 88mm 23641A 2017 - 19 88mm 24213A 2017 - 19 88mm 24214A 2020 - 23 88mm 24098A 2020 - 23 88mm 24116A 2020 - 23 88mm 24238C 2011 - 12 88mm 23641A 2011 - 12 88mm 23642A

56-R9401.V 56-R9401.V 56-R9401.V 56-R9401.V 56-R9401.V 56-R9401.V 56-R9407.V 56-R9401.V 56-R9401.V 56-R9401.V 56-R9407.V 56-R9401.V 56-R9401.V 56-R9401.V 56-R9401.V 56-R9407.V

715431 715431 715431 715431 715431 715431 715431 715431 715431 715431 715431 715431 715431 715431 715431 715431

GP Racer Choice 2011 - 12 88mm 23734A

SX 350F Std. Comp. 13.5:1 (Big Bore)

2011 - 15 90mm 23656A 2013 - 15 88mm 23831A 2013 - 15 88mm 23848A 2016 - 22 88mm 24098A 2016 - 22 88mm 24116A 2016 - 22 90mm 24238A

SX 350F Std. Comp. 13.6:1 SX 350F High Comp. 14.1:1 SX 350F Std. Comp. 14.0:1 SX 350F High Comp. 15.1:1

SX 350F Std. Comp. 14.0:1 (Big Bore)

*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

E52

Made with FlippingBook - Online magazine maker