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.

HONDA Models - 4 Stroke

Piston Type Years Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

CRF 125R

2007

60mm 23353A

715378 715029 715029 715029 715084 715029 715029 715029 715380 715380 715380 715380 715380 715380 715380 715380 715380 715380 715380 715380 711195 715380 715441 715380 715380 715380 715380 711195 711195 711195 715380 715380 715380 711195 711195 711195 711229 711229 715441 715441 715441

72093 72093 72093 72093 72093 72093 72093 72093 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72106 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055

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

2007 - 09 2007 - 09

66mm 66mm

23302A 23304A

56-R9355.V 56-R9355.V 56-R9356.V 56-R9357.V 56-R9355.V 56-R9355.V 56-R9356.V 56-R9358.V 56-R9358.V 56-R9358.V 56-R9358.V 56-R9359.V 56-R9361.V 56-R9361.V 56-R9362.V 56-R9363.V 56-R9358.V 56-R9364.V 56-R9364.V 56-R9364.V 56-R9359.V 56-R9360.V 56-R9361.V 56-R9367.V 56-R9364.V 56-R9364.V 56-R9364.V 56-R9365.V 56-R9366.V 56-R9364.V 56-R9364.V 56-R9364.V 56-R9368.V 56-R9368.V 56-R9368.V 56-R9361.V 56-R9369.V 56-R9368.V 56-R9368.V 56-R9368.V

CRF 150R Std. Comp. 11.7:1 CRF 150R High Comp. 12.2:1 CRF 150R (Big Bore) CRF 150R (Big Bore XL) CRF 150R Std. Comp. 11.7:1 CRF 150R High Comp. 12.2:1

2007 - 09 68mm 23520A 2007 - 09 72mm 23309600

2012 - 23 66mm 2012 - 23 66mm

23759A 23304A

2012 - 23 68mm 23868A 2004 - 07 78mm 22983A 2004 - 07 78mm 23113A 2008 - 09 78mm 23443A 2008 - 09 78mm 23444A 2004 - 09 79mm 23461A 2004 - 09 80mm 22983200 2004 - 09 81mm 23535A 2004 - 09 84mm 23232600 2004 - 09 85mm 23318700

CRF 150R Std. Comp. 11.7:1 (Big Bore)

CRF 250R Std. Comp. 12.9:1 CRF 250R High Comp. 13.4:1 CRF 250R Std. Comp. 13.0:1 CRF 250R High Comp. 13.5:1

CRF 250R Std Comp. 13.0:1 (Big Bore) CRF 250R Std. Comp. 13.0:1 (Big Bore) CRF 250R Std. Comp. 13.0:1 (Big Bore)

CRF 250R (Big Bore XL) CRF 250R (Big Bore XXL) CRF 250R High Comp. 13.7:1 CRF 250R Std. Comp. 13.2:1 CRF 250R High Comp. 14.1:1 CRF 250R High Comp. 14.6:1

GP Racer Choice 2009

78mm 23529A

2010 - 13 76.8mm 23510A 2010 - 13 76.8mm 23561A

GP Racer Choice 2010 - 13 76.8mm 23730A

2010 - 13 79mm 23589A

CRF 250R High Comp. 13.5:1 (Big Bore) CRF 250R High Comp. 14.1 (Big Bore) CRF 250R Std. Comp. 13.2:1 (Big Bore) CRF 250R Std. Comp. 13.2:1 (Big Bore)

GP Racer Choice 2010 - 13 80mm 23788A

2010 - 17 80mm 23653A 2010 - 17 83mm 23702A 2014 - 15 76.8mm 23961A 2014 - 15 76.8mm 23962A

CRF 250R Std. Comp. 13.5:1 CRF 250R High Comp. 14.1:1 CRF 250R High Comp. 14.6:1 CRF 250R High Comp. 13.9:1

GP Racer Choice 2014 - 15 76.8mm 23963A

US-Pro US-Pro

2015 - 17 76.8mm 24080A 2015 - 17 80mm 24081A 2016 - 17 76.8mm 24119A

CRF 250R Std. Comp. 14.6:1 (Big Bore)

CRF 250R Std. Comp. 13.8:1 CRF 250R Std. Comp. 14.0:1 CRF 250R High Comp. 14.3:1 CRF 250R Std. Comp. 13.9:1 CRF 250R High Comp. 14.6:1 CRF 250R High Comp. 14.2:1

GP Racer Choice 2016 - 17 76.8mm 24121A

2016 - 17 76.8mm 24120A 2018 - 19 79mm 24273A 2018 - 19 79mm 24274A

GP Racer Choice 2018 - 19 79mm 24275A

2018 - 20 81mm 24322A 2018 - 20 82mm 24348A 2020 - 21 79mm 24516A 2020 - 21 79mm 24454A

CRF 250R Std. Comp. 13.9:1 (Big Bore) CRF 250R Std. Comp. 13.9:1 (Big Bore) CRF 250R Std. Comp. 13.9:1 CRF 250R High Comp. 14.4:1 CRF 250R High Comp. 14.1:1 CRF 250R Comp. 13.9:1 (Big Bore) CRF 250R Comp. 13.9:1 (Big Bore) CRF 250R Std. Comp. 13.8:1 CRF 250R High Comp. 14.4:1 CRF 250R High Comp. 14.1:1 CRF 250R Comp. 13.9:1 (Big Bore) CRF 250R Comp. 13.9:1 (Big Bore) CRF 250RX Std. Comp. 13.85:1

GP Racer Choice 2020 - 21 79mm 24518A

2020 - 21 81mm 24322A 2020 - 21 82mm 24348A 2022 - 23 79mm 24575A 2022 - 23 79mm 24579A

56-R9361.VER 711229 56-R9369.VER 711195 56-R9503.VER 715441 56-R9503.VER 715441 56-R9503.VER 715441 56-R9361.VER 711229 56-R9369.VER 711195 590279000003 715441 590279000003 715441 590279000003 715441

GP Racer Choice 2022 - 23 79mm 24580A

2022 - 23 81mm 24322A 2022 - 23 82mm 24348A 2020 - 21 79mm 24516A 2020 - 21 79mm 24517A

CRF 250RX High Comp. 14.4:1 CRF 250RX High Comp. 14.1:1

GP Racer Choice 2020 - 21 79mm 24518A

*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

E46

Made with FlippingBook - Online magazine maker