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 66mm 66mm
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
23353A 23302A 23304A 23520A
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 715378
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
.V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .V .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
56-R9355 56-R9355 56-R9356 56-R9357 56-R9355 56-R9355 56-R9356 56-R9358 56-R9358 56-R9358 56-R9358 56-R9359 56-R9361 56-R9361 56-R9362 56-R9363 56-R9358 56-R9364 56-R9364 56-R9364 56-R9359 56-R9360 56-R9361 56-R9367 56-R9364 56-R9364 56-R9364 56-R9365 56-R9366 56-R9364 56-R9364 56-R9364 56-R9368 56-R9368 56-R9368 56-R9361 56-R9369 56-R9368 56-R9368 56-R9368 56-R9361 56-R9369 56-R9503 56-R9503 56-R9503 56-R9361 56-R9369
2007 - 09 68mm 2007 - 09 72mm 2012 - 26 66mm 2012 - 26 66mm 2012 - 26 68mm 2004 - 07 78mm 2004 - 07 78mm 2008 - 09 78mm 2008 - 09 78mm 2004 - 09 79mm
23309600
23759A 23304A 23868A 22983A 23113A 23443A 23444A 23461A
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)
2004 - 09 80mm 22983200
2004 - 09 81mm 2004 - 09 84mm 2004 - 09 85mm
23535A
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
23232600 23318700
GP Racer Choice 2009
78mm
23529A 23510A 23561A 23730A 23589A 23788A 23653A 23702A 23961A 23962A 23963A 24080A 24081A 24119A 24121A 24120A 24273A 24274A 24275A 24322A 24348A 24516A
2010 - 13 76.8mm 2010 - 13 76.8mm
GP Racer Choice 2010 - 13 76.8mm
2010 - 13 79mm
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
2010 - 17 80mm 2010 - 17 83mm 2014 - 15 76.8mm 2014 - 15 76.8mm
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
US-Pro US-Pro
2015 - 17 76.8mm 2015 - 17 80mm 2016 - 17 76.8mm
CRF 250R Std. Comp. 14.6:1 (Big Bore)
CRF 250R Std. Comp. 13.8:1 CRF 250R High. 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
2016 - 17 76.8mm 2018 - 19 79mm 2018 - 19 79mm
GP Racer Choice 2018 - 19 79mm
2018 - 20 81mm 2018 - 20 82mm 2020 - 21 79mm
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
2020 - 21 79mm 24454A
GP Racer Choice 2020 - 21 79mm
24518A 24322A 24348A 24575A 24579A 24580A 24322A 24348A 24516A 24517A 24518A
2020 - 21 81mm 2020 - 21 82mm 2022 - 26 79mm 2022 - 26 79mm
.VER 711229 .VER 711195 .VER 715441 .VER 715441 .VER 715441 .VER 711229 .VER 711195
GP Racer Choice 2022 - 26 79mm
2022 - 26 81mm 2022 - 26 82mm 2020 - 21 79mm 2020 - 21 79mm
590279000003 715441 590279000003 715441 590279000003 715441
CRF 250RX High Comp. 14.4:1 CRF 250RX High Comp. 14.1:1
GP Racer Choice 2020 - 21 79mm
*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
E64
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