Vertex
Piston Kits
YAMAHA Models - 4 Stroke
Piston Type Years Size
Piston Kit
Piston Rings Piston Pin
Piston Clips
YZ 250F High Comp. 13.5:1 (2 Rings) YZ 250F High Comp. 13.5:1 (3 Rings)
2001 - 07 77mm 22812A 2001 - 07 77mm 22889A 2005 - 07 77mm 23127A 2005 - 13 80mm 23129A 2008 - 13 77mm 23391A 2008 - 13 77mm 23394A
56-R917.V 56-R9330.V 56-R9330.V 56-R9360.V 56-R9330.V 56-R917.V 56-R917.V 56-R9467.V 56-R9414.V 56-R9414.V 56-R9360.V 56-R9414.V 56-R9414.V 56-R9414.V 56-R9414.V 56-R9414.V 56-R9414.V 56-R9414.V 56-R9360.V 56-R9300.V 56-R9300.V 56-R9468.V 56-R9402.V 56-R9334.V 56-R9469.V 56-R9468.V 56-R9402.V 56-R9334.V 56-R9469.V 56-R9334.V 56-R9402.V 56-R9394.V 56-R9374.V 56-R9316.V 56-R9470.V 56-R9471.V 56-R9471.V 56-R9375.V 56-R9470.V 56-R9471.V 56-R9471.V 56-R9472.V 56-R9470.V 56-R9471.V 56-R9471.V 56-R9472.V 56-R9334.V 56-R9402.V 56-R9394.V 56-R9374.V 56-R9316.V 56-R9470.V 56-R9471.V 56-R9471.V 56-R9375.V 56-R9470.V 56-R9471.V 56-R9471.V 56-R9470.V 56-R9471.V 56-R9471.V 56-R9472.V 56-R9470.V 56-R9471.V 56-R9471.V
715381 715381 715381 715381 715381 715381 711195 715380 715380 711195 715380 711195 711195 711195 711195 711195 711195 711195 711195 715405 715405 711144 711144 711144 711144 711144 711144 711144 711144 715382 715382 715382 715382 715382 715405 715405 711193 715405 715425 715425 715425 715425 715425 715425 715425 715425 715382 715382 715382 715382 715382 715405 715405 711193 715405 715405 715405 711193 715425 715425 715425 715425 715425 715425 715425
72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72055 72074 72074 72090 72090 72090 72090 72090 72090 72090 72090 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074 72074
YZ 250F Std. Comp. 12.5:1
YZ 250F Std. Comp. 13.5:1 (Big Bore)
YZ 250F Std. Comp. 13.5:1
YZ 250F High Comp. 13.9:1 (2 Rings) YZ 250F High Comp. 14.2:1 YZ 250F Std. Comp. 13.5:1 YZ 250F High Comp. 14.2:1 YZ 250F High Comp. 14.4:1 YZ 250F Comp. 13.5:1 (Big Bore) YZ 250F Std. Comp. 13.5:1 YZ 250F High Comp. 14.2:1 YZ 250F High Comp. 13.7:1 YZ 250F High Comp. 13.7:1 YZ 250F Std. Comp. 13.8:1 YZ 250F High Comp. 14.7:1 YZ 250F High Comp. 13.85:1 YZ 250F Comp. 13.8:1 (Big Bore) WR 400F Std. Comp. 12.5:1 YZ 400F Std. Comp. 12.5:1 WR 426F Std. Comp. 12.5:1 WR 426F Std. Comp. 12.5:1
GP Racer Choice 2008 - 13 77mm 23738A
2014 - 15 77mm 23941A 2014 - 15 77mm 23942A
GP Racer Choice 2014 - 15 77mm 23954A
2014 - 18 80mm 23943A 2016 - 18 77mm 24109A 2016 - 18 77mm 24117A
GP Racer Choice 2016 - 18 77mm 24118A
US Pro
2017 - 18 77mm 24220A 2019 - 23 77mm 24371A 2019 - 23 77mm 24381A
GP Racer Choice 2019 - 23 77mm 24382A
2019 - 23 80mm 24405A 1998 - 02 92mm 22567A 1998 - 99 92mm 22567A 2001 - 02 95mm 22605A 2001 - 02 95mm 22651A 2001 - 02 95mm 22891A 2001 - 02 97mm 22962200 2000 - 02 95mm 22605A 2000 - 02 95mm 22651A 2000 - 02 95mm 22891A 2000 - 02 97mm 22962200 2003 - 15 95mm 22915A 2003 - 15 95mm 22896A 2003 - 15 97mm 22964A 2003 - 15 98mm 23404A 2005 - 15 100mm 23270500 2016 - 18 97mm 23958A 2016 - 18 97mm 23959A
Race
WR 426F High Comp. WR 426F (Big Bore)
YZ 426F Std. Comp. 12.5:1 YZ 426F Std. Comp. 12.5:1
Race
YZ 426F High Comp. YZ 426F (Big Bore)
WR 450F Std. Comp. 12.5:1
WR 450F High Comp. 13.5:1 (2 Rings) WR 450F Std. Comp. 12.5:1 (Big Bore) WR 450F Std. Comp. 12.5:1 (Big Bore) WR 450 Std. Comp. 12.5:1 (Big Bore XL)
WR 450F Std. Comp. 12.5:1 WR 450F High Comp. 13.5:1 WR 450F High Comp. 13.7:1
GP Racer Choice 2016 - 18 97mm 23960A
WR 450F Std. Comp. 12.5:1 (Big Bore)
2016 - 18 99mm 23655A 2019 - 20 97mm 24270A 2019 - 20 97mm 24271A
WR 450F Std. Comp. 12.7:1 WR 450F High Comp. 13.8:1 WR 450F High Comp. 13.3:1
GP Racer Choice 2019 - 20 97mm 24272A
WR 450F Comp. 12.7:1
2019 - 20 99mm 24369A 2021 - 23 97mm 24448A 2021 - 23 97mm 24449A
WR 450F Std. Comp. 12.8:1 WR 450F High. Comp. 13.8:1 WR 450F High. Comp. 13.45:1 WR 450F Std. Comp. 12.5:1 (Big Bore)
GP Racer Choice 2021 - 23 97mm 24450A
2021 - 23 99mm 24461A 2003 - 09 95mm 22915A 2003 - 09 95mm 22896A 2003 - 09 97mm 22964A 2003 - 09 98mm 23404A 2003 - 09 100mm 23270500 2010 - 13 97mm 23562A 2010 - 13 97mm 23563A
YZ 450F Std. Comp. 12.5:1
YZ 450F High Comp. 13.5:1 (2 Rings) YZ 450F Std. Comp. 12.5:1 (Big Bore) YZ 450F Std. Comp. 12.5:1 (Big Bore) YZ 450F Std. Comp. 12.5:1 (Big Bore XL)
YZ 450F Std. Comp. 12.5:1 YZ 450F High Comp. 13.5:1 YZ 450F High Comp. 13.6:1
GP Racer Choice 2010 - 13 97mm 23739A
2010 - 17 99mm 23655A 2014 - 16 97mm 23958A 2014 - 16 97mm 23959A
YZ 450F (Big Bore XL)
YZ 450F Std. Comp. 12.5:1 YZ 450F High Comp. 13.5:1 YZ 450F High Comp. 13.7:1 YZ 450F Std. Comp. 12.7:1 YZ 450F High Comp. 13.8:1 YZ 450F High Comp. 13.3:1
GP Racer Choice 2014 - 16 97mm 23960A
2018 - 19 97mm 24270A 2018 - 19 97mm 24271A
GP Racer Choice 2018 - 19 97mm 24272A
YZ 450F Std. Comp. 12.7:1 (Big Bore)
2018 - 19 99mm 24369A 2020 - 22 97mm 24448A 2020 - 22 97mm 24449A
YZ 450F Std. Comp. 12.8:1
YZ 450F High Comp. YZ 450F High Comp.
GP Racer Choice 2020 - 22 97mm 24450A
2020 - 22 97mm 24461A
YZ 450F Std. Comp. 12.8:1 (Big Bore)
* 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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