Piston Kits
ProX
ProX Piston Kits ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy is used as is used for all major Japanese engine manufacturers. ProX piston kits are a first class solution to replace the original piston in your motorcycle. ProX piston kits for sleeved cylinders are available in standard size and a wide range of over sizes. ProX pistons for plated cylinders come in standard size, A, B, C, D & over sizes. All ProX piston kits are supplied complete with piston rings, wrist pin and circlips, ready to install!
ProX 2-Stroke Piston Kits
• ProX pistons are manufactured by the same factories in Japan that supply the OEMs. This ensures OEM quality but allows ProX to make improvements upon OEM designs when needed. • The majority of ProX 2-stroke pistons are cast from aluminum containing approximately 18% silicon. This material and manufacturing combination reduces thermal expansion, allowing pistons to be run at tighter tolerances and reducing wear. • ProX adds additional performance features to piston designs where they feel necessary. For example, some 2-stroke pistons will have wrist pin oiling holes drilled in the bottom of the pin towers. • A quality piston’s performance is only as good as the components it uses. ProX 2-stroke pistons come with OEM quality, Japanese rings to ensure durabilty and performance is consistent throughout the entire piston package.
BETA 2-Stroke Models
Years
Size
Piston Kit
Piston Rings
Piston Pin
Piston Clips 56-0166.PX 56-0174.PX 56-0181.PX 56-0181.PX 56-0181.PX 56-0181.PX 56-0181.PX 56-0181.PX
Small End Bearing
RR 50 Enduro RR 125 Enduro RR 250 Enduro
2005 - 16 40.3mm 56-W9850.130.PX 2018 - 23 54mm 56-W035.A.PX 2013 - 21 66.4mm 56-W9857.A.PX 2018 - 21 66.4mm 56-W9857.A.PX 2013 - 17 72mm 56-W9817.A.PX 2018 - 21 72mm 56-W6723.A.PX 2021 - 24 72mm 56-W6723.A.PX 2015 - 17 72mm 56-W9817.A.PX 2018 - 21 72mm 56-W6723.A.PX
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56-6306.PROX 56-800.PROX 56-8020.PROX 56-8020.PROX 56-8020.PROX 56-8020.PROX 56-8020.PROX 56-8020.PROX
56-R1223.PX 56-R1200.PX 56-R1200.PX 56-R1201.PX 56-R1201.PX 56-R1201.PX 56-R1201.PX
56-783.PX 56-7924.PR 56-7924.PR
Xtrainer 250
RR 300 Enduro RR 300 Enduro
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RX 300
Xtrainer 300 Xtrainer 300
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BETA 4-Stroke Models
Years
Size
Piston Kit
Piston Rings
Piston Pin
Piston Clips 56-0189.PX 56-0181.PX 56-0181.PX
Small End Bearing
RR 250 Enduro (+2mm Oversize) RR 350 Enduro (Std. Comp. 12.9:1) RR 350 Enduro (Std. Comp. 13.2:1) RR 390 Enduro (Std. Comp. 12.5:1) RR 400 Enduro (Std. Comp. 12.4:1) RR 430 Enduro (Comp. 11.9:1)
2005 - 07 77mm 56-W029_200.PX 2011 - 14 88mm 56-W9818.A.PX 2015 - 22 88mm 56-W9835.A.PX 2015 - 22 88mm 56-W9846.A.PX 2010 - 14 95mm 56-W9819.A.PX 2015 - 22 95mm 56-W9887.A.PX 2005 - 09 89mm 56-W178.A.PX
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56-R1202.PX
56-0725.PR 56-0725.PR
56-R1203.PX
56-7970.PR
56-0187.PX
RR 450 Enduro (Std. Comp.)
56-R1204.PX 56-R1204.PX 56-R1203.PX 56-R1205.PX 56-R1205.PX 56-R1206.PX 56-R1206.PX
56-7967.PR 56-7967.PR 56-7970.PR
56-0187.PX 56-0187.PX 56-0187.PX 56-0187.PX 56-0187.PX 56-0187.PX 56-0187.PX
(High Comp.)
2005 - 09 89mm
56-W178.B.PX.HI
RR 450 Enduro (Std. Comp. 12.0:1) RR 480 Enduro (Std. Comp. 11.9:1) RR 498 Enduro (Std. Comp. 12.0:1) RR 520 Enduro (Std. Comp. 12.0:1)
2010 - 14 95mm 56-W9820.A.PX 2015 - 22 100mm 56-W6724.A.PX 2012 - 14 100mm 56-W9821.A.PX 2010 - 11 100mm 56-W9821.A.PX 2005 - 09 95mm 56-W4731.A.PX
56-7970.PR 56-7970.PR
RR 525 Enduro (Std. Comp.) RR 525 Enduro (High Comp.)
56-7958 56-7958
2005 - 09 95mm
56-W216+00B.PX
*Please visit our website for current prices E2
www.oro2u.com
Tel: 01597 822 666
Fax: 01597 825 224
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