Piston Kits
Namura
Namura Piston Kits W hy replace your cylinder when you can replace the piston for a fraction of the cost and time? Namura offers direct replacements for the original equipment as well as hi-compression and a variety of oversizes to meet your ride’s needs. They are available in 0.25mm increments, from the -1 (0.25mm) through the -8 (2mm) oversize. We also carry B (0.01mm) and C (0.02mm) oversizes which help extend the life of your expensive coated cylinders; a selection of big bore piston kits is available for some applications. Combine this with the MOS2 coating and hard anodizing, Namura gives you a higher performance piston without the higher price. N amura piston kits come with the piston individually wrapped; a set of OEM quality rings packed in their own box, a wrist pin, and circlips.
Namura Hyperdryve 4-Stroke Piston Kits N amura is proud to bring you the next step in the evolution of powersport pistons. The Hyperdryve line of pistons was specifically designed as an alternative to the OE for applications that call for the use of forged internals. The major advantage of Hyperdryve pistons is the ability to hold up under temperatures never before seen by cast pistons, without the extra cost of forged equipment. H yperdryve pistons are composed of a new hypereutectic aluminum alloy developed for use in the space industry. Engineered to maintain its high tensile strength up to 700°F (370°C), 50% higher than a conventional cast piston, this gives Hyperdryve the strength to perform under operating conditions normally reserved for forged pistons. Hyperdryve is the exclusive line of pistons for 250 and 450cc motocross bikes, as well as select sport quads.
Namura N Forged 4-Stroke Piston Kits N amura Forged pistons offer dyno-proven gains in performance and durability over industry-standard 4032 forged pistons. Namura’s exclusive forged alloy offers lower expansion rates, allowing for tighter build tolerances and superior tensile and yield strength at operating temperatures. A ll new Forged pistons come with Namura’s signature features: 100% CNC-machine piston domes, hard anodized domes for reduced carbon build-up and heat resistance and M0S2 coated skirts for excellent break-in protection and properties.
BETA 2-Stroke RK6 Enduro 50cc
Piston Type
Years
Size
Piston Kit
Oem Ref
Piston Rings
Small End Bearing
1997 - 02 39.5mm 56-W803.A.NT 1996 - 99 39.5mm 56-W803.A.NT 2013 - 15 66.4mm 56-W824.A.NT
56-R729
56-846
ST 50 / Supermotard 50
–
–
RR 250
56-R725
56-802.SI
GASGAS 2-Stroke EC 125 Domed Top Piston
Piston Type
Years
Size
Piston Kit
Oem Ref
Piston Rings
Small End Bearing
2000 - 11 54mm 56-W859.A.NT 2003 - 04 54mm 56-W859.A.NT 2002 - 10 54mm 56-W676.A.NT 2000 - 11 54mm 56-W859.A.NT 1997 - 14 66.4mm 56-W824.A.NT
56-R704 56-R704 56-R714 56-R704 56-R725
56-836.SI 56-836.SI 56-836.SI 56-836.SI 56-801.SI
Enduro Cross 125
MC 125 Flat Top Piston ME 125 Domed Top Piston
EC 250 Single Ring
4-Stroke EC 250F
Piston Type Hyperdryve
Years
Size
Piston Kit
Oem Ref
Piston Rings
Small End Bearing
2010 - 15 77mm 56-W9702.A 2010 - 15 77mm 56-W9702.A.NF 2013 - 15 95mm 56-W4785.A.NT 2013 - 15 95mm 56-W4785.A.NT.F
56-R728 56-R728 56-R759 56-R759
– – – –
N Forged
Hyperdryve
EC 450F
N Forged
*Please visit our website for current prices E38
www.oro2u.com
Tel: 01597 822 666
Fax: 01597 825 224
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