ORO2U Dirt Catalogue - Section E - Engine and Performance.

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 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.

KAWASAKI 2-Stroke KDX 50 (Does not have machined smooth dome)

Piston Type

Years

Size

Piston Kit

Oem Ref

Piston Rings

Small End Bearing

2003 - 06 41mm 56-W826+000.NT 1983 - 03 43mm 56-W648.A.NT 2000 - 23 44.5mm 56-W752.A.NT 1988 - 00 48mm 56-W644+A.NT 2001 - 13 48.5mm 56-W782.A.NT 2014 - 23 48.5mm 56-W879.00A.NT 1995 - 13 52.5mm 56-W651.A.NT 2014 - 21 52.5mm 56-W651.A.NT1 2022 - 24 52.5mm 56-W651.A.NT1

56-808.SI 56-808.SI 56-7992.SI 56-807.SI 56-807.SI 56-807.SI 56-807.SI 56-807.SI 56-807.SI 56-800.SI 56-800.SI 56-800.SI 56-800.SI

KX 60 KX 65 KX 80 KX 85 KX 85

13001-1536 13001-1630 13001-1497

56-R708 56-R707 56-R710 56-R709

13001-1664/0006

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KX 100 ( Twin Ring ) KX 100 ( Single Ring )

56-R763

– –

KX 112 KX 125 KX 125 KX 125 KX 125

1998 - 00 54mm 56-W741+00A.NT 13001-1524 2001 - 02 54mm 56-W783+00A.NT 13001-1597/1607/1642

56-R704 56-R704 56-R704 56-R704 56-R771 56-R706 56-R727

2003

54mm 56-W822.NT

13001-1634 13001-0009

2004 - 05 54mm 56-W834.A.NT 1996 - 03 54mm 56-W150.A.NT 1992 - 04 66.4mm 56-W617.A.NT 2005 - 08 66.4mm 56-W844.A.NT

KMX 125

KX 250 KX 250

13001-1375/1604/1645

56-881.SI 56-881.SI

4-Stroke

Piston Type

Years

Size

Piston Kit

Oem Ref

Piston Rings

Small End Bearing

KLR 250 KX 250F KX 250F KX 250F KX 250F KX 250F

1987 - 05 74mm 56-W4418.NT 2004 - 05 77mm 56-W4842.A.NT 2006 - 09 77mm 56-W4920.A.NT 2010 - 14 77mm 56-W952.A.NT 2015 - 16 77mm 56-W331.A.NT 2017 - 19 77mm 56-W9952.A.NT 2003 - 06 90mm 56-W4713.A.NT 2003 - 06 94mm 56-W4713_400.A 2006 - 18 77mm 56-W4980.A.N.HC 2008 - 19 77mm 56-W4980.A.N.HC

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56-R744 56-R728 56-R728

– – – – – – – – – –

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KLX 400 Comp. 11.3:1

13001-S006

56-R733

Big Bore, Hi-Comp 12.3:1

– – –

56-K112.94_RING

KX 450F Comp. 12.8:1 KLX 450 Comp. 12.8:1

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*Please visit our website for current prices E40

www.oro2u.com

Tel: 01597 822 666

Fax: 01597 825 224

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