ORO2U Dirt Catalogue - Section E - Engine and Performance.

Piston Kits

Namura

GASGAS 2-Stroke

Piston Type

Years

Size

Piston Kit

Oem Ref

Piston Rings

Small End Bearing

MC 50 MC 65 MC 85

2021 - 23 39.5mm 2021 - 23 45mm 2021 - 24 47mm 2000 - 11 54mm 2003 - 04 54mm 2002 - 10 54mm 2021 - 24 54mm 2000 - 11 54mm 1997 - 13 66.4mm 2021 - 23 66.4mm 2021 - 23 66.4mm 2022 - 23 66.4mm 2021 - 24 72mm 2021 - 24 72mm

.A.NT .A.NT .A.NT .A.NT .A.NT .A.NT .A.NT .A.NT .A.NT .A.NT .A.NT .A.NT .A.NT .A.NT

56-W802 56-W313 56-W012 56-W859 56-W859 56-W676 56-W010 56-W859 56-W824 56-W824 56-W824 56-W824 56-W854 56-W854

56-R729 56-R731 56-R703 56-R704 56-R704 56-R714 56-R722 56-R704 56-R725 56-R725 56-R725 56-R725

56-846

.SI .SI .SI .SI .SI .SI .SI .SI .SI .SI .SI .SI

56-821 56-836 56-836 56-836 56-800 56-836 56-801 56-802 56-802 56-802 56-802 56-802

EC 125 Domed Top Piston

Enduro Cross 125

MC 125 Flat Top Piston

MC 125 Dual Ring

ME 125 Domed Top Piston

EC 250 Single Ring EC 250 Single Ring EX 250 Single Ring MC 250 Single Ring EC 300 Dual Ring EX 300 Dual Ring

4-Stroke EC 250F

Piston Type Hyperdryve

Years

Size

Piston Kit 56-W9702 56-W9702 56-W265 56-W265 56-W4735 56-W4735 56-W4735 56-W4785 56-W4785

Oem Ref

Piston Rings

Small End Bearing

2010 - 15 77mm 2010 - 15 77mm 2021 - 23 78mm 2021 - 23 78mm 2021 - 24 88mm 2021 - 24 88mm 2022 - 24 88mm 2013 - 15 95mm 2013 - 15 95mm

.A

– – – – – – – – –

56-R728 56-R728

N Forged N Forged N Forged

.A.NF

EX 250F MC 250F EC 350F EX 350F MC 350F EC 450F

.A.NT .A.NT

Hyperdryve Hyperdryve Hyperdryve Hyperdryve

+00A.NT +00A.NT +00A.NT

.NT .NT .NT

56-R7718 56-R7718 56-R7718 56-R759 56-R759

.A.NT

N Forged

.A.NT.F

*Please visit our website for current prices

E-mail: sales@oro2u.com

www.oro2u.com E53

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