ORO2U Dirt Catalogue - Section E - Engine and Performance.

Piston Kits

Namura

KTM 2-Stroke

Piston Type

Years

Size

Piston Kit

Oem Ref

Piston Rings

Small End Bearing

50 SX Pro JR & SR LC

2001 - 05 39.50mm

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

56-W803 56-W803 56-W803 56-W803 56-W803 56-W803 56-W803 56-W802 56-W011 56-W746 56-W313 56-W746 56-W313 56-W012 56-W012 56-W314 56-W314 56-W740 56-W010 56-W740 56-W010 56-W835 56-W010 56-W036 56-W036 56-W036 56-W770 56-W770 56-W770 56-W770 56-W825 56-W825

56-R729 56-R729 56-R729 56-R729 56-R729 56-R729 56-R729 56-R729 56-R730 56-R731 56-R731 56-R731 56-R731 56-R703 56-R703 56-R7712 56-R7712 56-R723 56-R722 56-R723 56-R722 56-R704 56-R722 56-R732 56-R732 56-R732 56-R7710 56-R7710 56-R7710 56-R7710 56-R7711 56-R7711 56-R7711 56-R7710 56-R7710

56-847 56-846 56-846 56-846 56-846 56-846 56-846 56-846 56-827 56-827 56-827 56-827 56-827 56-821 56-821 56-821 56-821 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-800 56-844

50 Mini / JR / SR Adventure

2002 2002 2003

39.50mm 39.50mm 39.50mm

50 Mini Adventure GS

50 SX, Mini, SR & JR Adventure 50 SX, Mini & SR Adventure 50 SX, SX JR, Mini ADV, SR ADV.

2004 - 05 39.50mm 2006 - 07 39.50mm

50 SX, SX JR, SX Mini LC

2008

39.50mm

50 SX 60 SX 65 SX 65 SX 65 XC 65 XC 85 SX 85 XC 105 SX 105 XC 125 EXC

2009 - 23 39.50mm 1997 - 99 43.50mm 2000 - 08 45mm 2009 - 23 45mm

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

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

2008 2009

45mm 45mm

2003 - 24 47mm 2008 - 09 47mm 2004 - 11 52mm 2008 - 09 52mm 1994 - 00 54.25mm 2001 - 16 54mm 1994 - 00 54.25mm 2001 - 24 54mm 2001 - 14 54mm 2017 - 24 54mm 2007 - 08 56mm 2009 - 15 56mm 2010 - 15 56mm 1998 - 05 64mm 2006 - 16 64mm 1998 - 02 64mm 2003 - 08 64mm 1998 - 02 64mm 2003 - 05 64mm 2006 - 14 64mm 2006 - 09 64mm 2006 - 15 64mm 1990 - 94 67.5mm 1996 - 99 67.5mm 1990 - 94 67.5mm 1996 - 99 67.5mm 2000 - 06 66.4mm 2007 - 24 66.4mm 1990 - 94 67.5mm 1990 - 94 67.5mm 2000 - 05 66.4mm

125 EXC Dual Ring

125 SX

125 SX Dual Ring

125 SX GP Series Only

125 XC-W

144 SX 150 SX

150 XC / XC-W

200 EXC 200 EXC 200 MXC 200 MXC

.NT .NT .NT .NT

.NT

.NT

56-844

200 SX 200 SX 200 SX 200 XC

.NT .NT .NT

.NT

56-844

.NT

56-W825 56-W770 56-W770 56-W601 56-W694 56-W601 56-W694 56-W774 56-W824 56-W601 56-W601 56-W774 56-W824 56-W601 56-W694 56-W774 56-W824 56-W774 56-W824 56-W824 56-W824 56-W824 56-W854 56-W854 56-W854 56-W854 56-W854

56-844

.NT .NT

– –

200 XC-W 250 EGS 250 EGS 250 EXC 250 EXC 250 EXC

.PR .PR .PR .PR

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

56-R724 56-R724 56-R724 56-R724 56-R725 56-R725 56-R724 56-R724 56-R725 56-R725 56-R724 56-R724 56-R725 56-R725 56-R725 56-R725 56-R725 56-R725 56-R725

56-802 56-802 56-802 56-802 56-802 56-802 56-802 56-802 56-802 56-802 56-802 56-802 56-802 56-802

250 EXC Single Ring

250 GS 250 MX

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

.PR .PR

250 MXC

250 R Freeride

2014

66.4mm

250 SX 250 SX 250 SX

1990 - 94 67.5mm 1996 - 99 67.5mm 2000 - 02 66.4mm 2003 - 24 66.4mm 2000 - 02 66.4mm 2003 - 07 66.4mm 2008 - 16 66.4mm 2006 - 24 66.4mm 2006 - 12 66.4mm 2004 - 23 72mm 2004 - 05 72mm 2023 - 24 72mm 2008 - 24 72mm 2008 - 24 72mm

.PR .PR

250 SX Single Ring

250 SXS 250 SXS 250 SXS

.SI

56-802

250 XC / XC-W Single Ring 250 XCW-E Single Ring

.SI

56-802

300 EXC 300 MXC

– – – – –

.SI .SI .SI .SI .SI

56-802 56-802 56-802 56-802 56-802

300 SX 300 XC

300 XC-W

*Please visit our website for current prices

E-mail: sales@oro2u.com

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