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 56-W803.A.NT

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-R7712 56-R7712 56-R723 56-R722 56-R723 56-R722 56-R704 56-R722 56-R732 56-R732 56-R732

56-846 56-846 56-846 56-846 56-846 56-846 56-846 56-847 56-827

50 Mini / JR / SR Adventure

2002 2002 2003

39.50mm 56-W803.A.NT 39.50mm 56-W803.A.NT 39.50mm 56-W803.A.NT

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 56-W803.A.NT 2006 - 07 39.50mm 56-W803.A.NT

50 SX, SX JR, SX Mini LC

2008

39.50mm 56-W803.A.NT

50 SX 60 SX 65 SX 65 SX 65 XC 65 XC

2009 - 18 39.50mm 56-W802.A.NT 1997 - 99 43.50mm 56-W011.A.NT 2000 - 08 45mm 56-W746.A.NT 2009 - 20 45mm 56-W313.A.NT

56-827.SI 56-827.SI 56-827.SI 56-827.SI 56-821.SI 56-821.SI 56-821.SI 56-800.SI 56-800.SI 56-800.SI 56-800.SI 56-800.SI 56-800.SI 56-800.SI 56-800.SI 56-800.SI 56-844.NT

2008

45mm 56-W746.A.NT

2009 - 20 45mm 56-W313.A.NT 2003 - 20 47mm 56-W012.A.NT 2004 - 16 52mm 56-W314.A.NT 2008 - 09 52mm 56-W314.A.NT 1994 - 00 54.25mm 56-W740.A.NT 2001 - 14 54mm 56-W010.A.NT 1994 - 00 54.25mm 56-W740.A.NT 2001 - 14 54mm 56-W010.A.NT 2001 - 14 54mm 56-W835.A.NT 2016 - 20 54mm 56-W010.A.NT 2007 - 08 56mm 56-W036.A.NT 2009 - 15 56mm 56-W036.A.NT 2010 - 15 56mm 56-W036.A.NT 1998 - 05 64mm 56-W770.A.NT 2006 - 16 64mm 56-W770.A.NT 1998 - 02 64mm 56-W770.A.NT 2003 - 08 64mm 56-W770.A.NT 1998 - 02 64mm 56-W825.A.NT 2003 - 05 64mm 56-W825.A.NT 2006 - 14 64mm 56-W825.A.NT 2006 - 09 64mm 56-W770.A.NT 2006 - 15 64mm 56-W770.A.NT 1990 - 94 67.5mm 56-W601.A.NT 1996 - 99 67.5mm 56-W694.A.NT 1990 - 94 67.5mm 56-W601.A.NT 1996 - 99 67.5mm 56-W694.A.NT 2000 - 06 66.4mm 56-W774.A.NT 2007 - 20 66.4mm 56-W824.A.NT 1990 - 94 67.5mm 56-W601.A.NT 1990 - 94 67.5mm 56-W601.A.NT 2000 - 05 66.4mm 56-W774.A.NT

85 SX/XC 105 SX 105 XC 125 EXC

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

56-R7710.NT 56-R7710.NT 56-R7710.NT 56-R7710.NT 56-R7711.NT 56-R7711.NT 56-R7711.NT 56-R7710.NT 56-R7710.NT 56-R724.PR 56-R724.PR 56-R724.PR 56-R724.PR

56-844.NT

200 SX 200 SX 200 SX 200 XC

56-844.NT

56-844.NT

– –

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

56-802.SI 56-802.SI 56-802.SI 56-802.SI 56-802.SI 56-802.SI 56-802.SI 56-802.SI 56-802.SI 56-802.SI 56-802.SI 56-802.SI 56-802.SI 56-802.SI

56-R725 56-R725

250 EXC Single Ring

250 GS 250 MX

56-R724.PR 56-R724.PR

250 MXC

56-R725 56-R725

250 R Freeride

2014

66.4mm 56-W824.A.NT

250 SX 250 SX 250 SX

1990 - 94 67.5mm 56-W601.A.NT 1996 - 99 67.5mm 56-W694.A.NT 2000 - 02 66.4mm 56-W774.A.NT 2003 - 18 66.4mm 56-W824.A.NT 2000 - 02 66.4mm 56-W774.A.NT 2003 - 07 66.4mm 56-W824.A.NT 2008 - 16 66.4mm 56-W824.A.NT 2006 - 18 66.4mm 56-W824.A.NT 2006 - 12 66.4mm 56-W824.A.NT 2004 - 16 72mm 56-W854.A.NT 2004 - 05 72mm 56-W854.A.NT 2008 - 16 75mm 56-W854.A.NT 2008 - 19 75mm 56-W854.A.NT

56-R724.PR 56-R724.PR

56-R725 56-R725 56-R725 56-R725 56-R725 56-R725 56-R725

250 SX Single Ring

250 SXS 250 SXS 250 SXS

56-802.SI

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

56-802.SI

300 EXC 300 MXC

– – – –

56-802.SI 56-802.SI 56-802.SI 56-802.SI

300 XC

300 XC-W

*Please visit our website for current prices

E-mail: sales@oro2u.com

www.oro2u.com

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