ORO2U ATV Catalogue - Section E - Engine and Performance

Namura

Piston Kits

YAMAHA Models

Years

Size

Piston Kit

Oem Ref

Piston Rings

Small End Bearing

YFM 80 Badger YFM 80 Raptor YFM 80 Grizzly YFA 125 Breeze YFM 125 Grizzly

1985 - 01 47mm 2002 - 08 47mm 2005 - 08 47mm 1989 - 04 49mm 2004 - 13 49mm 1988 - 06 66mm 1988 - 06 66mm 1992 - 99 71mm 1994 - 00 71mm 1999 - 04 71mm 2005 - 06 71mm 2007 - 09 71mm 1987 - 06 64mm 1987 - 06 64mm 2004 - 06 83mm 2007 - 14 83mm 1987 - 95 83mm 1987 - 98 83mm 1997 - 99 83mm 1995 - 09 83mm 2004 - 13 83mm 1987 - 04 83mm 2000 - 12 83mm 1993 - 99 83mm 2000 - 06 84.5mm 2007 - 08 84.5mm 2007 - 14 84.5mm 2003 - 06 84.5mm 2018 - 23 84.5mm 2006 - 10 84.5mm 2006 - 10 84.5mm 2004 - 13 95mm

56-W4841.000.NT 56-W4841.000.NT 56-W4841.000.NT 56-W047.000.NT 56-W047.000.NT 56-W572.000.NT 56-W573+000.NT 56-W4675+000.NT 56-W4675+000.NT 56-W4675+000.NT 56-W4675+000.NT 56-W4675+000.NT

– – – – –

56-R754+0.00 56-R754+0.00

56-832.NT 56-832.NT

YFS 200 Blaster Comp. 6.6:1

2XJ-11631-01-97

Hi-Comp.

YFB 250 Timberwolf 2WD YFB 250 Timberwolf 4WD YFM 250 Bear Tracker

– – – – –

YFM 250 Bruin

YFM 250 Big Bear

56-W515.NT 56-W513.NT

56-R756.640

56-832.NT 56-832.NT

YFZ 350 Banshee Standard Comp.

2GU-11631-00-94

56-R755 56-R757 56-R757 56-R757 56-R757 56-R757 56-R757 56-R757 56-R757 56-R757 56-R757 56-R758 56-R758

Hi-Comp.

YFM 350 Bruin YFM 350 Grizzly

56-W4419+00A.NT 56-W4419+00A.NT 56-W4419+00A.NT 56-W4419+00A.NT 56-W4419+00A.NT 56-W4419+00A.NT 56-W4419+00A.NT 56-W4419+00A.NT

– – – – – – – – – – – – – – – – – – – – – – – – – – –

YFM 350ER Moto-4 YFM 350 Big Bear 2x4 YFM 350 Big Bear 4x4 YFM 350FX Wolverine YFM 350R Raptor YFM 350X Warrior YFM 400 Big Bear YFM 400F/FW Kodiak YFM 400FW Kodiak

1UY-11631-01-Y0 1UY-11631-01-Y0 1UY-11631-01-Y0 1UY-11631-01-Y0 1UY-11631-01-Y0 1UY-11631-01-Y0

56-W4676.NT 56-W4676.NT 56-W037.NT 56-W037.NT

4GB-11631-00 4GB-11631-00 5GH-11631-00 5GH-11631-00

YFM 400 Grizzly YFM 450 Grizzly YFM 450 Kodiak YFM 450 Kodiak

56-W4939.000.NT 56-W4939.000.NT 56-W4939.000.NT 56-W4939.000.NT 56-W4939.000.NT

56-R7700.8450 56-R7700.8450 56-R7700.8450 56-R7700.8450 56-R7700.8450

YXR 450 Rhino (UTV) YFM 450 Wolverine

YFZ 450 YFZ 450

56-W4865+00C.NT 5TG-11631-00

56-R759 56-R759 56-R759 56-R760

2017

95mm

56-W4865+00C.NT 56-W4865+00C.NT

YFZ 450R/X

2009 - 23 95mm 1998 - 01 95mm 2002 - 08 100mm 2001 - 05 100mm 2004 - 07 100mm 2016 - 18 103mm 2016 - 18 103mm 2016 - 18 103mm

YFM 600F Grizzly YFM 660F Grizzly YFM 660R Raptor YXR 660 Rhino

56-W4797+00A.NT 3TB-11631-00-00

56-W8507+00A.NT 3YF-11631-00-XO 56-R761 56-W8507+00A.NT 3YF-11631-00-XO 56-R761 56-W8507+00A.NT 3YF-11631-00-XO 56-R761

YFM 700G Grizzly 4WD/EPS 4WD Hunter YFM 700K Kodiak 4WD/EPS 4WD Hunter YXE 700W Wolverine EPS/R-Spec All

56-W40140.NT_000 56-W40140.NT_000 56-W40140.NT_000

Namura Hyperdryve 4-Stroke Piston Kits Namura’s HYPERDRYVE line of pistons are composed of a space-age hypereutectic aluminium alloy developed by NASA. Engineered to maintain its high tensile strength up to 700F (370C), 50% higher than a conventional cast piston, this gives HYPERDRYVE the strength to perform under operating conditions normally reserved for forged pistons.

YAMAHA Models

Years

Size

Piston Kit

Piston Rings

YFZ 450 YFZ 450

2004 - 13 95mm 56-W4865+00A.HY

56-R759 56-R759 56-R759

2017

95mm 56-W4865+00A.HY

YFZ 450R/X

2009 - 19 95mm 56-W4865+00A.HY

YFM 700R Raptor YFM 700R Raptor YFM 700F Grizzly YFM 700F Grizzly YFM 700F Grizzly YFM 700F Grizzly YFM 700 Kodiak YXM 700 Viking YXR 700 Rhino

2006 - 14 102mm

56-W4902+00A.NT 56-R7707.NT

2015 - 23

102mm

56-W9860.A.NT

56-R7707.NT

2007 - 13 102mm 2014 - 15 102mm 2016 - 18 103mm

56-W4902+00A.NT 56-R7707.NT

56-W9860.A.NT

56-R7707.NT

56-W40140.NT_000

2019 - 23 2019 - 23 2014 - 23

102mm 102mm 102mm

56-W9860.A.NT 56-W9860.A.NT 56-W9860.A.NT

56-R7707.NT 56-R7707.NT 56-R7707.NT

2008 - 13 102mm

56-W4902+00A.NT 56-R7707.NT

*Please visit our website for current prices

E-mail: sales@oro2u.com

www.oro2u.com

E17

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