Namura
Piston Kits
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.
POLARIS Models
Years
Size
Piston Kit
Oem Ref
Piston Rings
Small End Bearing
300 Hawkeye 2x4 300 Sportsman 4x4 300 Xplorer / Xpress
2006 - 11 77.7mm 2008 - 10 77.7mm 1996 - 99 74.5mm
56-W9758.000.NT 56-W9758.000.NT
– –
56-W164.NT
3085099
56-R746 56-R765 56-R766 56-R766 56-R766 56-R747 56-R748
56-809.SI
325 Trailboss / Magnum / Xpedition
2000 - 02 78mm 56-W263+000 2004 - 05 78.45mm 56-W264+000 2003 - 13 78.45mm 56-W264+000 2003 - 06 78.45mm 56-W264+000
– – – –
330 ATP 4x4
330 Trail Blazer / Boss 330 Magnum 2x4 / 4x4
350L Trail Boss 2x4 / 4x4 / 6x6 400L 2x4 / 4x4 Sport / 6x6
1990 - 94 80mm 1994 - 03 83mm
56-W165.NT 56-W166.NT
3084161 3084734
56-817.SI 56-817.SI
400 Hawkeye HO 2x4
2011 - 14 87.9mm 56-W962.000 2003 - 05 87.9mm 56-W962.000 2010 - 14 87.9mm 56-W962.000
– – –
400 Ranger 2x4 400 Ranger 4x4 400 Scrambler 400 Sportsman
1995 - 02 83mm
56-W166.NT
3084734
56-R748
56-817.SI
2001 - 05 87.9mm 56-W962.000 2008 - 14 87.9mm 56-W962.000
– –
400 Sportsman HO
400 Trail Blazer
1994 - 03 83mm 1993 - 02 83mm
56-W166.NT 56-W166.NT 56-W9992.NT
3084734 3084734
56-R748 56-R748
56-817.SI 56-817.SI
400 Xplorer / Sport
450 Farmhand
2017 2016
92.95mm
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
450 HO 2x4
99mm
56-W4981.000.NT
450 Sportsman
2006 - 07 87.9mm 56-W962.000
450 Sportsman (All)
2016 - 17 99mm 2017 - 23 92.95mm 2017 - 19 92.95mm 2004 - 05 92mm 1998 - 00 92mm 1999 - 02 92mm 1999 - 13 92mm 2017 - 22 92.95mm 1996 - 03 92mm 1996 - 13 92mm
56-W4981.000.NT
450 Sportsman HD / HO
56-W9992.NT 56-W9992.NT
500 Ace
500 ATP H.O.
56-W4677+000.NT 56-W4677+000.NT 56-W4677+000.NT 56-W4677+000.NT
3085377 3085377
56-R749 56-R749 56-R749 56-R749 56-R749 56-R749 56-R749 56-R750 56-R750
500 Big Boss 6x6
500 Magnum RMK 4x4 500 Ranger 2x4 / 4x4
3085377
500 Ranger
56-W9992.NT
500 Xplorer / Magnum
56-W4677+000.NT 56-W4677+000.NT 56-W4677+000.NT
3085377 3085377 3085377
500 Sportsman / Scrambler 500 Sportsman Forest Tractor
2014
92mm
500L Outlaw 500L Predator 550 Sportsman
2006 - 07 99.20mm 2003 - 07 99.20mm 2009 - 14 96.6mm 2015 - 19 99mm 2012 - 23 99mm 2014 - 23 99mm 2014 - 23 99mm 2017 - 22 99mm 2005 - 09 80mm 2002 - 08 80mm 2007 - 08 80mm
56-W4807.NT 56-W4807.NT
3087970
56-W095.000.NT 56-W4981.000.NT 56-W4981.000.NT 56-W4981.000.NT 56-W4981.000.NT 56-W4981.000.NT 56-W9770.A.NT** 56-W9770.A.NT** 56-W9770.A.NT** 56-W9771.A.NT** 56-W9771.A.NT** 56-W9771.A.NT** 56-W9771.A.NT** 56-W9771.A.NT** 56-W9700.A.NT** 56-W9771.A.NT** 56-W9700.A.NT** 56-W9700.A.NT** 56-W9700.A.NT** 56-W9771.A.NT** 56-W9771.A.NT**
570 ACE EFI (UTV) 570 RZR EFI (UTV) 570 Ranger All (UTV) 570 Sportsman (All) 570 Sportsman 6x6 700 Ranger 4x4 / 6x6
700 Sportsman (EFI & Carb)
700 Sportsman X2 EFI
800 Ranger All 800 Ranger EFI
2010
80mm
2011 - 14 80mm 2013 - 14 80mm 2011 - 14 80mm 2011 - 16 80mm 2010 - 14 80mm 2008 - 10 80mm 2011 - 14 80mm
800 Ranger EFI Midsize
800 Ranger Crew 800 Ranger 6x6
800 RZR 4
800 RZR EFI
800 RZR EFI / EPS
800 RZR S 800 RZR S
2009
80mm
2011 - 14 80mm 2005 - 14 80mm 2012 - 14 80mm
800 Sportsman EFI
800 Sportsman EFI Forest **2 Pistons required per vehicle
*Please visit our website for current prices
E-mail: sales@oro2u.com
www.oro2u.com
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