Namura Overbore Piston Kit for Yamaha YFM350 / YFM400 Models - 83.95mm - NA-40005-4
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Namura Technologies Piston Kit
- Namura gives you a higher performance piston without the higher price
- MOS2 Coated Skirts increase heat transfer and reduce friction to eliminate cold seizures.
- Higher silicon content reduces expansion rates and increasesÊwear resistance.
- Machined Smooth Heads Reflect combustion heat and reduces carbon buildup.
- Namura piston kits come with the piston, a set of OEM quality rings, a wrist pin, and circlips.
Why 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 bore sizes to meet your ride's needs. MOS2 (Teflon/Molybdenum) Coated Skirts increased heat transfer, reduced friction, and helping to eliminate cold seizures. Machined Smooth Heads Reflect combustion heat and reduces carbon buildup, protecting the top of the piston. Anodized Domes Increase heat resistance and durability; anodized domes are 75% stronger than non-anodized pistons. Hyper-eutectic Casting Process Provides higher silicon content for reduced expansion rates and additional wear resistance. Namura gives you a higher performance piston without the higher price. Namura piston kits come with the piston individually wrapped, a set of OEM quality rings packed in their own box, a wrist pin, and circlips.
Product Line Namura Piston Kit Part Number NA-40005-4 Fitment Type Model-Size-Specific Fitment Use Type Aftermarket Replaceent Unit Sale Qty Style Oversized Piston Kit Position Material Finish Piston/Cylinder Size 83.95mm Piston Size Added 1.00mm Cylinder Stroke Volume Final Engine Displacement California Emissions FALSE Product Disclaimer Fitment Note Fitment Note Fitment Note Fitment Note Fitment Note 1987 Yamaha Moto-4
1987 Yamaha YFM350 Big Bear 2x4
1987 Yamaha YFM350 Warrior
1988 Yamaha Moto-4
1988 Yamaha YFM350 Big Bear 2x4
1988 Yamaha YFM350 Warrior
1989 Yamaha Moto-4
1989 Yamaha YFM350 Big Bear 2x4
1989 Yamaha YFM350 Warrior
1990 Yamaha Moto-4
1990 Yamaha YFM350 Big Bear 2x4
1990 Yamaha YFM350 Warrior
1991 Yamaha Moto-4
1991 Yamaha YFM350 Big Bear 2x4
1991 Yamaha YFM350 Warrior
1992 Yamaha Moto-4
1992 Yamaha YFM350 Big Bear 2x4
1992 Yamaha YFM350 Warrior
1993 Yamaha Moto-4
1993 Yamaha YFM350 Big Bear 2x4
1993 Yamaha YFM350 Warrior
1994 Yamaha Moto-4
1994 Yamaha YFM350 Big Bear 2x4
1994 Yamaha YFM350 Warrior
1995 Yamaha Moto-4
1995 Yamaha YFM350 Big Bear 2x4
1995 Yamaha YFM350 Warrior
1995 Yamaha YFM350 Wolverine
1996 Yamaha YFM350 Big Bear 2x4
1996 Yamaha YFM350 Warrior
1996 Yamaha YFM350 Wolverine
1997 Yamaha YFM350 Big Bear 2x4
1997 Yamaha YFM350 Big Bear 4x4
1997 Yamaha YFM350 Warrior
1997 Yamaha YFM350 Wolverine
1998 Yamaha YFM350 Big Bear 2x4
1998 Yamaha YFM350 Big Bear 4x4
1998 Yamaha YFM350 Warrior
1998 Yamaha YFM350 Wolverine
1999 Yamaha YFM350 Big Bear 4x4
1999 Yamaha YFM350 Warrior
1999 Yamaha YFM350 Wolverine
2000 Yamaha YFM350 Warrior
2000 Yamaha YFM350 Wolverine
2001 Yamaha YFM350 Warrior
2001 Yamaha YFM350 Wolverine
2002 Yamaha YFM350 Warrior
2002 Yamaha YFM350 Wolverine
2003 Yamaha YFM350 Warrior
2003 Yamaha YFM350 Wolverine
2004 Yamaha YFM350 BRUIN
2004 Yamaha YFM350 Raptor
2004 Yamaha YFM350 Warrior
2004 Yamaha YFM350 Wolverine
2005 Yamaha YFM350 BRUIN
2005 Yamaha YFM350 Raptor
2005 Yamaha YFM350 Wolverine
2006 Yamaha YFM350 BRUIN
2006 Yamaha YFM350 Raptor
2006 Yamaha YFM350 Wolverine
2007 Yamaha YFM350 Grizzly
2007 Yamaha YFM350 Raptor
2007 Yamaha YFM350 Wolverine
2008 Yamaha YFM350 Grizzly
2008 Yamaha YFM350 Raptor
2008 Yamaha YFM350 Wolverine
2009 Yamaha YFM350 Grizzly
2009 Yamaha YFM350 Raptor
2009 Yamaha YFM350 Wolverine
2010 Yamaha YFM350 Grizzly
2010 Yamaha YFM350 Raptor
2011 Yamaha YFM350 Grizzly
2011 Yamaha YFM350 Raptor
2012 Yamaha YFM350 Grizzly
2012 Yamaha YFM350 Raptor
2013 Yamaha YFM350 Grizzly
2013 Yamaha YFM350 Raptor
2014 Yamaha YFM350 Grizzly -
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Items will be shipped within 1 business day from the date of purchase to the address provided. Orders submitted before 3PM EST will often ship the same day. We will use an appropriate shipping service and/or carrier based on the shipping service selected at checkout and can not be changed/upgraded/modified in any way once the order is submitted.
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Sales Terms
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Return PolicyAt SVS Powersports we understand that a product does not always look, fit or function as expected. If such a situation arrises, we do accept returns of all Unopened, Unused items with original packaging within 30 days of purchase/delivery. If your item is damaged, defective or completely different from the item ordered, please DO NOT submit a return request, please contact our knowledgable support staff with a clear description of the issue and someone will get back to you in a prompt time frame.
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Additional Support
At SVS Powersports we are proud to offer unparalleled level of customer support and if any question or issue should arise, do not hesitate to contact us at any time. We have a very experienced and knowledgable support staff that can assist you with virtually any inquiry. Support staff is available 6 Days a week (Monday Thru Saturday) 10AM to 6PM EST by calling 1-800-787-5817 OR via email at inquiries@svspowersports.com with most inquiries responded to within less than an hour during our staff support hours. If you contact us outside these hours, we may still get back you right away, but a response may be delayed until the next business day.
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