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Your cart is empty.Namura uses the best materials matching the ring design to its application. Often overlooked and unglamorous, they are an essential part of an engine's efficiency and durability. The materials used in the manufacturing of piston rings are one of the most critical factors in their performance. Meets or exceeds OEM specification, only use with Namura Pistons. Fits Namura Pistons: NA-10003 for: Honda XR400R 1996-2004, TRX400EX 1999-08, TRX400X 2009-14.
Patrick W. Hennessy
Reviewed in the United States on December 31, 2018
My own error! If I completely read the description and the specifications I would have known these rings will only fit a namura piston, I purchased the piston and should be installing it this week once it arrives. Good news for next time, I've got brand new rings on the shelf.
Kalyn
Reviewed in the United States on March 21, 2017
Does not fit a stock 400ex piston.
Madison
Reviewed in the United States on February 22, 2017
Oil rings doesn't fit
Customer
Reviewed in the United States on February 21, 2017
These rings didnt fit my piston, the top two rings fit, but the oil control ring was way too thick, waste of $20, go buy the real set of rings.
VenomCR
Reviewed in the United States on January 2, 2017
Pretty good quality and price.
Customer
Reviewed in the United States on January 23, 2016
Bought this for my 2007 Honda 400 and they did NOT fit!
Ring master
Reviewed in the United States on April 8, 2016
The oil rings don't fit stock piston only 1st and 2nd ring fit on stock piston
Butch Ritter
Reviewed in the United States on March 17, 2015
Perfect fit.
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