Namura NA-40015K 70.95mm Top End Repair Kit

$ 70.59

Score By Feature

Based on 6 ratings

Giftable

8.65

Packaging

8.48

Customer service

8.76

Value for money

8.27

OveReview Final Score

How Our Score Is Calculated

Product Description

It fits Yamaha YFB 250 Timberwolf 2WD 1992-99, YFB 250 Timberwolf 4WD 1994-00, YFM 250 Bear Tracker 1999-04, YFM 250 Bruin 2005-06, YFM 250 Big Bear 2007-09.

All you have to do to get them going again is replace the pistons, catch the top end gasket, and replace the bearings as

This product includes MOS2 (Teflon/Molybdenum) coated skirts, which provide a strong bond that is 10 times stronger than other spray-on coatings to increase heat transfer and reduce friction. They help eliminate cold seizures.

Resulting in shorter cylinder rotation time and more wear resistance, the Hypereutectic Casting Process is able to withstand higher cylinder temperatures by using higher silicon content

A piston with anodized domes is 75percent stronger than a piston without anodizing anodized domes will increase heat resistance and wear resistance

Questions & Answers

What type of sleeve does this come with? In what does the big box contain?

The sleeve is not included in the price. There is a piston, ring set, wrist pin, circlelips, and a kit for the top end gasket in this box.

The piston and rings shown here are stock sizes, right?

As far as I could tell, yes. It did not pose any problems to me.

Selected User Reviews For Namura NA-40015K 70.95mm Top End Repair Kit

The quality of the product is excellent

5/5

Buying this was a great decision. Pistons of this quality are very hard to find at this price. A company such as Namura obviously takes pride in their Having already replaced a cylinder, this was an easy installation, and it was perfectly sized for my old one. When I pulled my old piston and saw all of the carbon burns on the inside of the housing, I thought I was going to have to replace my cylinder head. Fortunately, I was able to clean everything up and make it look like new again. As a result of installing this piston, I was back up to specification. The piston seems to be in great condition. I'll definitely be making more purchases from them in the future.