Namura Technologies NX-40001 Piston Kit - Standard Bore 53.94mm, 10.8:1 Compression engine-valve-train-cam-chain-tensioners 2009-2010 Yamaha YFM400 Big Bear

2009-2010 Yamaha YFM400 Big Bear IRS 4x4

2004-2006 Harley Davidson FLHT Electra Glide Standard

2010-2011 Yamaha YFM350 Grizzly 4x4 Auto

2016-2018 Sherco 300 SEF-R Factory

No more burnt plastic with this boots leather heat shield

Namura Technologies NX-40001 Piston Kit - Standard Bore 53.94mm, 10.8:1 Compression engine-valve-train-cam-chain-tensioners 2009-2010 Yamaha YFM400 Big BearBore: 53. 94mm Compression: 10. 8: 1 Compression Sizing: Standard Bore MOS2 (Teflon Molybdenum) Coated Skirts A rolled on application process provides a bond that is 10 times stronger than other spray on coatings. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures. Machined Smooth Heads Reflects combustion heat and reduces carbon buildup, protecting the top of the piston. Some tests have shown this