<ul> <li>MOS2 (Teflon/Molybdenum) Coated Skirts - A rolled on application process provides a bond that is 10 times stronger than other spray on coatings.</li> <li>Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures</li> <li>Machined Smooth Heads - Reflects combustion heat and reduces carbon buildup, protecting the top of the piston.</li> <li>Some tests have shown this feature can increase horsepower and fuel economy by up to 6%</li> <li>Anodized Domes - I</li> </ul>

Bore: 81.46mm<br>Compression: 11:1 High Compression<br>Sizing: 1.50mm Oversize<br><br>MOS2 (made with 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.<br> Machined Smooth Heads - Reflects combustion heat and reduces carbon buildup, protecting the top of the piston. Some tests have shown this feature can increase horsepower and fuel economy by up to 6%.<br> Anodized Domes - Increases heat resistance and durability; pistons with anodized domes are 75% stronger than non-anodized pistons.<br> Hypereutectic Casting Process - Provides higher silicon content for reduced expansion rates and additional wear resistance; it also has an ability to withstand higher cylinder temperatures.<br><br>This item fits the following vehicle applications:<br>compatible with Honda TRX400EX Sportrax 1999-2008<br>compatible with Honda TRX400X 2012-2014<br>compatible with Honda TRX400X 2009<br>compatible with Honda XR400R 1996-2004<br>