Kill Devil Diesel 6.4 Powerstroke pistons are designed to be the toughest replacement available. The factory 6.4 pistons routinely suffer from a design failure and a material failure when pushed beyond factory limits. We start off with the updated and improved industrial strength International Maxxforce 7 piston, a far stronger design, superior to the factory Ford pistons. We then machine our proprietary soft radius bowl design and valve reliefs into the piston - sharp edges are more likely to melt or crack, so we keep everything smooth -before sending them off for a thermal management coating on the crown that disperses heat more evenly across the surface to avoid hot spots and protects the piston crown from the intense injection pressure of modern diesel engines.
-Proprietary soft radius bowl and valve relief design, eliminates sharp edges
-Tech Line thermal management coating, far superior to dated ceramic coatings
-Steel top ring groove, perfect for street strip trucks over the long haul
-Grafal moly based friction coating on skirts
-New DLC coated pins included
-Plasma coated steel top ring, Ductile Iron second ring, 2 piece oil ring
Ceramic coating is old school technology that often flakes off due to the different thermal expansion rates of aluminum and ceramic, it's time to join the 21st century with our Tech-Line thermal management coating. The coating dissipates heat across the top of the piston more evenly and is also more resistant to the insane injection pressures found in modern diesels and won't flake off like ceramic coatings are known for. The pistons come with a steel top ring groove for superior wear resistance over the long haul; plasma coated steel top ring and ductile iron second ring, Grafal coated skirts. These pistons also help drop the compression ration slightly to a more manageable number to better handle higher boost/back pressure, and extra fueling that contribute to higher cylinder pressures. KDD pistons are used by some of the hottest 6.4's around, if you're looking for reliable towing power, competition drag truck or have a competitive pulling truck, you will want to add a set of these pistons to your build!