Forged 3 5/8" Bore Piston Kits for 1984-'99 HD® Big Twins 88", 93", & 98" Stock Style Heads Touring and Roadking (1995-2008) This is the best kit

This is the best kit for 2014 and up - by a longshot

The result is a clean overall style wheel that reveals more and more detail the closer you get

The 49mm fit the conventional front end while the 55mm work with the Inverted Front End configuration

Uniquely designed back plate with air horn style radiused entryway and dimpled cover with directional air cone on inside creates smooth path for air to reduce turbulence

Silver underbill

Forged 3 5/8" Bore Piston Kits for 1984-'99 HD® Big Twins 88", 93", & 98" Stock Style Heads Touring and Roadking (1995-2008) This is the best kitThese forged, 3 5 8" big bore flat topped pistons are used in S&S Sidewinder kits and Hot Set Up Kits for HD Evolution big twins with stock cylinder heads and 4 1 4" and 4 1 2"stroke engines with stock diameter (8 1 2") flywheels and 4 3 4" stroke engines with 8 1 4" diameter flywheels. 3 5 8" bore.