Description

* These forged 3-7/8in. bore stroker pistons for 1999-2006 Twin Cam are required for the S&S 106in. stock bore stroker kit with 4-1/2in. stroke flywheels.

* They are compatible with stock or S&S Super Stock cylinder heads.

* Stock 88in. cylinders may be bored to fit these pistons

Tech Tips:-

* Follow Ring End Gap & Piston to Cylinder Clearances as per the supplied Manufacturers Instructions.

* Pull the engine down first & measure the existing bore to determine if