106-4416 3.927" bore forged piston & ring kit. +.010"

For engines that require a slight overbore during a rebuild, this S&S piston and ring kit provides 3.927-inch forged pistons at a +.010-inch oversize. These are designed as high-quality replacements for the S&S 96-inch to 106-inch big bore conversion kits. Forging ensures these pistons can handle the increased stresses of a performance engine while maintaining tight tolerances. This kit is compatible with 2006 to 2017 96-inch Dyna models, 2007 to 2017 96-inch Softails, and 2007 to 2016 96-inch Touring models equipped with the 106-inch big bore cylinders. Sold as a kit, it is the professional choice for restoring compression and power to your upgraded Twin Cam engine.