KB907C030 Performance, 96" to 103" Twin Cam piston kit. +.030"

This KB Performance forged piston kit is designed for 2007 to 2017 Twin Cam models undergoing a 96-inch to 103-inch big bore conversion. Sized at .030 inches over, these pistons feature a 3.875-inch bore and are engineered to work with a 4.375-inch stroke. The dished head design provides a +6.9cc volume, resulting in a 9.5:1 compression ratio when used with stock 85cc cylinder heads. These forged pistons are built for longevity and include offset wrist pins to ensure smooth operation. Proper installation is critical, as the pistons have specific front and rear orientations that must be observed. Sold as a set, this kit provides a reliable foundation for a powerful and durable Twin Cam engine build.