KB Performance, 96" to 103" big bore piston set. +.040"

For 96" to 103" (3 3/4" to 3 7/8") big bore conversions. Used with stock heads and cylinders. By boring the stock cylinders from 3-3/4" to 3-7/8" big bore size engine capacity will increase from 96" to 103". Comes with T6 heat treated 390 Hypereutectic cast pistons with 16% silicone levels which enables running a very tight clearance for longevity and hardly any piston noise.