Part Description
KB Performance, 1200 XL piston kit. +.040"
Standard replacement piston set, for stock or high lift camshafts. With a lowered top ring and deeper valve pockets to accomodate the higher lift cams. Stock 9.0:1 compression ratio. Piston weight 341gr. Piston pin weight 97gr. Head type: Flat top / Dome +1.5cc. Compression height 1.210". Bore 3.498" / Stroke 3.812". Rod length 6.938" / Cyl. length 4.650". 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. Note: Top compression ring will need additional clearance. See instructions.
