Keith Black Hypereutec. Piston Kit Evo 84-99 +.010

8.5:1 CR. Piston weight 350gr. Piston pin weight 97gr.

Head type: Flat top.

Dome +1.5cc.

Compression height 1.375".

Bore 3.4980".

Stroke 4.250" (4-1/4").

Rod length 7.440".

Cyl. length 5.550".

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.