KB Performance, 1340Cc Evo B.T. Pop-Up Piston Kit. +.040" For Harley Davidson

Pop-up high compression.
10.5:1 CR.
Piston weight 360gr.
Piston pin weight 97gr.
Head type: Dome 0.200".
Dome -18cc.
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.

Fits: > 84-99 1340 Evo B.T. (NU)