KB Performance Piston KB Performance, 1340cc Evo B.T. piston kit. STD

Description

KB Performance PistonKB Performance, 1340cc Evo B.T. piston kit. STD  944659

fits  84-99 1340cc Evo Big Twin (NU)

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.

 

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