KB Performance, 1340Cc Shovel Pop-Up Piston Kit. +.040″ For Harley ● Inmovilizador del motor que se activa automáticamente con la alarma ● Protección perimetral para puertas, capó y maletero ▶ Activa la protección total de tu auto
High compression pop-up piston set.
9.5:1 CR.
Piston weight 388gr.
Piston pin weight 97gr.
Head type: Dome
/ Dome -47cc. Compression height 1.285″
/ Bore 3.4980″. Stroke 4.250″. Rod length 7.440″
/ Cyl. length 5.330″.
Comes with T5 heat treated 390 Hypereutectic cast pistons with 16% silicona flexible 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.
Note: Around 30% of stock 1340cc Shovel cylinders may present a problem in combination with the location of some of the oil return holes since KB pistons have a wider piston ring pack for better piston stability in the cylinder.
In these cases the oil return hole must be re-located (lowered) to avoid excessive oil consumption.
Fits: > 79-84 1340cc Shovel (NU)
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