S&S Cycle Standard LC Forged Piston Kit: 78-84 Harley-Davidson Big Twin OHV Models – 3-1/2″+.010″ – 106-5512

Description

S&S Cycle Standard LC Forged Piston Kit: 78-84 Harley-Davidson Big Twin OHV Models – 3-1/2″+.010″ – 106-5512

Fitment:78-84 Harley-Davidson Big Twin Models

These 3-1/2″ standard bore pistons fit 78-84 80″ Harley-Davidsonbig twin engines, producing 8:1 compression with stock unmodified cylinder heads.. The modern alloys used in these pistons, coupled with the advanced skirt profiles, allow them to be fit tighter resulting in low engine noise and long engine life. In the past, this could only be achieved with weaker cast pistons.