S&S Cycle 106-5519 3-1/2" Standard 80" HC Forged Pistons for 1978-'84 HD® OHV Engines mini backpack feature the contrasting Bar &

feature the contrasting Bar & Shield® logo graphic on the front of the calf and the orange Harley-Davidson® signature on the outside of the foot

Fits all Harley-Davidson Touring models including Trikes

adding a touch of signature style

Measures approximately 11"W x 16

LED replacement for front OEM turn signals

S&S Cycle 106-5519 3-1/2" Standard 80" HC Forged Pistons for 1978-'84 HD® OHV Engines mini backpack feature the contrasting Bar &S&S Cycle 106 5519 These 3 1 2" standard bore high compression pistons fit 1979 '84 74" HD big twin engines, producing 9: 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. S&S will fit these pistons to your existing