S&S Cycle 106-5520 3-1/2",+.010", 80" HC Forged Pistons for 1978-'84 HD® OHV Engines plush 2007 Harley-Davidson Touring FLHX Electra

2007 Harley-Davidson Touring FLHX Electra (Street) Glide

1983-1985 Harley-Davidson Sportster 1000 XLX

Custom Dynamics 20402307

Smooth finish

Molded Arlen Ness® logo in specially designed rubber

S&S Cycle 106-5520 3-1/2",+.010", 80" HC Forged Pistons for 1978-'84 HD® OHV Engines plush 2007 Harley-Davidson Touring FLHX ElectraS&S Cycle 106 5520 These 3 1 2" +. 010" 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