S&S, 4-1/8" diameter piston ring set. Std.

S&S chr/moly replacement piston ring set. Compatible with all S&S Super Sidewinder Plus (incl. TC) with a 4-1/8" cylinder bore.
Standard cylinder diameter: 4.125" (104.78mm).
Note on compression ring gap: It is very important to determine the correct gap of newly installed piston rings. A gap that is too narrow can cause premature wear of the piston rings/cylinder walls or even seizure, breaking the rings and/or damaging the pistons and/or cylinder walls, etc. A piston ring gap wider than necessary will cause unnecessary loss of compression and reduced engine efficiency.
The recommended ring gap is .004" per inch of cylinder bore for street engines. For an engine with a 3-5/8" (3.625") bore, the piston ring gap would be 3.625" x .004" = .0145".
(.0145" x 25.4 = 0.3683mm or, rounded, 0.37mm).
Information provided by S&S Cycle, Inc.


Specifications


Brand
S&S


Application
All S&S SSW+ engines (Evo & Twin Cam style)


Material
Chromoly


Packaging weight
0.121 kg


HS Code
84099100


Original name
S&S, 4-1/8" bore piston rings set. Std.