Hastings piston rings, 3-5/8" diameter, chrome/moly. +.030"

Compatible with 3-5/8" big bore pistons using .078" (2.0mm) compression rings and a 3/16" (.186") (4.75mm) oil ring.
Standard cylinder bore diameter: 3.625" (92.075mm).
1st ring: 2.0mm.
2nd ring: 2.0mm.
Oil seal: 4.75mm.
Note: When using 3-5/8" S&S pistons, in virtually all cases the Hastings rings for S&S pistons listed as 'S&S 3-5/8 Big Bore' should be used. These come with 1.6mm compression rings and 4.0mm oil rings. Please check before ordering.
Technical tip: Piston grooves vs. piston rings.
It is not difficult to determine whether a set of Hastings piston rings fits a given piston. You must measure the height of the piston groove on the piston itself. The 2 upper grooves are for the compression rings and the lower groove is for the oil ring. In most cases, Hastings oil rings are the low-tension 3-piece flexible type. Ring heights are listed for reference.
Technical tip: Piston oversizes.
For each oversize, the cylinder diameter increases by .010" (0.254mm). The standard cylinder diameter is given for reference purposes.
(Technical advice information provided by Hastings Manufacturing Company, Inc.)


Specifications


Brand
Hastings


Application
Shovel 3-5/8" big bore


Material
Chromoly


Packaging weight
0.08 kg


HS Code
84099100


Motorcycle family
BIG TWIN, FX, FXR, SOFTAIL, TOURING


Original name
Hastings, 3-5/8" bore chr/moly piston rings. +.030"