Replacement Wiseco piston ring kit are for a 3-1/2 inch bore and .040 oversize. Rings are packaged per piston.
Kit includes 1 top ring 1 2nd ring and a 3 piece oil control ring.
Tech Notes: Replacement rings for #11-9889 piston set.
Instructions: http://www.vtwinmfg.com/Instructions/MS/Wiseco Ring Ins Guide.pdf
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