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Hastings Moly 3-7/8"Std.Rings Kb Pistons Only

Art no.: 58-900
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These ring sets are manufactured by Hastings and are the ideal combination of design and materials that work together as a team, delivering full power and lasting oil and blow-by control. All ring faces are pre-lapped for easier seating, and in the moly sets, the compression ring features a moly insert on its barrel face de sign. The exclusive Flex-Vent oil control ring is the easiest of all designs to install because there are no right sides up or sides down. It can’t overlap, can’t gouge and can’t be installed wrong. The 80-plus shoulders on the die-formed stainless-steel stress relieved spacer- expander exerts uniform pressure on the rails assuring positive oil control, and with its open design affords 200% greater drainage capacity than conventional designs.
Fits Harley-Davidson Twin Cam 95" Big Bore 1550cc 99-06 & Twin Cam 103" 1690cc 07-15 3 7/8" Bore
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