Hastings Hastings, 3-1/2″ bore piston ring set. Chr/Moly. STD

Description

HastingsHastings, 3-1/2″ bore piston ring set. Chr/Moly. STD  908645

fits  84-99 Evo Big Twin; 88-03 XL Sportster1200 (NU)

Std cyl. bore: 3.4980″ (88.85 mm). 1st. ring: 1.6mm. 2nd ring: 1.6mm. oil ring: 4.0mm. Tech tip: Piston grooves vs piston rings. It’s not difficult to determine if a Hastings piston ring set will fit a certain piston. You should measure the height of the piston groove in the piston itself. The 2 top grooves will be for compression rings, the lower groove will be for the oil ring. In most cases Hastings oil rings are of the low tension 3-piece flex vent type. Ring heights are listed for reference. Tech tip: Piston oversizes. For each oversize cylinder diameter will increase with .010″ (0.254mm). The standard bore of the cylinder is listed for reference. (Information provided by Hastings Manufacturing Company, Inc.).

 

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