S&S chr/moly replacement piston ring set. Fits all S&S 4-1/8" bore Super Sidewinder Plus (incl. TC). Std cyl. bore: 4.25" (107.95mm). Note compression ring gap: To determine the correct ring gap on your newly installed piston rings is very important. A too narrow gap may result in premature piston ring/cylinder wall wear or even seizure; possibly breaking rings and/or damage to pistons and/or cylinder walls; and so on. A piston ring gap that is wider than necessary will result in needless compression loss and reduced engine efficiency. Recommended ring gap is .004" per inch of cylinder diameter for street engines. For a 3-5/8" (3.625") bore engine piston ring gap would be 3.625" x .004" = .0145". (.0145" x 25.4 = 0.3683mm or; when rounded of; 0.37mm). Information provided by S&S Cycle; Inc.
S&S chr/moly replacement piston ring set. Fits all S&S 4-1/8" bore Super Sidewinder Plus (incl. TC). Std cyl. bore: 4.25" (107.95mm). Note compression ring gap: To determine the correct ring gap on your newly installed piston rings is very important. A too narrow gap may result in premature piston ring/cylinder wall wear or even seizure; possibly breaking rings and/or damage to pistons and/or cylinder walls; and so on. A piston ring gap that is wider than necessary will result in needless compression loss and reduced engine efficiency. Recommended ring gap is .004" per inch of cylinder diameter for street engines. For a 3-5/8" (3.625") bore engine piston ring gap would be 3.625" x .004" = .0145". (.0145" x 25.4 = 0.3683mm or; when rounded of; 0.37mm). Information provided by S&S Cycle; Inc.
S&S chr/moly replacement piston ring set. Fits all S&S 4-1/8" bore Super Sidewinder Plus (incl. TC).. Std cyl. bore: 4.25" (107.95mm). Note compression ring gap: To determine the correct ring gap on your newly installed piston rings is very important. A too narrow gap may result in premature piston ring/cylinder wall wear or even seizure; possibly breaking rings and/or damage to pistons and/or cylinder walls; and so on. A piston ring gap that is wider than necessary will result in needless compression loss and reduced engine efficiency. Recommended ring gap is .004" per inch of cylinder diameter for street engines. For a 3-5/8" (3.625") bore engine piston ring gap would be 3.625" x .004" = .0145". (.0145" x 25.4 = 0.3683mm or; when rounded of; 0.37mm). Information provided by S&S Cycle; Inc.
Fits all KB .927" piston pins. 2 used on 1 piston. Note: See 944732 or 944733 for matching KB .927" piston pin / wrist pin.
Used with late style 1950-1973 type pistons with 1/16" gray iron parkerized compression rings and the 3-piece flex-vent style chrome oil rings. Also fits 52-56 K; KH; KHK 55" (900cc) Flathead models. Std Bore: 2.745" (69.723mm). 1st ring: 1.6mm. 2nd ring: 1.6mm. oil ring: 4.75mm. Note: OEM 1929-1949 pistons are equipped with 3/32" (2.3mm) 1st. & 2nd rings and 1/8" (3.2mm) oil ring; for these Hastings rings see 1950-1973 Flathead model years. These rings will not fit the 1929-1949 early type pistons. 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. (Tech tip information provided by Hastings Manufacturing Company; Inc.)
Used with late style 1950-1973 type pistons with 1/16" gray iron parkerized compression rings and the 3-piece flex-vent style chrome oil rings. Also fits 52-56 K; KH; KHK 55" (900cc) Flathead models. Std Bore: 2.745" (69.723mm). 1st ring: 1.6mm. 2nd ring: 1.6mm. oil ring: 4.75mm. Note: OEM 1929-1949 pistons are equipped with 3/32" (2.3mm) 1st. & 2nd rings and 1/8" (3.2mm) oil ring; for these Hastings rings see 1950-1973 Flathead model years. These rings will not fit the 1929-1949 early type pistons. 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. (Tech tip information provided by Hastings Manufacturing Company; Inc.)
Used with late style 1950-1973 type pistons with 1/16" gray iron parkerized compression rings and the 3-piece flex-vent style chrome oil rings. Also fits 52-56 K; KH; KHK 55" (900cc) Flathead models. Std Bore: 2.745" (69.723mm). 1st ring: 1.6mm. 2nd ring: 1.6mm. oil ring: 4.75mm. Note: OEM 1929-1949 pistons are equipped with 3/32" (2.3mm) 1st. & 2nd rings and 1/8" (3.2mm) oil ring; for these Hastings rings see 1950-1973 Flathead model years. These rings will not fit the 1929-1949 early type pistons. 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. (Tech tip information provided by Hastings Manufacturing Company; Inc.)
3-5/16" piston ring set with 3/32" (.09375") gray iron parkerized compression and 3/16" (.186") chromed 3-piece oil rings. Fits 37-48 74" (1200cc) ''U'' model Flatheads and 48-52 61" (1000cc) E; EL Panhead models. Std bore: 3-5/16" (84.138mm). 1st ring: 2.38mm (3/32"). 2nd ring: 2.38mm (3/32"). oil ring: 4.75mm (3/16"). 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. (Tech tip information provided by Hastings Manufacturing Company; Inc.)
3-5/16" piston ring set with 3/32" (.09375") gray iron parkerized compression and 3/16" (.186") chromed 3-piece oil rings. Fits 37-48 74" (1200cc) ''U'' model Flatheads and 48-52 61" (1000cc) E; EL Panhead models. Std bore: 3-5/16" (84.138mm). 1st ring: 2.38mm (3/32"). 2nd ring: 2.38mm (3/32"). oil ring: 4.75mm (3/16"). 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. (Tech tip information provided by Hastings Manufacturing Company; Inc.)
Smooth. Chrome plated billet aluminum. Replaces both OEM lower and upper rocker box covers. Includes gaskets & hardware. Note: See 558647 gasket strips used between top and bottom Covingtons rocker covers.
Replacement pistons for 4-1/8" bore SSW+ (Super Sidewinder Plus) type S&S engines in either Evo or Twin Cam version. Pistons include wrist pins; wrist pin clips and piston rings. Note: In any and all applications the technician must be able to judge components for their suitability in combination with the other engine components; prior to installation. It is of importance that a knowledgeable mechanic will install & make adjustments as required. The rider must follow standard break-in and riding procedures for overhauled engines.
Replacement pistons for 4-1/8" bore SSW+ (Super Sidewinder Plus) type S&S engines in either Evo or Twin Cam version. Pistons include wrist pins; wrist pin clips and piston rings. Note: In any and all applications the technician must be able to judge components for their suitability in combination with the other engine components; prior to installation. It is of importance that a knowledgeable mechanic will install & make adjustments as required. The rider must follow standard break-in and riding procedures for overhauled engines.
Replacement pistons for 4-1/8" bore SSW+ (Super Sidewinder Plus) type S&S engines in either Evo or Twin Cam version. Pistons include wrist pins; wrist pin clips and piston rings. Note: In any and all applications the technician must be able to judge components for their suitability in combination with the other engine components; prior to installation. It is of importance that a knowledgeable mechanic will install & make adjustments as required. The rider must follow standard break-in and riding procedures for overhauled engines.
Replacement pistons for 4-1/8" bore SSW+ (Super Sidewinder Plus) type S&S engines in either Evo or Twin Cam version. Pistons include wrist pins; wrist pin clips and piston rings. Note: In any and all applications the technician must be able to judge components for their suitability in combination with the other engine components; prior to installation. It is of importance that a knowledgeable mechanic will install & make adjustments as required. The rider must follow standard break-in and riding procedures for overhauled engines.
Replacement pistons for 4-1/8" bore SSW+ (Super Sidewinder Plus) type S&S engines in either Evo or Twin Cam version. Pistons include wrist pins; wrist pin clips and piston rings. Note: In any and all applications the technician must be able to judge components for their suitability in combination with the other engine components; prior to installation. It is of importance that a knowledgeable mechanic will install & make adjustments as required. The rider must follow standard break-in and riding procedures for overhauled engines.
With FHP420 cam & 8.2 compression ratio. This ''Kone'' engine comes with an alternator crankcase which is adaptable with all 70-99 Shovel & Evo B.T. transmissions and aluminum primary covers. The S&S KN-series (Knucklehead) engines come very close to the original but it is not a replica engine. A a number of improvements/changes were made. It comes with 48-99 engine mounts and will not fit OEM Knuckle frames. A later; 58-65; style flywheel assembly is used; with the splined sprocket shaft and a Timken sprocket shaft bearing for increased strength. Therefore a 54-65 style tin primary and motorsprocket must be used. Rocker arm cover ''tins'' are also improved over stock. The lower covers are made of die-cast aluminum; and instead of being held in place by the valve guide; they are held down by valve spring pressure. A special gasket on the bottom of the lower ''tin'' provides a good seal and easier access for servicing; since the valve guides do not need to be pressed out in order to remove the lower covers. Instead of the steel brazed-in hard oil return lines used on stock tins; S&S has improved oil line design for better reliability; access and assembly. Engines come completely assembled and ready to run with an S&S pre-set Superstock single fire ignition system and S&S Super E carburetor. Note: Crankcases come with 48-99 engine mounts and will not fit OEM Knucklehead frames.
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