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 S&S SSW+ engines (Evo & Twin Cam style)
KB Performance, 1200cc B.T. piston kit. +.010"
Compatible with stock cylinders and heads, gives stock compression ratio. 8.5:1 CR. Piston weight 370gr. Piston pin weight 97gr. Head type: Dome 0.656" / Dome -57cc. Compression height 1.450". Bore 3.4375" / Stroke 3.969" (3-31/32"). Rod length 7.440" / Cyl. length 5.330". Comes with T6 heat treated 390 Hypereutectic cast pistons with 16% silicone levels which enables running a very tight clearance for longevity and hardly any piston noise. Note: Top compression ring will need additional clearance. See instructions.
Fits: > 41-78 74"/1200cc Knuckle, Pan, Shovel (NU)
HASTINGS, 3-3/16" BORE CHR/MOLY PISTON RING SET. +.050"
Std cyl. bore: 3.187" (80.96mm). 1st ring: 1.6mm. 2nd ring: 1.6mm. Oil ring: 4.75mm. 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.)
Fits: > XL 72-85
HASTINGS, 3-7/16" BORE CHR/MOLY PISTON RING SET. STD
Std cyl. bore: 3.4375" (87.312mm). 1st ring: 1.6mm. 2nd ring: 1.6mm. oil ring: 4.75mm. 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.)
Fits: > 41-E78 1200cc/74" B.T. (excl. Flatheads) (NU)
Pop-up high compression. 9.5:1 CR. Piston weight 392gr. Piston pin weight 97gr. Head type: Dome. Dome -9cc. Compression height 1.375". Bore 3.4980". Stroke 4.250" (4 1/4"). Rod length 7.440". Cyl. length 5.550". Comes with T6 heat treated 390 Hypereutectic cast pistons with 16% silicone levels which enables running a very tight clearance for longevity and hardly any piston noise. Note: Top compression ring will need additional clearance. See instructions.
Fits: > 84-99 1340 Evo B.T. (NU)
Pop-up high compression. 10.5:1 CR. Piston weight 360gr. Piston pin weight 97gr. Head type: Dome 0.200". Dome -18cc. Compression height 1.375". Bore 3.4980". Stroke 4.250" (4-1/4"). Rod length 7.440". Cyl. length 5.550". Comes with T6 heat treated 390 Hypereutectic cast pistons with 16% silicone levels which enables running a very tight clearance for longevity and hardly any piston noise. Note: Top compression ring will need additional clearance. See instructions.
Fits: > 84-99 1340 Evo B.T. (NU)
Harley-Davidson NOS Standard size Ring kit, for Shovelhead models, quantity 2. NEW in box, box is open. Fits 1978-84 FL and FX models. Also fits 1980-83 FLT and 1982-83 FXR models. This is a Harley-Davidson Eagle Iron part. H-D part # 22334-78TB
Pr stk pris
Pop-up high compression. 9.5:1 CR. Piston weight 392gr. Piston pin weight 97gr. Head type: Dome. Dome -9cc. Compression height 1.375". Bore 3.4980". Stroke 4.250" (4 1/4"). Rod length 7.440". Cyl. length 5.550". Comes with T6 heat treated 390 Hypereutectic cast pistons with 16% silicone levels which enables running a very tight clearance for longevity and hardly any piston noise. Note: Top compression ring will need additional clearance. See instructions.
Fits: > 84-99 1340 Evo B.T. (NU)
Hastings, 3-7/16" bore chr/moly piston ring set. +.060"
Std cyl. bore: 3.4375" (87.312mm). 1st ring: 1.6mm. 2nd ring: 1.6mm. oil ring: 4.75mm. 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.)
Fits: > 41-E78 1200cc/74" B.T. (excl. Flatheads) (NU)
Replacement 45" Flathead piston kit. +.020"
Cast aluminum OEM style pistons for a stock rebuild. Wil fit all 29-73 45" (750cc) Flathead models. Pistons include wrist pins, retainers 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.
Fits: > 29-73 45" (750cc) Side Valves (NU)
Brand S&S CYCLE
Vendor Part Number 920-0115
Bore - Oversize +0,010"
Bore Oversize - Imperial +0.010"
Bore Size 4,010"
Compression Ratio 10,6:1
Compression Ratio Imperial 10.6:1
Displacement 110"
Piston Head Shape Raised Dome
Product Name Piston Kit
Type High Compression
Units Kit
Wrinkle black aluminum finish. Direct replacement for OEM components for a stock rebuild. Fits all stock 84-99 Evolution Big Twin models. For stock 4-1/4" stock stroke flywheels and stock 3-1/2" bore. Comes complete with stock length 5.550" long cylinders, forged pistons, piston rings, wrist pins and head & base gaskets. Stock 8.5:1 compression ratio. Engine life can be expected to be excellent, like stock.
Fits: > 84-99 Evo B.T. (NU)