S&S CYCLE 4" Stroke Flywheel Assembly W/O Sprocket Shaft Bearing Race For 2000-'06 Internally Balanced HD® Big Twins - 320-0397
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This 4" (stock) stroke 8-1/2" diameter flywheel assembly replaces the original flywheels in 2000-'06 HD® internally balanced big twin engines. Sprocket shaft does not have a stock style bearing race pressed on. This flywheel assembly is for crankcases with Timken® sprocket shaft bearing. Pinion shaft has sprocket to drive balancer chain. Flywheel assembly is three piece design. Pinion and sprocket shafts are forged as part of the flywheel. The only joints in the assembly are where the 1.671" diameter connecting rod crankpin is pressed into the flywheels. Flywheels are CNC machined from heat-treated, closed die, steel forgings, which are 114% stronger than late style stock steel flywheels. Fully assembled with premium quaility S&S® heavy duty 7.667" connecting rods, with full width wrist pin ends, and dynamically balanced. Assembly is trued to less than .0005" runout on pinion and sprocket shaft bearing surfaces, making them capable of higher rpm and fully compatible with gear drive cams.
- S&S 3-piece flywheels with integral main shafts are the strongest yet, made from 4140 steel and feature a larger 1.671" crankpin
- Flywheel assemblies are designed for use with Timken bearing conversion
- Fits directly in stock crankcases with no modifications
- Made in the U.S.A.
NOTE: All S&S® Flywheels for 1999-'06 engines have 7.667” length connecting rods. Flywheel assemblies supplied with sprocket shaft bearing race installed are compatible with stock roller style sprocket shaft bearings.
Fitment Guide
| 2002 | Harley-Davidson | Softail Fat Boy EFI FLSTFI | - | - |
| 2001-2002 | Harley-Davidson | Softail Heritage Springer EFI FLSTSI | - | - |
| 2001-2002 | Harley-Davidson | Softail Heritage Classic EFI FLSTCI | - | - |
| 2001-2002 | Harley-Davidson | Softail Deuce EFI FXSTDI | - | - |
| 2001-2002 | Harley-Davidson | Softail Springer EFI FXSTSI | - | - |
| 2001-2002 | Harley-Davidson | Softail Standard EFI FXSTI | - | - |
| 2001-2002 | Harley-Davidson | Softail Night Train EFI FXSTBI | - | - |
| 2000-2002 | Harley-Davidson | Softail Deuce FXSTD | - | - |
| 2000-2002 | Harley-Davidson | Softail Springer FXSTS | - | - |
| 2000-2002 | Harley-Davidson | Softail Night Train FXSTB | - | - |
| 2000-2002 | Harley-Davidson | Softail Standard FXST | - | - |
| 2000-2002 | Harley-Davidson | Softail Heritage Classic FLSTC | - | - |
| 2000-2002 | Harley-Davidson | Softail Fat Boy FLSTF | - | - |
| 2000-2002 | Harley-Davidson | Softail Heritage Springer FLSTS | - | - |
Specs
| PRODUCT NAME | FLYWHEEL ASSEMBLY |
| MATERIAL | STEEL |
| STROKE LENGTH | 4" |
| ENGINE TYPE | "B" MOTOR |
| FEATURES | WITHOUT SPROCKET BEARING RACE |
| UNITS | EACH |
| RIDING STYLE | STREET |
Delivery Info
Please Note - Warehouse Locations For This Part -
S&S CYCLE 4" Stroke Flywheel Assembly W/O Sprocket Shaft Bearing Race For 2000-'06 Internally Balanced HD® Big Twins - 320-0397
Gold Coast Warehouse- If your parts are in stock at our Gold Coast warehouse at the time of order, they will be shipped within 24hrs.
Supplier Warehouse - 2-3 Week Delivery- If your parts are located at our Supplier Warehouse, Delivery ETA is approx 2-3 weeks, as the parts are likely coming from our USA supplier warehouse. We will notify you once we receive it in Gold Coast warehouse and its on its way to you.