Overview S&S 124 in. Twin Cam A Style Motor with Single Bore EFI
Fuel injected motors without module
- All motors have a 4 1/8 bore, a 4 5/8 stroke and forged pistons with 10.8:1 compression ratio
- New S&S single-bore fuel-injection throttle body which allows the Harley-Davidson Screamin' Eagle EFI Race Tuner Kit, S&S VFI Delphi-Style module, or similar aftermarket fuel-injection modules to be used
- Throttle body has the same bore diameter as S&S Super G carburetor, so it provides ample airflow for high-performance 124" motors
- All feature super strong S&S Twin Cam-style crankcases with extra section thickness in key stress areas
- Timken-style sprocket shaft bearing for superior strength and load capacity
- S&S's legendary flywheel, connecting rods, .640 lift gear drive cams, S&S cylinders and pistons, S&S cylinder heads, rocker arms, rocker covers and electric compression releases; also feature the new S&S Twin Cam-style oil pump and tappets
- Motors that come with the Delphi-style S&S Variable Fuel Injection (VFI) Module include the manifold, throttle body, fuel rail and injectors; Does not include idle air control motor, throttle position sensor, MAP sensor, temperature sensor, air cleaner, or tuned induction system
- Made in the U.S.A.
- Available with or without module with natural, black powder-coat, or polished finish
NOTE: S&S air cleaner kit or tuned induction kit assembly must be purchased separately to complete the package.
NOTE Not for Dyna 91-07 or FLH 99-07 models.
NOTE: Required components: Tuned induction assembly bracket part number 20-2022, EFI tuned induction assembly choice of part numbers 18-3365, 18-3366 and 18-336 or tear drop air cleaner kit part number 18-3362
NOTE: This item usually ships 3 or 4 days after the order is placed
Specs S&S 124 in. Twin Cam A Style Motor with Single Bore EFI
- Bore Size: 4 1/8 in.
- Stroke: 4 5/8 in.
- Type: Twin Cam Style
- U.S. Size: 124 in.
- Units: Each
- Finish: Polished
Fitment S&S 124 in. Twin Cam A Style Motor with Single Bore EFI
- * This item does not have any factory standard/original
equipment fitments. Please use the information provided
in the specs and overview tabs to determine if this part
will work for your application.
Images S&S 124 in. Twin Cam A Style Motor with Single Bore EFI
(click on photo(s) for larger images)
Polished S&S 124 in. Twin Cam A Style Motor with Single Bore EFI

Sizing S&S 124 in. Twin Cam A Style Motor with Single Bore EFIsizing
Sendtofriend S&S 124 in. Twin Cam A Style Motor with Single Bore EFI