Description
S&S Cycle - 310-1103B - 128" Power Package - Chain Drive - Wrinkle Black with Highlighted Fins - 114"/117" M8
Features
- Made in the USA
- Big Bore Kit
- Big-bore bolt-on kit increases 114"/117" with 4-1/2" stroke M-Eight to 128" with no case machining required
- 4-1/4" bore cylinders with 11:1 forged pistons
- Oil Pump/Cam Plate
- S&S oil pump/cam plate with blue anodized finish
- Passage plugs are removable for servicing
- Independent scavenge sections for flywheel cavity and camchest
- Debris screen in both scavenge pickups
- Magnet in camchest to help prevent debris from entering the oil pump
- Increased oil flow capacity on both the oil feed and scavenge side
- Adjustable pressure relief valve can be adjusted with the unit installed in the engine
- Pushrods
- Quikee pushrods with chrome pushrod tubes
- Tappets
- S&S premium tappets
- Tappet Cuffs
- S&S hard-anodized, black coated tappet cuffs are billet aluminum construction
- Improve tappet stability in high-lift, high-rpm situations
- Cam
- S&S 550 cams designed for big bore applications
- Valve Springs
- S&S valve springs work with cams up to .605" lift
- High-performance conical single-wire spring design
- All necessary gaskets, bearings and hardware for bolt-on installation is included
Specs
| Bore Size Imperial | 4.250'' |
| Riding Style | Street |
| Stroke Length Imperial | 4.50'' |
| Style | Big Bore |
| Cooling System | Oil Cooled |
| Displacement | 128'' |
| Compression Ratio Imperial | 11.1:1 |
| Model | Power Package |
| Type | Engine |
| Product Name | Performance Kit |
| Color/Finish | Highlighted Fins |
| Color/Finish | Wrinkle Black |
| Units | Kit |
| Cam Drive Type | Chain |
Fitment
| 2023 | Harley-Davidson | FLFBS Fat Boy 114 |
| 2023 | Harley-Davidson | FLHXS Street Glide Special |
| 2023 | Harley-Davidson | FLTRXS Road Glide Special |
| 2023 | Harley-Davidson | FXLRS Low Rider S 117 |
| 2023 | Harley-Davidson | FXLRST Low Rider ST 117 |
