S&S Power Pack 128 CI – M8 (GEAR DRIVE)
S&S Power Pack 128 CI for M8’s are a bolt on kit, requiring no machining to the case with performance you can count and Made in the USA!!
Shipping Note:
Due to the inability to drop-ship to the following locations CA, AK and HI "Free Shipping" is unavailable on some orders. Please use “Add to Quote” option for delivered pricing
International Ordering:
Customers located outside the USA please use “Add to Quote” option
Description
The S&S Power Pack 128 CI for M8 is a bolt on kit, requiring no machining to the case. It features highlighted fins and chrome pushrod tubes, with all parts precision machined from billet aluminum right here in the USA!!
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FEATURES:
- Big Bore Kit:
- Bolt on kit. No case machining required
- 4.250″ bore
- Forged pistons
- 11.1: compression ratio
- Oil Pump/Cam Plate
- Precision machined from billet aluminum
- Passage plugs removable for servicing
- Independent scavenge sections for flywheel cavity and cam chest
- Debris screens in both scavenge pickups
- Magnet in cam chest to help to stop debris from entering oil pump
- Increased flow capacity on both feed and scavenge side
- Pressure Relief Valve is adjustable with unit installed in engine
- Pushrods:
- Quickee pushrods
- Tappets:
- S&S premium tappets
- Tappet Cuffs:
- Billet aluminum construction
- Stronger than stock material eliminates distortion
- Improve tappet stability in high lift and high rpm situations
- Cam:
- S&S 550 Cam- Designed for Big Bore applications
- Valve Springs:
- Work well with cams up to .605 lift
- High-performance conical single wire spring
- MADE IN U.S.A
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SPECS: Oil Cooled 310-1104A
| PRODUCT NAME | PERFORMANCE KIT |
| TYPE | ENGINE |
| STYLE | 550G |
| MODEL | POWER PACKAGE |
| COLOR/FINISH | HIGHLIGHTED FINS / WRINKLE BLACK / BLACK GRANITE |
| DISPLACEMENT | 128″ |
| BORE SIZE | 4.250″ |
| COMPRESSION RATIO | 11.1:1 |
| CAM DRIVE TYPE | GEAR |
| COOLING SYSTEM | OIL COOLED |
| UNITS | KIT |
| RIDING STYLE | STREET |
FITMENTS:
| 2020 | Harley-Davidson | Softail Low Rider S FXLRS | – | – |
| 2020 | Harley-Davidson | Road Glide Limited FLTRK | – | – |
| 2020 | Harley-Davidson | CVO Tri Glide FLHTCUTGSE | – | – |
| 2020 | Harley-Davidson | Road King EFI FLHR | – | – |
| 2020 | Harley-Davidson | CVO Street Glide FLHXSE | – | – |
| 2020 | Harley-Davidson | Street Glide EFI FLHX | – | – |
| 2020 | Harley-Davidson | Electra Glide Standard EFI FLHTI | – | – |
| 2020 | Harley-Davidson | CVO Road Glide Custom FLTRXSE | – | – |
| 2020 | Harley-Davidson | Softail Standard FXST | – | – |
| 2019-2020 | Harley-Davidson | FXDR 114 | – | – |
| 2019-2020 | Harley-Davidson | Electra Glide Police FLHTPI | – | – |
| 2019 | Harley-Davidson | Electra Glide Standard EFI FLHTI | – | – |
| 2018-2020 | Harley-Davidson | Softail Heritage Classic 114 FLHCS | – | – |
| 2018-2020 | Harley-Davidson | Softail Street Bob FXBB | – | – |
| 2018-2020 | Harley-Davidson | Softail Sport Glide FLSB | – | – |
| 2018-2020 | Harley-Davidson | Softail Heritage Classic FLHC | – | – |
| 2018-2020 | Harley-Davidson | Softail Fat Bob 114 FXFBS | – | – |
| 2018-2020 | Harley-Davidson | Softail Deluxe FLDE | – | – |
| 2018-2020 | Harley-Davidson | Softail Breakout 114 FXBRS | – | – |
| 2018-2020 | Harley-Davidson | Softail Low Rider FXLR | – | – |
| 2018-2020 | Harley-Davidson | Softail Fat Boy 114 FLFBS | – | – |
| 2018-2020 | Harley-Davidson | Softail Slim FLSL | – | – |
| 2018-2019 | Harley-Davidson | Softail Fat Boy FLFB | – | – |
| 2018-2019 | Harley-Davidson | Softail Breakout FXBR | – | – |
| 2018-2019 | Harley-Davidson | Softail Fat Bob FXFB | – | – |
| 2018-2019 | Harley-Davidson | CVO Road Glide Custom FLTRXSE | – | – |
| 2017-2020 | Harley-Davidson | Electra Glide Ultra Limited FLHTK | – | – |
| 2017-2020 | Harley-Davidson | Street Glide Special FLHXS | – | – |
| 2017-2020 | Harley-Davidson | Freewheeler FLRT | – | – |
| 2017-2020 | Harley-Davidson | Road King Special FLHRXS | – | – |
| 2017-2020 | Harley-Davidson | Road Glide Special FLTRXS | – | – |
| 2017-2020 | Harley-Davidson | CVO Electra Glide Ultra Limited FLHTKSE | – | – |
| 2017-2020 | Harley-Davidson | Tri Glide Ultra Classic FLHTCUTG | – | – |
| 2017-2020 | Harley-Davidson | Road Glide Custom FLTRX | – | – |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Limited Low FLHTKL | – | – |
| 2017-2019 | Harley-Davidson | Street Glide EFI FLHX | – | – |
| 2017-2019 | Harley-Davidson | Road King EFI FLHR | – | – |
| 2017-2019 | Harley-Davidson | Road Glide Ultra FLTRU | – | – |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Classic EFI FLHTCUI | – | – |
| 2017-2019 | Harley-Davidson | CVO Street Glide FLHXSE | – | – |
| 2017-2018 | Harley-Davidson | Electra Glide Police FLHTPI | – | – |
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SPECS: Oil Cooled 310-1106A
| PRODUCT NAME | POWER PACKAGE |
| TYPE | ENGINE |
| FINISH | CHROME |
| COLOR/FINISH | HIGHLIGHTED FINS / WRINKLE BLACK |
| BORE SIZE | 4.250″ |
| COMPRESSION RATIO | 11.1:1 |
| CAM DRIVE TYPE | GEAR |
| COOLING SYSTEM | OIL COOLED |
| UNITS | KIT |
| RIDING STYLE | STREET |
FITMENTS:
| 2020 | Harley-Davidson | Softail Low Rider S FXLRS | – | – |
| 2020 | Harley-Davidson | CVO Tri Glide FLHTCUTGSE | – | – |
| 2020 | Harley-Davidson | Road Glide Limited FLTRK | – | – |
| 2020 | Harley-Davidson | Road King EFI FLHR | – | – |
| 2020 | Harley-Davidson | CVO Street Glide FLHXSE | – | – |
| 2020 | Harley-Davidson | Street Glide EFI FLHX | – | – |
| 2020 | Harley-Davidson | Electra Glide Standard EFI FLHTI | – | – |
| 2020 | Harley-Davidson | CVO Road Glide Custom FLTRXSE | – | – |
| 2020 | Harley-Davidson | Softail Standard FXST | – | – |
| 2019-2020 | Harley-Davidson | FXDR 114 | – | – |
| 2019-2020 | Harley-Davidson | Electra Glide Police FLHTPI | – | – |
| 2019 | Harley-Davidson | Electra Glide Standard EFI FLHTI | – | – |
| 2018-2020 | Harley-Davidson | Softail Fat Bob 114 FXFBS | – | – |
| 2018-2020 | Harley-Davidson | Softail Breakout 114 FXBRS | – | – |
| 2018-2020 | Harley-Davidson | Softail Street Bob FXBB | – | – |
| 2018-2020 | Harley-Davidson | Softail Slim FLSL | – | – |
| 2018-2020 | Harley-Davidson | Softail Deluxe FLDE | – | – |
| 2018-2020 | Harley-Davidson | Softail Low Rider FXLR | – | – |
| 2018-2020 | Harley-Davidson | Softail Heritage Classic FLHC | – | – |
| 2018-2020 | Harley-Davidson | Softail Sport Glide FLSB | – | – |
| 2018-2020 | Harley-Davidson | Softail Fat Boy 114 FLFBS | – | – |
| 2018-2020 | Harley-Davidson | Softail Heritage Classic 114 FLHCS | – | – |
| 2018-2019 | Harley-Davidson | Softail Breakout FXBR | – | – |
| 2018-2019 | Harley-Davidson | Softail Fat Boy FLFB | – | – |
| 2018-2019 | Harley-Davidson | Softail Fat Bob FXFB | – | – |
| 2018-2019 | Harley-Davidson | CVO Road Glide Custom FLTRXSE | – | – |
| 2017-2020 | Harley-Davidson | Road King Special FLHRXS | – | – |
| 2017-2020 | Harley-Davidson | Road Glide Special FLTRXS | – | – |
| 2017-2020 | Harley-Davidson | Street Glide Special FLHXS | – | – |
| 2017-2020 | Harley-Davidson | Freewheeler FLRT | – | – |
| 2017-2020 | Harley-Davidson | Tri Glide Ultra Classic FLHTCUTG | – | – |
| 2017-2020 | Harley-Davidson | CVO Electra Glide Ultra Limited FLHTKSE | – | – |
| 2017-2020 | Harley-Davidson | Electra Glide Ultra Limited FLHTK | – | – |
| 2017-2020 | Harley-Davidson | Road Glide Custom FLTRX | – | – |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Limited Low FLHTKL | – | – |
| 2017-2019 | Harley-Davidson | Street Glide EFI FLHX | – | – |
| 2017-2019 | Harley-Davidson | Road King EFI FLHR | – | – |
| 2017-2019 | Harley-Davidson | Road Glide Ultra FLTRU | – | – |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Classic EFI FLHTCUI | – | – |
| 2017-2019 | Harley-Davidson | CVO Street Glide FLHXSE | – | – |
| 2017-2018 | Harley-Davidson | Electra Glide Police FLHTPI | – | – |
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SPECS: Oil Cooled 310-1110A
| PRODUCT NAME | POWER PACKAGE |
| TYPE | ENGINE |
| FINISH | CHROME |
| COLOR/FINISH | BLACK GRANITE / HIGHLIGHTED FINS |
| BORE SIZE | 4.250″ |
| COMPRESSION RATIO | 11.1:1 |
| CAM DRIVE TYPE | GEAR |
| COOLING SYSTEM | OIL COOLED |
| UNITS | KIT |
| RIDING STYLE | STREET |
FITMENTS:
| 2020 | Harley-Davidson | Softail Low Rider S FXLRS | – | – |
| 2020 | Harley-Davidson | Road Glide Limited FLTRK | – | – |
| 2020 | Harley-Davidson | CVO Tri Glide FLHTCUTGSE | – | – |
| 2020 | Harley-Davidson | Road King EFI FLHR | – | – |
| 2020 | Harley-Davidson | CVO Street Glide FLHXSE | – | – |
| 2020 | Harley-Davidson | Street Glide EFI FLHX | – | – |
| 2020 | Harley-Davidson | Electra Glide Standard EFI FLHTI | – | – |
| 2020 | Harley-Davidson | CVO Road Glide Custom FLTRXSE | – | – |
| 2020 | Harley-Davidson | Softail Standard FXST | – | – |
| 2019-2020 | Harley-Davidson | FXDR 114 | – | – |
| 2019-2020 | Harley-Davidson | Electra Glide Police FLHTPI | – | – |
| 2019 | Harley-Davidson | Electra Glide Standard EFI FLHTI | – | – |
| 2018-2020 | Harley-Davidson | Softail Heritage Classic 114 FLHCS | – | – |
| 2018-2020 | Harley-Davidson | Softail Street Bob FXBB | – | – |
| 2018-2020 | Harley-Davidson | Softail Sport Glide FLSB | – | – |
| 2018-2020 | Harley-Davidson | Softail Heritage Classic FLHC | – | – |
| 2018-2020 | Harley-Davidson | Softail Fat Bob 114 FXFBS | – | – |
| 2018-2020 | Harley-Davidson | Softail Deluxe FLDE | – | – |
| 2018-2020 | Harley-Davidson | Softail Breakout 114 FXBRS | – | – |
| 2018-2020 | Harley-Davidson | Softail Low Rider FXLR | – | – |
| 2018-2020 | Harley-Davidson | Softail Fat Boy 114 FLFBS | – | – |
| 2018-2020 | Harley-Davidson | Softail Slim FLSL | – | – |
| 2018-2019 | Harley-Davidson | Softail Fat Boy FLFB | – | – |
| 2018-2019 | Harley-Davidson | Softail Breakout FXBR | – | – |
| 2018-2019 | Harley-Davidson | Softail Fat Bob FXFB | – | – |
| 2018-2019 | Harley-Davidson | CVO Road Glide Custom FLTRXSE | – | – |
| 2017-2020 | Harley-Davidson | Electra Glide Ultra Limited FLHTK | – | – |
| 2017-2020 | Harley-Davidson | Street Glide Special FLHXS | – | – |
| 2017-2020 | Harley-Davidson | Freewheeler FLRT | – | – |
| 2017-2020 | Harley-Davidson | Road King Special FLHRXS | – | – |
| 2017-2020 | Harley-Davidson | Road Glide Special FLTRXS | – | – |
| 2017-2020 | Harley-Davidson | CVO Electra Glide Ultra Limited FLHTKSE | – | – |
| 2017-2020 | Harley-Davidson | Tri Glide Ultra Classic FLHTCUTG | – | – |
| 2017-2020 | Harley-Davidson | Road Glide Custom FLTRX | – | – |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Limited Low FLHTKL | – | – |
| 2017-2019 | Harley-Davidson | Street Glide EFI FLHX | – | – |
| 2017-2019 | Harley-Davidson | Road King EFI FLHR | – | – |
| 2017-2019 | Harley-Davidson | Road Glide Ultra FLTRU | – | – |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Classic EFI FLHTCUI | – | – |
| 2017-2019 | Harley-Davidson | CVO Street Glide FLHXSE | – | – |
| 2017-2018 | Harley-Davidson | Electra Glide Police FLHTPI | – | – |
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SPECS: Water Cooled 310-1102A
| PRODUCT NAME | POWER PACKAGE |
| TYPE | ENGINE |
| FINISH | CHROME |
| COLOR/FINISH | HIGHLIGHTED FINS / WRINKLE BLACK |
| BORE SIZE | 4.250″ |
| COMPRESSION RATIO | 11.1:1 |
| CAM DRIVE TYPE | GEAR |
| COOLING SYSTEM | WATER COOLED |
| UNITS | KIT |
| RIDING STYLE | STREET |
FITMENTS:
| 2020 | Harley-Davidson | Road Glide Limited FLTRK | – | – |
| 2020 | Harley-Davidson | CVO Tri Glide FLHTCUTGSE | – | – |
| 2020 | Harley-Davidson | Softail Low Rider S FXLRS | – | – |
| 2020 | Harley-Davidson | Road King EFI FLHR | – | – |
| 2020 | Harley-Davidson | CVO Street Glide FLHXSE | – | – |
| 2020 | Harley-Davidson | Street Glide EFI FLHX | – | – |
| 2020 | Harley-Davidson | Electra Glide Standard EFI FLHTI | – | – |
| 2020 | Harley-Davidson | CVO Road Glide Custom FLTRXSE | – | – |
| 2020 | Harley-Davidson | Softail Standard FXST | – | – |
| 2019-2020 | Harley-Davidson | FXDR 114 | – | – |
| 2019-2020 | Harley-Davidson | Electra Glide Police FLHTPI | – | – |
| 2019 | Harley-Davidson | Electra Glide Standard EFI FLHTI | – | – |
| 2018-2020 | Harley-Davidson | Softail Low Rider FXLR | – | – |
| 2018-2020 | Harley-Davidson | Softail Heritage Classic FLHC | – | – |
| 2018-2020 | Harley-Davidson | Softail Sport Glide FLSB | – | – |
| 2018-2020 | Harley-Davidson | Softail Fat Bob 114 FXFBS | – | – |
| 2018-2020 | Harley-Davidson | Softail Street Bob FXBB | – | – |
| 2018-2020 | Harley-Davidson | Softail Deluxe FLDE | – | – |
| 2018-2020 | Harley-Davidson | Softail Fat Boy 114 FLFBS | – | – |
| 2018-2020 | Harley-Davidson | Softail Breakout 114 FXBRS | – | – |
| 2018-2020 | Harley-Davidson | Softail Heritage Classic 114 FLHCS | – | – |
| 2018-2020 | Harley-Davidson | Softail Slim FLSL | – | – |
| 2018-2019 | Harley-Davidson | Softail Fat Bob FXFB | – | – |
| 2018-2019 | Harley-Davidson | Softail Fat Boy FLFB | – | – |
| 2018-2019 | Harley-Davidson | Softail Breakout FXBR | – | – |
| 2018-2019 | Harley-Davidson | CVO Road Glide Custom FLTRXSE | – | – |
| 2017-2020 | Harley-Davidson | Tri Glide Ultra Classic FLHTCUTG | – | – |
| 2017-2020 | Harley-Davidson | Road King Special FLHRXS | – | – |
| 2017-2020 | Harley-Davidson | Road Glide Special FLTRXS | – | – |
| 2017-2020 | Harley-Davidson | Electra Glide Ultra Limited FLHTK | – | – |
| 2017-2020 | Harley-Davidson | CVO Electra Glide Ultra Limited FLHTKSE | – | – |
| 2017-2020 | Harley-Davidson | Freewheeler FLRT | – | – |
| 2017-2020 | Harley-Davidson | Street Glide Special FLHXS | – | – |
| 2017-2020 | Harley-Davidson | Road Glide Custom FLTRX | – | – |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Limited Low FLHTKL | – | – |
| 2017-2019 | Harley-Davidson | Street Glide EFI FLHX | – | – |
| 2017-2019 | Harley-Davidson | Road King EFI FLHR | – | – |
| 2017-2019 | Harley-Davidson | Road Glide Ultra FLTRU | – | – |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Classic EFI FLHTCUI | – | – |
| 2017-2019 | Harley-Davidson | CVO Street Glide FLHXSE | – | – |
| 2017-2018 | Harley-Davidson | Electra Glide Police FLHTPI | – | – |
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SPECS: Water Cooled 310-1108A
| PRODUCT NAME | POWER PACKAGE |
| TYPE | ENGINE |
| FINISH | CHROME |
| COLOR/FINISH | BLACK GRANITE / HIGHLIGHTED FINS |
| BORE SIZE | 4.250″ |
| COMPRESSION RATIO | 11.1:1 |
| CAM DRIVE TYPE | GEAR |
| COOLING SYSTEM | WATER COOLED |
| UNITS | KIT |
| RIDING STYLE | STREET |
FITMENTS:
| 2020 | Harley-Davidson | Softail Low Rider S FXLRS | – | – |
| 2020 | Harley-Davidson | CVO Tri Glide FLHTCUTGSE | – | – |
| 2020 | Harley-Davidson | Road Glide Limited FLTRK | – | – |
| 2020 | Harley-Davidson | Road King EFI FLHR | – | – |
| 2020 | Harley-Davidson | CVO Street Glide FLHXSE | – | – |
| 2020 | Harley-Davidson | Street Glide EFI FLHX | – | – |
| 2020 | Harley-Davidson | Electra Glide Standard EFI FLHTI | – | – |
| 2020 | Harley-Davidson | CVO Road Glide Custom FLTRXSE | – | – |
| 2020 | Harley-Davidson | Softail Standard FXST | – | – |
| 2019-2020 | Harley-Davidson | FXDR 114 | – | – |
| 2019-2020 | Harley-Davidson | Electra Glide Police FLHTPI | – | – |
| 2019 | Harley-Davidson | Electra Glide Standard EFI FLHTI | – | – |
| 2018-2020 | Harley-Davidson | Softail Street Bob FXBB | – | – |
| 2018-2020 | Harley-Davidson | Softail Slim FLSL | – | – |
| 2018-2020 | Harley-Davidson | Softail Low Rider FXLR | – | – |
| 2018-2020 | Harley-Davidson | Softail Fat Bob 114 FXFBS | – | – |
| 2018-2020 | Harley-Davidson | Softail Heritage Classic FLHC | – | – |
| 2018-2020 | Harley-Davidson | Softail Sport Glide FLSB | – | – |
| 2018-2020 | Harley-Davidson | Softail Breakout 114 FXBRS | – | – |
| 2018-2020 | Harley-Davidson | Softail Deluxe FLDE | – | – |
| 2018-2020 | Harley-Davidson | Softail Heritage Classic 114 FLHCS | – | – |
| 2018-2020 | Harley-Davidson | Softail Fat Boy 114 FLFBS | – | – |
| 2018-2019 | Harley-Davidson | Softail Breakout FXBR | – | – |
| 2018-2019 | Harley-Davidson | Softail Fat Boy FLFB | – | – |
| 2018-2019 | Harley-Davidson | Softail Fat Bob FXFB | – | – |
| 2018-2019 | Harley-Davidson | CVO Road Glide Custom FLTRXSE | – | – |
| 2017-2020 | Harley-Davidson | Tri Glide Ultra Classic FLHTCUTG | – | – |
| 2017-2020 | Harley-Davidson | Road Glide Special FLTRXS | – | – |
| 2017-2020 | Harley-Davidson | Road King Special FLHRXS | – | – |
| 2017-2020 | Harley-Davidson | CVO Electra Glide Ultra Limited FLHTKSE | – | – |
| 2017-2020 | Harley-Davidson | Street Glide Special FLHXS | – | – |
| 2017-2020 | Harley-Davidson | Electra Glide Ultra Limited FLHTK | – | – |
| 2017-2020 | Harley-Davidson | Freewheeler FLRT | – | – |
| 2017-2020 | Harley-Davidson | Road Glide Custom FLTRX | – | – |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Limited Low FLHTKL | – | – |
| 2017-2019 | Harley-Davidson | Street Glide EFI FLHX | – | – |
| 2017-2019 | Harley-Davidson | Road King EFI FLHR | – | – |
| 2017-2019 | Harley-Davidson | Road Glide Ultra FLTRU | – | – |
| 2017-2019 | Harley-Davidson | Electra Glide Ultra Classic EFI FLHTCUI | – | – |
| 2017-2019 | Harley-Davidson | CVO Street Glide FLHXSE | – | – |
| 2017-2018 | Harley-Davidson | Electra Glide Police FLHTPI | – | – |
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Additional information
| Weight | 47 lbs |
|---|---|
| Dimensions | 28 × 21 × 13 in |
| Fitment | See Current Fitments In Product Description |
| Finish | HIGHLIGHTED FINS / BLACK GRANITE, HIGHLIGHTED FINS / WRINKLE BLACK, HIGHLIGHTED FINS / WRINKLE BLACK / BLACK GRANITE |
| Options | Oil Cooled Engine, Water Cooled Engine |
| BRAND | S&S |
