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 cam chest
Debris screen in both scavenge pickups
Magnet in cam chest 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
Made in the U.S.A.
NOTE: Not recommended for Tri-Glide or other three wheel models including conversion due to lugging nature of these bikes.
2022
Harley-Davidson
Softail Low Rider ST FXLRST
-
-
2022
Harley-Davidson
Road Glide ST FLTRXST
-
-
2022
Harley-Davidson
Street Glide ST FLHXST
-
-
2021
Harley-Davidson
Electra Glide Revival
-
-
2020-2022
Harley-Davidson
Softail Low Rider S FXLRS
-
-
2020-2022
Harley-Davidson
Softail Standard FXST
-
-
2019-2022
Harley-Davidson
Electra Glide Standard EFI FLHTI
-
-
2019-2020
Harley-Davidson
FXDR 114
-
-
2018-2022
Harley-Davidson
Softail Street Bob FXBB
-
-
2018-2022
Harley-Davidson
Softail Fat Bob 114 FXFBS
-
-
2018-2022
Harley-Davidson
Softail Heritage Classic 114 FLHCS
-
-
2018-2022
Harley-Davidson
Softail Fat Boy 114 FLFBS
-
-
2018-2022
Harley-Davidson
CVO Road Glide Custom FLTRXSE
-
-
2018-2021
Harley-Davidson
Softail Heritage Classic FLHC
-
-
2018-2021
Harley-Davidson
Softail Slim FLSL
-
-
2018-2021
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 Low Rider FXLR
-
-
2018-2019
Harley-Davidson
Softail Breakout FXBR
-
-
2018-2019
Harley-Davidson
Softail Fat Bob FXFB
-
-
2018-2019
Harley-Davidson
Softail Fat Boy FLFB
-
-
2017-2022
Harley-Davidson
Street Glide Special FLHXS
-
-
2017-2022
Harley-Davidson
Road Glide Special FLTRXS
-
-
2017-2022
Harley-Davidson
Road King Special FLHRXS
-
-
2017-2022
Harley-Davidson
Road King EFI FLHR
-
-
2017-2022
Harley-Davidson
CVO Street Glide FLHXSE
-
-
2017-2022
Harley-Davidson
Street Glide EFI FLHX
-
-
2017-2022
Harley-Davidson
Road Glide Custom FLTRX
-
-
2017-2021
Harley-Davidson
Electra Glide Police FLHTPI
-
-
2017-2019
Harley-Davidson
Road Glide Ultra FLTRU
-
-
2017-2019
Harley-Davidson
Electra Glide Ultra Classic EFI FLHTCUI
-
-
2017
Harley-Davidson
Softail Slim FLS
-
-
2017
Harley-Davidson
Fat Boy S FLSTFBS
-
-
2017
Harley-Davidson
Softail Slim S FLSS
-
-
2017
Harley-Davidson
Fat Boy Lo FLSTFB
-
-
2017
Harley-Davidson
CVO Pro Street Breakout FXSE
-
-
2017
Harley-Davidson
Softail Fat Boy EFI FLSTFI
-
-
2017
Harley-Davidson
Softail Deluxe EFI FLSTNI
-
-
2017
Harley-Davidson
Softail Heritage Classic EFI FLSTCI
-
-
2017
Harley-Davidson
Breakout FXSB
-
-
Fitment Disclosure
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.
Had some fuelling issues in the midrange - tough to find ECUs for bikes of this age these days. Power commander sorted it out, very happy with my purchase and Bill's service.
Amazing product and phenomenal change is performance . I really loved it
Thanks to Bills performance for the amazing service and quick shipping
Highly recommended service
Everything about this transaction was great. I was contacted when it was going to be a day behind leaving. Postage to Australia very reasonable and fast, product was the expected great quality. I would use again anytime.