107 to 124″ big bore kit
- We recommend using S&S Cycle Head Bolts for M8, part number 900-1006 for all big bore applications
- includes gaskets and hardware required for installation
- Bolt on kit. No Machining Required
- 11:1 compression ratio
- Wrinkle black finish
- Highlighted Fins
- Forged Pistons
- 4.250″ bore
Fitment:
Harley Davidson FLFBS Fat Boy 114 Base 2018 to 2021
Harley Davidson FLHCS Heritage Classic 114 Base 2018 to 2021
Harley Davidson FLHR Road King Base 2017 to 2021
Harley Davidson FLHRC Road King Classic Base 2017 to 2019
Harley Davidson FLHRXS Road King Special Base 2017 to 2021
Harley Davidson FLHTCU Electra Glide Ultra Classic Base 2017 to 2019
Harley Davidson FLHTK Ultra Limited Base 2017 to 2021
Harley Davidson FLHTKL Ultra Limited Low Base 2017 to 2020
Harley Davidson FLHX Street Glide Base 2017 to 2021
Harley Davidson FLHXS Street Glide Special Base 2017 to 2021
Harley Davidson FLTRU Road Glide Ultra Base 2017 to 2020
Harley Davidson FLTRX Road Glide Base 2017 to 2021
Harley Davidson FXBRS Breakout 114 Base 2018 to 2020
Harley Davidson FXFBS Fat Bob 114 Base 2018 to 2021







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