S&S Cycle Power Pack Water Cooled 550G for 114/117-inch M8 engines features a wrinkle black finish with highlight detailing and chrome pushrod tubes. Manufacturer part number 310-1230D. This big-bore bolt-in kit increases a 114/117-inch engine with a 4.5-inch stroke M8 to a 132-inch engine without case machining. Intake and rocker cover gaskets are not included.
The kit includes 4.32-inch bore cylinders with 11.0:1 compression-ratio forged pistons, S&S oil pump and cam plate with a blue anodized finish, removable passage plugs for servicing, independent scavenge sections for the flywheel cavity and cam chest, debris screens in both scavenge pickups, and a cam-chest magnet to help prevent debris from entering the oil pump. Oil flow capacity is increased on both the feed and scavenge sides, and the adjustable pressure relief valve can be adjusted with the unit installed in the engine.
Additional components include Quickee pushrods, S&S premium tappets, hard-anodized black-coated billet aluminum tappet cuffs, S&S 550 cams designed for big-bore applications, and S&S valve springs with a high-performance conical single-wire design for cams up to 0.605-inch lift. The kit is made in the USA, fits VVT models, and is not for Trike models. Fitment includes select 2018–2024 Harley-Davidson FLHTK Ultra Limited, FLHTKSE CVO Limited, FLTRK Road Glide Limited, FLTRXSE CVO Road Glide, and FLHXSE CVO Street Glide models as listed by the manufacturer.
Features:
- Brand: S&S Cycle
- Product: Power Pack Water Cooled 550G
- Manufacturer Part Number: 310-1230D
- Engine Application: Converts a 114/117-inch, 4.5-inch stroke M8 engine to a 132-inch engine without case machining
- Finish: Wrinkle black with highlight detailing and chrome pushrod tubes
- Cylinders and Pistons: 4.32-inch bore cylinders with 11.0:1 compression-ratio forged pistons
- Oil System: S&S oil pump and cam plate with increased oil feed and scavenge capacity
- Serviceability: Removable passage plugs and an adjustable pressure relief valve
- Debris Protection: Debris screens in both scavenge pickups and a cam-chest magnet
- Valve Train: Quickee pushrods, S&S premium tappets, billet aluminum tappet cuffs, S&S 550 cams, and conical single-wire valve springs
- VVT Compatibility: Fits VVT models
- Exclusion: Not for Trike models
- Gaskets: Intake and rocker cover gaskets are not included
- Vehicle Fitment: Select 2018–2024 Harley-Davidson FLTRXSE CVO Road Glide, FLHTK Ultra Limited, FLHTKSE CVO Limited, FLTRK Road Glide Limited, and FLHXSE CVO Street Glide models
Fitment:
2017 Harley-Davidson FLHTCU Electra Glide Ultra Classic
2017 Harley-Davidson FLHTK Ultra Limited
2017 Harley-Davidson FLHTKL Ultra Limited Low
2017 Harley-Davidson FLHTKSE CVO Limited
2017 Harley-Davidson FLHXSE CVO Street Glide
2017 Harley-Davidson FLTRU Road Glide Ultra
2018 Harley-Davidson FLHTCU Electra Glide Ultra Classic
2018 Harley-Davidson FLHTK Ultra Limited
2018 Harley-Davidson FLHTKL Ultra Limited Low
2018 Harley-Davidson FLHTKSE CVO Limited
2018 Harley-Davidson FLHXSE CVO Street Glide
2018 Harley-Davidson FLTRU Road Glide Ultra
2018 Harley-Davidson FLTRXSE CVO Road Glide
2019 Harley-Davidson FLHTCU Electra Glide Ultra Classic
2019 Harley-Davidson FLHTK Ultra Limited
2019 Harley-Davidson FLHTKL Ultra Limited Low
2019 Harley-Davidson FLHTKSE CVO Limited
2019 Harley-Davidson FLHXSE CVO Street Glide
2019 Harley-Davidson FLTRU Road Glide Ultra
2019 Harley-Davidson FLTRXSE CVO Road Glide
2020 Harley-Davidson FLHTK Ultra Limited
2020 Harley-Davidson FLHTKSE CVO Limited
2020 Harley-Davidson FLHXSE CVO Street Glide
2020 Harley-Davidson FLTRK Road Glide Limited
2020 Harley-Davidson FLTRXSE CVO Road Glide
2021 Harley-Davidson FLHTK Ultra Limited
2021 Harley-Davidson FLHTKSE CVO Limited
2021 Harley-Davidson FLHXSE CVO Street Glide
2021 Harley-Davidson FLTRK Road Glide Limited
2021 Harley-Davidson FLTRXSE CVO Road Glide
2022 Harley-Davidson FLHTK Ultra Limited
2022 Harley-Davidson FLHXSE CVO Street Glide
2022 Harley-Davidson FLTRK Road Glide Limited
2022 Harley-Davidson FLTRKSE CVO Road Glide Limited
2022 Harley-Davidson FLTRXSE CVO Road Glide
2023 Harley-Davidson FLHTK Ultra Limited
2023 Harley-Davidson FLHXSE CVO Street Glide
2023 Harley-Davidson FLTRK Road Glide Limited
2023 Harley-Davidson FLTRKSE CVO Road Glide Limited
2023 Harley-Davidson FLTRXSE CVO Road Glide
2024 Harley-Davidson FLHTK Ultra Limited
2024 Harley-Davidson FLTRK Road Glide Limited
2025 Harley-Davidson FLHXU Street Glide Ultra
2026 Harley-Davidson FLHXL Street Glide Limited
2026 Harley-Davidson FLHXLSE CVO Street Glide Limited
2026 Harley-Davidson FLTRXL Road Glide Limited