Standard cylinder bore: 4.016″ (102mm). 1st ring: 1.2mm. 2nd ring: 1.2mm. Oil ring: 2.5mm. Stock replacement for 114″ models. Comes with a chrome top ring, Napier 2nd ductile iron. ring and a chrome-plated 3-piece oil ring. Tech Tip: Piston Grooves vs Piston Rings. It is not difficult to determine whether a set of Hastings piston rings will fit a particular piston. You need to measure the height of the piston groove in the piston. The top 2 grooves will be for the compression rings, the bottom groove will be for the oil ring. In most cases Hastings oil rings are the low tension 3 piece flexible breather type. Ring heights are listed for reference. Technical advice: oversizing the piston. For each oversized cylinder the diameter will increase by 0.010″ (0.254 mm). The standard cylinder bore is listed for reference. (Information provided by Hastings Manufacturing Company, Inc.) 17-21 114″M8

Compatible with:
BRAND | YEARS | FAMILY | MODEL
—–
Harley Davidson | 2019-2020 | Police | Electra Glide Standard Police FLHTP
Harley Davidson | 2025 | Police | Police Electra Glide
Harley Davidson | 2021-2024 | Police | Police Electra Glide FLHTP
Harley Davidson | 2025 | Police | Police Road Glide
Harley Davidson | 2024 | Police | Police Road Glide FLTRXP
Harley Davidson | 2025 | Police | Police Road King
Harley Davidson | 2021-2024 | Police | Police Road King FLHP
Harley Davidson | 2019-2020 | Police | Road King Police FLHP
Harley Davidson | 2018 | Softail | Breakout 114 Anniversary FXBRS
Harley Davidson | 2018-2022 | Softail | Breakout 114 FXBRS
Harley Davidson | 2019 | Softail | FXDR 114 FXDRS
Harley Davidson | 2018 | Softail | Fat Boy 114 Anniversary FLFBS
Harley Davidson | 2020 | Softail | Fat Boy 114 Anniversary FLFBSANV
Harley Davidson | 2018-2024 | Softail | Fat Boy 114 FLFBS
Harley Davidson | 2023 | Softail | Fat Boy Anniversary FLFBSANV
Harley Davidson | 2018 | Softail | Heritage Classic 114 Anniversary FLHCS
Harley Davidson | 2018-2024 | Softail | Heritage Classic 114 FLHCS
Harley Davidson | 2023 | Softail | Heritage Classic Anniversary FLHCSANV
Harley Davidson | 2024 | Softail | Hydra-Glide Revival FLI
Harley Davidson | 2020-2021 | Softail | Low Rider S FXLRS
Harley Davidson | 2021-2024 | Softail | STREET Bob 114 FXBBS
Harley Davidson | 2023 | Touring | Electra Glide Highway King FLHFB
Harley Davidson | 2021 | Touring | FLH Revival
Harley Davidson | 2023 | Touring | Road Glide Anniversary FLTRXSANV
Harley Davidson | 2020-2024 | Touring | Road Glide Limited FLTRK
Harley Davidson | 2019-2023 | Touring | Road Glide Special FLTRXS
Harley Davidson | 2019 | Touring | Road Glide Ultra FLTRU
Harley Davidson | 2025 | Touring | Road King Special
Harley Davidson | 2019-2024 | Touring | Road King Special FLHRXS
Harley Davidson | 2023 | Touring | STREET Glide Anniversary FLHXSANV
Harley Davidson | 2019-2023 | Touring | STREET Glide Special FLHXS
Harley Davidson | 2023 | Touring | Ultra Limited Anniversary FLHTKANV
Harley Davidson | 2019-2024 | Touring | Ultra Limited FLHTK
Harley Davidson | 2019 | Touring | Ultra Limited Low FLHTKL
Harley Davidson | 2019-2023 | Touring | Ultra Limited Shrine Edition FLHTK
Harley Davidson | 2025 | Trikes | Freewheeler
Harley Davidson | 2019-2024 | Trikes | Freewheeler FLRT
Harley Davidson | 2025 | Trikes | Road Glide 3
Harley Davidson | 2023-2024 | Trikes | Road Glide 3 FLTRT
Harley Davidson | 2025 | Trikes | Tri Glide ULTRA
Harley Davidson | 2023 | Trikes | Tri Glide Ultra Anniversary FLHTCUTGANV
Harley Davidson | 2019-2024 | Trikes | Tri Glide Ultra FLHTCUTG