The WOSSNER Piston Kit is designed for applications using a 4.375-inch stroke, 117 CID, M8 configuration. The piston crown is anodized to improve resistance to extreme heat, with testing showing improved thermal diffusivity by up to 10%. The hardcoat anodize treatment enhances the piston's ability to manage heat and wear.
Anodize treatment also improves ring groove wear resistance by helping the surface handle sliding wear compared with non-treated surfaces. The kit includes the piston, piston rings, piston pin and retaining clips. Valve pocket specifications include a 1.780-inch intake diameter, 0.200-inch intake depth, 27-degree intake angle, 1.780-inch exhaust diameter, 0.200-inch exhaust depth and 27-degree exhaust angle.
Distributor part number: 09106683. Manufacturer part number: K4084D478-2. Fitment includes the 2019 and 2020 Harley-Davidson FLHC Heritage Classic 107, 2019 and 2022 Harley-Davidson FLHR Road King, 2019 Harley-Davidson FLHT Electra Glide Standard, 2020 Harley-Davidson FLHX Street Glide, 2017 Harley-Davidson FLRT Freewheeler, 2021 Harley-Davidson FLSB Sport Glide 107 and 2019 Harley-Davidson FLTRX Road Glide.
Features:
- Application: 4.375-inch stroke, 117 CID, M8 configuration
- Heat Resistance: Anodized piston crown improves resistance to extreme heat
- Thermal Diffusivity: Tested and proven to improve thermal diffusivity by up to 10%
- Hardcoat Treatment: Enhances the piston's ability to manage heat and wear
- Ring Groove Wear: Anodize treatment improves resistance to sliding wear compared with non-treated surfaces
- Kit Contents: Includes piston, piston rings, piston pin and retaining clips
- Intake Valve Pocket: 1.780-inch diameter, 0.200-inch depth and 27-degree angle
- Exhaust Valve Pocket: 1.780-inch diameter, 0.200-inch depth and 27-degree angle
- Fitment: Fits select 2017-2022 Harley-Davidson FLHC Heritage Classic 107, FLHR Road King, FLHT Electra Glide Standard, FLHX Street Glide, FLRT Freewheeler, FLSB Sport Glide 107 and FLTRX Road Glide applications
Fitment:
2017 Harley-Davidson FLHR Road King
2017 Harley-Davidson FLHTCU Electra Glide Ultra Classic
2017 Harley-Davidson FLHX Street Glide
2017 Harley-Davidson FLRT Freewheeler
2017 Harley-Davidson FLTRX Road Glide
2018 Harley-Davidson FLDE Deluxe 107
2018 Harley-Davidson FLFB Fat Boy 107
2018 Harley-Davidson FLHC Heritage Classic 107
2018 Harley-Davidson FLHR Road King
2018 Harley-Davidson FLHTCU Electra Glide Ultra Classic
2018 Harley-Davidson FLHX Street Glide
2018 Harley-Davidson FLRT Freewheeler
2018 Harley-Davidson FLSB Sport Glide 107
2018 Harley-Davidson FLSL Softail Slim 107
2018 Harley-Davidson FLTRX Road Glide
2018 Harley-Davidson FXBB Street Bob 107
2018 Harley-Davidson FXBR Breakout 107
2018 Harley-Davidson FXFB Fat Bob 107
2018 Harley-Davidson FXLR Low Rider 107
2019 Harley-Davidson FLDE Deluxe 107
2019 Harley-Davidson FLFB Fat Boy 107
2019 Harley-Davidson FLHC Heritage Classic 107
2019 Harley-Davidson FLHR Road King
2019 Harley-Davidson FLHT Electra Glide Standard
2019 Harley-Davidson FLHTCU Electra Glide Ultra Classic
2019 Harley-Davidson FLHX Street Glide
2019 Harley-Davidson FLSB Sport Glide 107
2019 Harley-Davidson FLSL Softail Slim 107
2019 Harley-Davidson FLTRX Road Glide
2019 Harley-Davidson FXBB Street Bob 107
2019 Harley-Davidson FXBR Breakout 107
2019 Harley-Davidson FXFB Fat Bob 107
2019 Harley-Davidson FXLR Low Rider 107
2020 Harley-Davidson FLDE Deluxe 107
2020 Harley-Davidson FLFB Fat Boy 107
2020 Harley-Davidson FLHC Heritage Classic 107
2020 Harley-Davidson FLHR Road King
2020 Harley-Davidson FLHT Electra Glide Standard
2020 Harley-Davidson FLHX Street Glide
2020 Harley-Davidson FLSB Sport Glide 107
2020 Harley-Davidson FLSL Softail Slim 107
2020 Harley-Davidson FLTRX Road Glide
2020 Harley-Davidson FXBB Street Bob 107
2020 Harley-Davidson FXFB Fat Bob 107
2020 Harley-Davidson FXLR Low Rider 107
2020 Harley-Davidson FXST Softail Standard 107
2021 Harley-Davidson FLHC Heritage Classic 107
2021 Harley-Davidson FLHR Road King
2021 Harley-Davidson FLHT Electra Glide Standard
2021 Harley-Davidson FLHX Street Glide
2021 Harley-Davidson FLSB Sport Glide 107
2021 Harley-Davidson FLSL Softail Slim 107
2021 Harley-Davidson FLTRX Road Glide
2021 Harley-Davidson FXST Softail Standard 107
2022 Harley-Davidson FLHR Road King
2022 Harley-Davidson FLHT Electra Glide Standard
2022 Harley-Davidson FLHX Street Glide
2022 Harley-Davidson FLSB Sport Glide 107
2022 Harley-Davidson FLTRX Road Glide
2022 Harley-Davidson FXST Softail Standard 107
2023 Harley-Davidson FLHX Street Glide
2023 Harley-Davidson FLSB Sport Glide 107
2023 Harley-Davidson FLTRX Road Glide
2023 Harley-Davidson FXST Softail Standard 107
2024 Harley-Davidson FLSB Sport Glide 107
2024 Harley-Davidson FXST Softail Standard 107