The WISECO Piston Kit features a 4.080-inch bore, 114 CI specification, and 107-inch M8 application. Designed with ArmorX™ piston coating for protection in extreme conditions and reduced wear, the kit also uses ArmorFit™ skirt coating that auto-adjusts to the cylinder wall, eliminating the need to measure clearance. The result is smooth, quiet, trouble-free operation.
Its dome design improves flame travel to maximize air/fuel burn efficiency, while the 11:1 high-compression ratio is designed to add power. A Superfinish piston pin reduces friction and improves scuff resistance. Enhanced pin oiling supports improved lubrication and reduced friction, while augmented ring land details help improve ring seal and function. Dedicated rings provide precise fit, improved compression, and oil control.
The kit includes two pistons, rings, piston pins, and circlips. It is made in the USA and fits OEM and Screamin’ Eagle cylinder heads. Distributor part number: K2785. Manufacturer part number: K2785.
Vehicle fitment includes the 2018 and 2020 Harley-Davidson FLHC Heritage Classic 107; 2017 Harley-Davidson FLHRXS Road King Special; 2017 Harley-Davidson FLHTCU Electra Glide Ultra Classic; 2018 and 2020 Harley-Davidson FLSL Softail Slim 107; 2019 Harley-Davidson FXLR Low Rider 107; 2022 Harley-Davidson FLHR Road King; 2018 Harley-Davidson FLHTKL Ultra Limited Low; and 2018 Harley-Davidson FLHX Street Glide.
Features:
- ArmorX™ Coating: Provides piston protection in extreme conditions and helps reduce wear.
- ArmorFit™ Skirt Coating: Auto-adjusts to the cylinder wall, eliminating the need to measure clearance.
- Dome Design: Improves flame travel to maximize air/fuel burn efficiency.
- High Compression: 11:1 compression ratio designed for added power.
- Piston Pin: Superfinish surface reduces friction and improves scuff resistance.
- Enhanced Pin Oiling: Supports improved lubrication and reduced friction.
- Ring Land Details: Augmented design helps improve ring seal and function.
- Dedicated Rings: Provide precise fit, improved compression, and oil control.
- Kit Contents: Includes two pistons, rings, piston pins, and circlips.
- Cylinder Head Fitment: Fits OEM and Screamin’ Eagle cylinder heads.
- Origin: Made in the USA.
- Manufacturer Part Number: K2785.
Fitment:
2017 Harley-Davidson FLHR Road King
2017 Harley-Davidson FLHRXS Road King Special
2017 Harley-Davidson FLHTCU Electra Glide Ultra Classic
2017 Harley-Davidson FLHTCUTG Tri Glide Ultra
2017 Harley-Davidson FLHTK Ultra Limited
2017 Harley-Davidson FLHTKL Ultra Limited Low
2017 Harley-Davidson FLHX Street Glide
2017 Harley-Davidson FLHXS Street Glide Special
2017 Harley-Davidson FLRT Freewheeler
2017 Harley-Davidson FLTRU Road Glide Ultra
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 FLHRXS Road King Special
2018 Harley-Davidson FLHTCU Electra Glide Ultra Classic
2018 Harley-Davidson FLHTCUTG Tri Glide Ultra
2018 Harley-Davidson FLHTK Ultra Limited
2018 Harley-Davidson FLHTKL Ultra Limited Low
2018 Harley-Davidson FLHX Street Glide
2018 Harley-Davidson FLHXS Street Glide Special
2018 Harley-Davidson FLRT Freewheeler
2018 Harley-Davidson FLSB Sport Glide 107
2018 Harley-Davidson FLSL Softail Slim 107
2018 Harley-Davidson FLTRU Road Glide Ultra
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 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 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 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 FXST Softail Standard 107
2023 Harley-Davidson FLHX Street Glide
2023 Harley-Davidson FLSB Sport Glide 107
2023 Harley-Davidson FXST Softail Standard 107
2024 Harley-Davidson FLSB Sport Glide 107
2024 Harley-Davidson FXST Softail Standard 107