Motorshop M8 128 Inch Big Bore Bolt-On Cylinder Kit For Harley Davidson
Increase your Harley's displacement to 128 cubic inches with the Motorshop M8 128-inch Big Bore Bolt-On Cylinder Kit, designed to install directly on the factory engine base without case boring.
The cylinders feature a black finish with machined fins, delivering a durable, clean look that maintains a stock-style silhouette while improving cooling efficiency.
The kit converts engines from 104 inch or 117 inch to 128 inch, providing enhanced displacement for stronger torque and quicker throttle response. It includes precision-fitted forged pistons with an 11:1 compression ratio for improved power and durability, along with a gasket set that includes head and base gaskets for reliable sealing.
Designed for straightforward installation, this bolt-on upgrade fits directly onto the factory engine without modifications, making it a practical choice for riders seeking a trusted increase in performance.
Made in the USA, the Motorshop M8 128-inch kit is compatible with Harley Davidson models from 2017 to 2023, including FLHR, FLHT, FLHX, FLST, FLT, and FXST series.
- Precision-fitted cylinders for factory-base fit without case boring
- Forged pistons with 11:1 compression for increased power and durability
- Head and base gasket set for reliable sealing
- Easy installation on the factory engine without modifications
- Made in the USA
This M8 engine design is made for displacement increases. Designed to fit on factory engine base without case boring. Cylinder has a black finish with macined fins. Converts 104 inch - 117 inch to 128 inch.
Upgrade your Harley Davidson with the Motorshop M8 128-inch Big Bore Bolt-On Cylinder Kit, designed for a seamless fit on factory engine bases without the need for case boring. This kit includes precision-fitted forged pistons with an 11:1 compression ratio, ensuring enhanced performance and durability. The set also features head and base gaskets tailored for easy installation and reliable sealing, making it a practical choice for riders seeking a boost in engine power. Crafted in the USA, this kit combines quality craftsmanship with straightforward installation for a variety of Harley Davidson models from 2017 to 2023, including FLT, FXST, and FLST series.
Features:
- Precision Fitted Cylinders: Engineered for optimal fit and performance on factory engine bases without case boring
- Forged Pistons: 11:1 compression forged pistons for increased power and durability
- Gasket Set: Includes head and base gaskets designed for reliable sealing and long-lasting performance
- Easy Installation: Designed to fit directly onto the factory engine without modifications
- Made in the USA: Crafted with high-quality standards for durability and reliable performance
Fitment:
Harley Davidson FLHR 2017
Harley Davidson FLHR 2018
Harley Davidson FLHR 2019
Harley Davidson FLHR 2020
Harley Davidson FLHR 2021
Harley Davidson FLHR 2022
Harley Davidson FLHR 2023
Harley Davidson FLHT 2017
Harley Davidson FLHT 2018
Harley Davidson FLHT 2019
Harley Davidson FLHT 2020
Harley Davidson FLHT 2021
Harley Davidson FLHT 2022
Harley Davidson FLHT 2023
Harley Davidson FLHX 2017
Harley Davidson FLHX 2018
Harley Davidson FLHX 2019
Harley Davidson FLHX 2020
Harley Davidson FLHX 2021
Harley Davidson FLHX 2022
Harley Davidson FLHX 2023
Harley Davidson FLST 2017
Harley Davidson FLST 2018
Harley Davidson FLST 2019
Harley Davidson FLST 2020
Harley Davidson FLST 2021
Harley Davidson FLST 2022
Harley Davidson FLST 2023
Harley Davidson FLT 2017
Harley Davidson FLT 2018
Harley Davidson FLT 2019
Harley Davidson FLT 2020
Harley Davidson FLT 2021
Harley Davidson FLT 2022
Harley Davidson FLT 2023
Harley Davidson FXST 2017
Harley Davidson FXST 2018
Harley Davidson FXST 2019
Harley Davidson FXST 2020
Harley Davidson FXST 2021
Harley Davidson FXST 2022
Harley Davidson FXST 2023
