Inspected used parts for the 2020-present Harley-Davidson FXST Softail Standard are stocked at Sun Coast Cycle Sports. The Standard is the entry-level Softail, powered by the Milwaukee-Eight 107 engine (1746cc) with a 6-speed transmission, wrapped in a stripped-down bobber aesthetic that features mini-ape handlebars, a solo tuck-and-roll seat, and a blacked-out powertrain. Our Florida powersports team breaks down donor FXST motorcycles, evaluates each component, photographs it under its own SKU, and ships it free across the continental United States.
Softail Standard FXST generation and parts compatibility
The FXST Softail Standard was introduced for the 2020 model year as a bare-bones entry point to the Milwaukee-Eight Softail family. All model years use the same M8 107 V-twin (1746cc) with dual counterbalancers, a 6-speed transmission, and the M8-generation Softail chassis with a hidden rear monoshock and Showa Dual Bending Valve front fork.
| Years | Engine | Frame | Notes |
|---|
| 2020-2024 | Milwaukee-Eight 107 (1746cc) | M8 Softail, monoshock | Vivid Black only, solo seat, mid-mount controls |
| 2025+ | Milwaukee-Eight 117 Classic (1923cc) | M8 Softail, monoshock | Engine upgrade to 117ci, updated features |
Within the 2020-2024 production run, parts interchange is essentially universal. Harley made only minor cosmetic changes across these years (wheel design shifted from spoked to cast on some model years). For 2025, the Standard received the M8 117 Classic engine as part of Harley's lineup-wide displacement increase. Engine top-end components, intake, and exhaust from the 2025+ will not interchange with the 2020-2024 M8 107.
The FXST shares its M8 107 powertrain and Softail chassis with numerous 2018+ Softail siblings: the FXBB Street Bob (107ci), FXFB Fat Bob (107ci or 114ci), FLSB Sport Glide, and FLDE Softail Deluxe (M8 era). Engine, transmission, primary drive, and most frame/suspension components interchange across all M8 107 Softail models. The FXST's unique elements are limited to its specific seat, handlebars, exhaust shields, and the stripped-down chrome/black trim package. The FXST is essentially a Street Bob with fewer accessories and a smaller engine option, making it a common donor platform for custom builds.
Common Softail Standard FXST failure points and replacement parts
Rear shock absorber mounting tab (NHTSA 23V591, 25V375): The 2022 FXRST (note: some FXST models may also be affected depending on the shock adjuster style) was included in Harley's recall for the rear shock pre-load adjuster mounting tab that can fracture and contact the rear tire. Check your VIN against the recall database, as not all Softail models with this shock adjuster style are affected. The remedy involves a redesigned bracket and hardware.
Milwaukee-Eight 107 heat output: Like all air/oil-cooled M8 engines, the 107 generates considerable heat that radiates through the frame and cases. Riders in hot climates report significant heat soak on the inner thighs, particularly at low speeds and in stop-and-go riding. An oil cooler (factory-equipped, mounted between the downtubes) mitigates this, but the heat is an inherent characteristic of the solid-mounted, air-cooled design.
Compensator noise at idle and low RPM: Some M8 107 Softails develop a metallic rattle or clunk at idle and during low-RPM deceleration. This is related to the compensator assembly in the primary drive, similar to earlier Twin Cam models. The noise is often more pronounced on cold starts and typically does not indicate an imminent failure, but can be resolved with an upgraded aftermarket compensator.
Side stand retraction during maneuvering: Multiple FXST owners report the side stand folding up unexpectedly when maneuvering at walking speed, particularly when the bike is leaned to the left. This is a design characteristic of the stand geometry and can lead to a tip-over if the rider is not prepared. Aftermarket side stand extensions or replacement stands address the issue.
Commonly replaced Softail Standard FXST parts
- Exhaust system (frequently replaced with aftermarket slip-ons or 2-into-1)
- Solo seat (commonly upgraded for comfort)
- Handlebar and riser assembly
- Air cleaner and intake
- Rear shock absorber and mounting hardware
- Foot controls (mid to forward control conversions)
- Compensator sprocket assembly
- Brake pads and rotors
Frequently asked questions
Q: What is the difference between the FXST Standard and the FXBB Street Bob?
The FXST and FXBB share the same M8 Softail frame, 6-speed transmission, and most chassis components. The Street Bob uses the M8 114 engine (1868cc) while the Standard uses the M8 107 (1746cc). The Street Bob also includes fork gaiters, a slightly different seat, and additional finish options beyond Vivid Black. Aside from the engine displacement and minor trim differences, chassis, suspension, wheels, brakes, and most bolt-on parts interchange between the two models.
Q: Can I upgrade my FXST from the M8 107 to a 114 or 117?
Yes. The M8 107, 114, and 117 share the same crankcase architecture. Harley offers the Screamin' Eagle Stage IV kit that takes the 107 to 128ci (2098cc) using new cylinders, pistons, heads, cam, and a larger throttle body. You can also swap in complete M8 114 or 117 top-end components (cylinders, pistons, heads) onto the 107 cases, though a tuner or ECM reflash is required to match the larger displacement. The 107 cases accept all M8 displacement configurations.
Q: Will Twin Cam Softail parts fit my M8-era FXST?
No. The 2018 Softail redesign was a complete platform change. The Milwaukee-Eight Softail uses a different frame, engine, transmission, suspension design (monoshock vs. dual horizontal shocks), and electrical architecture than the 2000-2017 Twin Cam Softails. No drivetrain or frame components interchange between the two platforms. Some universal accessories like mirrors, grips, and lighting may physically fit, but all model-specific parts are incompatible.
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