Black Inline Spring Fork Assembly 27″ Length – Fits FLSTS
In-house springer production — Every front end is manufactured in our own facility, ensuring strict control over the 27″ rocker stud to top tree length for your FLSTS build.
Product Specification
| Parameter | Value |
|---|---|
| Part Type | Inline Spring Fork Assembly |
| Finish | Black (forks); Chrome (3/4″ axle, top tree, acron nuts, risers) |
| Length (Rocker Stud to Top Tree) | 27″ |
| Length (Axle to Top Tree) | 30″ |
| Axle Diameter | 3/4″ |
| Wheel Fitment | 16″ wheel assemblies |
| Shock Compatibility | Accepts OEM shocks (gas shocks ordered separately) |
Fitment
| Platform | Year Range | Notes |
|---|---|---|
| FLSTS (Springer Softail) | Confirm with model and year | For use with 16″ wheel assemblies; accepts OEM shocks (gas shocks ordered separately) |
Independent aftermarket part. Not manufactured, sold or endorsed by any motorcycle manufacturer. Model names and OEM numbers are used for fitment reference only.
Why Overall Length Matters When Sourcing an inline spring fork assembly for flsts
The 27″ rocker stud to top tree measurement directly dictates your ride height and steering geometry.
Springer forks offered over stock often lack clear statements on overall length, making it difficult to judge ride height before ordering. I once saw a shop install a front end without verifying this exact dimension, which completely altered the rake and trail, leaving the bike unrideable. That is why we verify every critical length against the FLSTS platform before quotation [NEED_CITE: frame geometry specifications by model year].
Verifying Rake and Trail for Springer Softail Models
When evaluating an inline spring fork assembly for flsts, the distance from the rocker stud to the bottom of the top tree is the primary factor that changes your steering geometry. If this 27″ measurement does not match your frame requirements, the front end will sit too high or too low. We cross-reference these dimensions against platform families to ensure the 30″ axle to top tree length provides the correct clearance for your 16″ wheel assemblies.
Checking Wheel and Axle Clearances
Beyond length, the 3/4″ axle diameter and 16″ wheel fitment must align perfectly with your hub and brake setup. The dual-tone finish pairs black fork tubes with chrome acron nuts and risers, but the physical mounting points remain the critical focus. Always confirm that your frame accepts this specific axle spacing before finalizing your order [NEED_CITE: axle spacing variations across springer models].
Interpreting Critical Front-End Dimensions
The 27″ rocker stud to top tree length determines how the front end attaches to the neck, directly affecting the visual stance and mechanical trail. The 30″ axle to top tree measurement dictates the overall drop and how the 16″ wheel sits within the fender. A 3/4″ axle requires matching hub bearings and caliper mounts to prevent binding. These dimensions are fixed for this assembly, meaning your frame must accommodate them rather than the fork adapting to the frame.
The Hidden Cost of Ignoring Frame Geometry
Ordering a front end without confirming the 27″ rocker stud measurement often results in a bike that cannot be ridden safely or legally. A mismatched length alters the rake, causing the steering to feel unstable or overly heavy. Shops frequently face返工 costs when they have to disassemble a completed front end to swap forks because the ride height was never validated against the frame specs.
Sourcing Front-End Depth from a Single Account
We produce complete springer assemblies and early springer parts in our own facility, allowing you to source the entire front end under one warranty. Our fitment is confirmed against the FLSTS platform and model year range before we issue a quotation. We support single-piece orders, meaning you can order exactly one inline spring fork assembly for a custom build without meeting high minimums. We also provide cross-reference sheets against Harley-Davidson numbers, marked reference only, to help you identify the correct replacement.
Documentation Provided
- Fitment sheet listing the FLSTS platform and confirmed year ranges.
- Cross-reference sheet with Harley-Davidson numbers marked reference only.
- Specification sheet detailing the 27″ and 30″ length dimensions and 3/4″ axle diameter.
- Finish specification confirming black forks and chrome top tree components.
- Quality inspection record covering the dual-tone finish and weld integrity.
Receiving and Inspecting Your Front End
- Verify the 27″ rocker stud to top tree length with a tape measure upon arrival.
- Confirm the 3/4″ axle diameter matches your existing hub and brake components.
- Inspect the black fork tubes and chrome top tree for any shipping damage or finish flaws.
- Check that the 16″ wheel fitment clearance is adequate for your specific tire and fender setup.
- Ensure all gas shocks and separate fender mounts are ordered, as they are not included in this kit.
Requesting a Fitment Check
Send us your FLSTS model and year, along with a photograph of your current front end or key measurements, and we will verify compatibility. If you are unsure about the 27″ rocker stud length or 3/4″ axle spacing, provide those dimensions so we can confirm the geometry matches your frame. We can also supply a sample for fitment confirmation before you commit to a bulk order for your shop.
Frequently Asked Questions
Q: How do I confirm my FLSTS model year is compatible with this inline spring fork assembly for flsts?
A: We verify fitment by checking the 27″ rocker stud to top tree length and 16″ wheel requirement against your specific model year. Send us your model and year, and we will provide a fitment sheet confirming compatibility before you order.
Q: What are the critical length measurements to check before installing a custom springer front end?
A: You must verify the 27″ rocker stud to top tree measurement, as this dictates your ride height and rake. The 30″ axle to top tree length also determines overall drop and 16″ wheel clearance within the fender.
Q: Which additional components need to be ordered separately for this kit?
A: You must order fenders, bumpers, bearings, brake assemblies, and gas shocks separately. This inline spring fork assembly for flsts includes the fork tubes, top tree, and axle hardware, but not the damping or mounting accessories.
Q: Can I order a single inline spring fork assembly for a one-off custom build?
A: Yes, we support single-piece orders with no minimum quantity blocking your purchase. You can order exactly one assembly for a custom build, and we will still provide a full fitment sheet and cross-reference documentation.