Sample Inline Spring Fork Assembly Chrome 27″ – Fits FXSTS
Single-Piece Fitment Verification — We supply pre-production samples for exact dimension checks before you commit to a bulk build.
Product Specification
| Parameter | Value |
|---|---|
| Part Type | Inline Spring Fork Assembly |
| Finish | All chrome |
| Length | Stock length; 27″ from rocker stud to bottom of the top tree; 30″ from axle to bottom of top tree |
| Wheel Compatibility | 21″ wheel assemblies |
| Kit Contents | Shocks, axle riser, top tree, brake arm, rockers and bearings all assembled |
| Condition | Pre-production sample with cosmetic imperfections only; no physical defects such as cracks or holes; may show marks from installation test and fitment |
Fitment
| Platform | Year Range | Notes |
|---|---|---|
| FXSTS | Confirm with model and year | For use with 21″ wheel assemblies |
Independent aftermarket part. Not manufactured, sold or endorsed by any motorcycle manufacturer. Model names and OEM numbers are used for fitment reference only.
Verifying Stock Length on an Inline Spring Fork Assembly for FXSTS
Exact rocker stud measurements prevent front-end stacking errors.
Builders often struggle when springer forks are offered over stock without clear overall length statements. I still remember a shop ordering an inline spring fork assembly for FXSTS without checking the 27-inch measurement from the rocker stud to the bottom of the top tree. They assumed it would drop right in, but when mocked up, the front end sat way too high and the fender rubbed the tire [NEED_CITE: frame geometry specifications by model year]. Confirming these critical front-end dimensions before confirming any springer fork order saves the bike from sitting on a lift.

Checking Rocker Stud to Top Tree Dimensions
When evaluating an inline spring fork assembly for FXSTS, the distance from the rocker stud to the bottom of the top tree dictates your final ride height. This specific unit measures exactly 27 inches at that point. If your frame requires a different stance, this stock length will alter your steering geometry and trail. Always measure your current frame spacing before ordering to ensure the front end drops in without requiring modified risers or altered triple trees.
Axle to Top Tree Measurement Impact
The secondary critical measurement on this assembly is 30 inches from the axle to the bottom of the top tree. This dimension directly affects how the front wheel sits within the fender and how the brake components align with the axle. An incorrect axle-to-tree length will cause the fender to rub or the brake arm to bind. Verifying this 30-inch span against your specific build requirements ensures the front-end geometry remains true to the intended FXSTS platform stance [NEED_CITE: front-end geometry changes across custom build variations].
Interpreting the All Chrome Finish and Sample Condition
This inline spring fork assembly for FXSTS features an all chrome finish applied to the complete assembly, including the shocks, axle riser, top tree, brake arm, rockers, and bearings. Because this unit is a pre-production sample, it may show minor cosmetic imperfections or marks from installation testing. There are no physical defects such as cracks or holes. The chrome plating provides a baseline for visual inspection, but you must check threaded and bearing holes for excess plating before installation to ensure proper hardware seating.

The Hidden Cost of Ignoring Front-End Dimensions
Ordering a front end without verifying the rocker stud length often leads to costly delays. When the overall length is wrong, the bike cannot be safely rolled out of the shop, let alone ridden. You end up paying for return shipping, waiting for a replacement, and losing days of build time. Furthermore, if the kit contents are missing a specific axle riser or brake arm, the entire assembly is unusable until the missing hardware is sourced. These compounding errors stall custom builds and damage shop reputations [NEED_CITE: shop downtime costs related to incorrect front-end fitment].
Sourcing a Single Sample for Custom Builds
We support custom builders by offering a minimum order from one piece, allowing you to procure this pre-production sample for fitment confirmation before placing a bulk order. Our front-end depth means complete springer assemblies and multiple over-stock lengths are available in one catalogue. We confirm fitment against the platform family and model year range before quotation, ensuring this inline spring fork assembly for FXSTS matches your specific 21-inch wheel requirement. Every unit is checked for key dimensions and finish specification prior to dispatch.
Documentation and Fitment Records
- Fitment sheet listing the FXSTS platform and applicable year ranges checked against
- Key dimensions sheet detailing the 27-inch rocker stud and 30-inch axle measurements
- Finish specification document outlining the all chrome plating process and sample condition
- Quality inspection record noting the absence of physical defects like cracks or holes
- Packing photographs showing the assembled shocks, top tree, and hardware before dispatch
Receiving and Inspecting the Assembly
- Verify the kit contents include shocks, axle riser, top tree, brake arm, rockers, and bearings.
- Measure the 27-inch rocker stud to top tree distance to confirm stock length for your frame.
- Inspect the all chrome finish for cosmetic imperfections typical of a pre-production sample.
- Check threaded and bearing holes for excess plating that could prevent hardware installation.
- Confirm the assembly is strictly intended for use with 21-inch wheel assemblies.
- Store the unit in a dry environment to prevent surface corrosion before final installation.
Requesting a Fitment Check
Send your model and year for a fitment check to ensure this inline spring fork assembly for FXSTS matches your build. Provide your current rocker stud to top tree measurements and confirm your 21-inch wheel compatibility. Let us know if you require this pre-production sample for physical testing before committing to a larger production run.
Frequently Asked Questions
Q: How do I confirm if this inline spring fork assembly for FXSTS fits my specific model year?
A: You must verify the 27-inch rocker stud to top tree measurement and the 30-inch axle to top tree measurement against your frame geometry. We also require your specific model year to cross-reference the fitment sheet and ensure compatibility with your 21-inch wheel assembly setup before finalizing the order.
Q: What exact dimensions should I measure to verify stock length and frame compatibility?
A: Measure from the center of the rocker stud to the bottom of the top tree, which must match the 27-inch specification. Additionally, measure from the axle center to the bottom of the top tree to confirm the 30-inch length. These two dimensions dictate your ride height and fender clearance.
Q: What cosmetic imperfections should I expect on this pre-production sample part?
A: As a pre-production sample, the all chrome finish may show minor marks from installation testing and fitment checks. However, there are no physical defects such as cracks or holes. You should also check threaded and bearing holes for excess plating before installing any hardware.
Q: Does the assembly include all necessary hardware like shocks and the top tree?
A: Yes, this inline spring fork assembly for FXSTS is supplied fully assembled. The kit contents include shocks, an axle riser, the top tree, a brake arm, rockers, and bearings. All components are included to ensure the front end is ready for mock-up and dimension verification upon arrival.
Q: Can I order a single sample piece to test fitment before placing a bulk order?
A: Yes, we support a minimum order from one piece. You can order this pre-production sample to physically verify the 27-inch and 30-inch dimensions on your FXSTS frame. Once fitment is confirmed and you are satisfied with the assembly, you can proceed with a bulk order for your production run.