Black Inline Spring Fork Assembly Stock Length – Fits FXSTS Springer Softail
In-house springer production — Every inline spring fork assembly for fxsts is measured from rocker stud to top tree before leaving the bench, ensuring exact stock-length geometry for your frame.
Product Specification
| Parameter | Value |
|---|---|
| Part Type | Inline Spring Fork Assembly |
| Finish | All black finish with chrome rockers, spring, and brake caliper brackets |
| Length | Stock length |
| Neck Bearing Size | 1″ |
| Length (Rocker stud to top tree) | 27″ |
| Length (Axle to top tree) | 30″ |
| Kit Contents | Rockers, chrome spring, brake caliper brackets, 1″ neck bearings, dust cover, top tree, shock, brake arm, axle, and bearings (all assembled) |
Fitment
| Platform | Year Range | Notes |
|---|---|---|
| FXSTS Springer Softail | Confirm with model and year | Verify 1″ neck bearing size and 27″ rocker stud length against your specific frame year. |
Independent aftermarket part. Not manufactured, sold or endorsed by any motorcycle manufacturer. Model names and OEM numbers are used for fitment reference only.
Why Exact Stock-Length Dimensions Matter for Your Build
This inline spring fork assembly for fxsts provides exact 27-inch and 30-inch measurements to maintain original ride height and steering geometry.
Springer forks offered without clear overall length statements leave builders guessing about ride height and steering geometry. I still remember a FXSTS springer fork assembly return where the buyer just saw the black finish and assumed it was a direct drop-in. They never checked the 27-inch measurement from the rocker stud to the bottom of the top tree, nor the 30-inch axle distance. When it bolted up, the ride height was completely off and the steering geometry felt wrong. Now, I always verify those exact dimensions against the frame before any assembly leaves the bench [NEED_CITE: factory service manual specifications by model year for springer front ends].
Verifying Frame Mounting Points Before Ordering
Confirming the 27-inch rocker stud to top tree length and 30-inch axle to top tree length is critical for this inline spring fork assembly for fxsts. These specific measurements dictate how the front end aligns with your frame’s springer mounting points. If the axle distance is even slightly off, the wheel will not center correctly within the fender, and the brake caliper brackets will not align with the rotor. Always measure your existing setup or consult your frame specifications to ensure these stock-length dimensions match your intended ride height.
Matching the Steering Stem and Neck Bearings
The 1″ neck bearing size included in this kit must match your FXSTS Springer Softail steering stem exactly. A mismatch in neck bearing size will prevent the top tree from seating properly, leading to steering binding or dangerous looseness. We cross-reference against Harley-Davidson OEM numbers, marked reference only, to help you identify the correct steering stem diameter for your specific model year [NEED_CITE: steering stem diameter variations across FXSTS model years]. Check that the stock length matches your intended fender clearance before finalizing your order.
The Hidden Cost of Incorrect Front-End Fitment
Ordering a front end without verifying exact dimensions often leads to severe build delays. When a springer fork is too long or too short, the bike’s rake and trail are altered, changing how the motorcycle handles and potentially causing the front tire to rub against the frame or fender. Furthermore, if the neck bearing size is wrong, the entire assembly must be disassembled, and new bearings sourced, wasting valuable shop time. We have seen parts from the same family shipped to the wrong frame year because the buyer relied on an incomplete fitment chart rather than measuring the actual frame [NEED_CITE: common fitment errors when replacing springer front ends on softail models].
Sourcing Reliable Aftermarket Front Ends
We manufacture our own springer front ends and chassis hardware, allowing us to control the quality of the black and chrome finishes across batches. This inline spring fork assembly for fxsts is fully assembled and inspected before shipment, ensuring all components like the shock, brake arm, and axle are included and functional. We offer a minimum order from one piece, supporting single-bike custom builds without forcing large inventory purchases. Every order is backed by a fitment sheet confirming the applicable platforms and year ranges before quotation.
Documentation and Quality Records
- Fitment sheet listing the FXSTS Springer Softail platform and applicable year ranges
- Key dimensions document verifying the 27-inch and 30-inch lengths and 1-inch neck bearing size
- Finish specification detailing the all-black body with chrome rockers, spring, and brackets
- Quality inspection record confirming the fully assembled kit contents and function
- Cross-reference sheet with Harley-Davidson OEM numbers marked reference only
- Warranty terms and packing photographs for your receiving records
Receiving and Pre-Installation Checks
- Verify the kit includes the top tree, shock, brake arm, axle, and 1-inch neck bearings upon arrival.
- Confirm the all-black finish with chrome accents matches your order and is free from shipping damage.
- Measure the 27-inch rocker stud to top tree length to ensure it matches your frame requirements.
- Check the 30-inch axle to top tree length to verify correct wheel alignment and fender clearance.
- Ensure the 1-inch neck bearings fit smoothly onto your steering stem without force.
- Store the assembly in a dry environment to prevent surface corrosion before installation.
Requesting a Fitment Check and Sample
Send your model and year for a fitment check to confirm this inline spring fork assembly for fxsts matches your build requirements. Provide your specific frame measurements, including neck bearing size and desired ride height, so we can verify the 27-inch and 30-inch dimensions against your setup. If you are building a custom bike or need to verify finish consistency, we can supply a single sample assembly for test fitting before you commit to a larger order.
Frequently Asked Questions
Q: How do I confirm my FXSTS Springer Softail model year fits this stock length assembly?
A: You must verify the 1-inch neck bearing size matches your steering stem and measure your frame to ensure the 27-inch rocker stud to top tree length and 30-inch axle to top tree length align with your mounting points. We provide a fitment sheet confirming compatibility before quotation.
Q: What exact measurements should I check on my frame before ordering this inline spring fork?
A: Measure the distance from the rocker stud to the bottom of the top tree, which must be 27 inches, and the distance from the axle to the bottom of the top tree, which must be 30 inches. Also, verify your steering stem requires a 1-inch neck bearing.
Q: Which specific components are included in the fully assembled spring fork kit?
A: The kit includes rockers, a chrome spring, brake caliper brackets, 1-inch neck bearings, a dust cover, top tree, shock, brake arm, axle, and bearings. Everything is fully assembled and ready for fitment verification against your specific frame.
Q: Can I order a single sample assembly to test fitment before buying in bulk?
A: Yes, we support single-bike custom builds with a minimum order of one piece. You can order a single sample assembly to verify the black finish quality, check the 27-inch and 30-inch dimensions, and confirm fitment on your frame before placing a larger order.