Black 20″ Inline Spring Fork Kit – Fits Custom Builds
Front-End Depth in One Catalogue — This 20″ inline spring fork kit is part of a comprehensive front-end range covering complete assemblies, multiple over-stock lengths, and early springer parts under a single account.
Product Specification
Part Type | Inline Spring Fork Kit
| Parameter | Value |
|---|---|
| Part Type | Inline Spring Fork Kit |
| Finish | Black with chrome springs and machined chrome top triple tree |
| Length | 20″ |
| Leg Thread | 1/2″ x 20 |
| Axle Assembly | 3/4″ (included) |
| Bearing Kit | 1″ taper (available separately) |
| Brake Tab Location | Right |
| Rocker Design | Right rocker is not offset |
Fitment
| Platform | Year Range | Notes |
|---|---|---|
| Custom builds | Confirm with model and year | Verify frame geometry, axle spacing, and wheel setup before ordering. |
Independent aftermarket part. Not manufactured, sold or endorsed by any motorcycle manufacturer. Model names and OEM numbers are used for fitment reference only.
Why Over-Stock Springer Lengths Cause Wheel Alignment Issues
A 20″ inline spring fork kit changes ride height and requires exact axle spacing to center the wheel.
Builders often order over-stock springers without calculating the resulting trail and ride height changes. When the overall length increases, the stock axle spacing rarely matches the new fork leg distance. Without precise measurements, the wheel sits off-center, causing the brake caliper to misalign with the rotor and the fender to sit crooked. Verifying the exact frame geometry and required spacer thickness prevents these assembly delays [NEED_CITE: frame geometry calculations for over-stock front ends].
Verifying Frame Geometry for a 20″ Setup
Installing a 20″ inline spring fork kit alters the steering head angle and front ride height. You must measure the distance between the triple tree mounting points and the desired axle centerline. If the frame was built for a different length, the fork legs will not align with the steering stem. Checking these dimensions ensures the front end tracks straight and maintains the intended stance.
Matching Rocker Offset and Brake Tabs
The right rocker on this kit is not offset, and the brake tab is located on the right side. This configuration is critical for builds using specific spool wheels and right-side brake calipers. If your custom wheel requires a different brake tab location or a specific rocker offset to clear the spokes, this setup will not work. Always confirm the wheel configuration matches the rocker design before finalizing the order [NEED_CITE: rocker offset variations for custom wheel builds].
Understanding the 3/4″ Axle and 1/2″ x 20 Leg Thread
The included 3/4″ axle assembly requires specific spacers to center the wheel between the 20″ fork legs. The 1/2″ x 20 leg thread dictates the type of axle adjusters and hardware you must use. If your custom hub uses a different axle diameter, you will need to machine or source alternative spacers. The 1″ taper bearing kit is available separately, so verify your steering stem dimensions to ensure the correct bearing fitment.
The Hidden Cost of Incorrect Rocker Styles
Ordering a springer without confirming the rocker offset often leaves the bike stranded on the lift. A non-offset right rocker paired with a wheel designed for an offset setup will cause the brake rotor to bind against the caliper bracket. Fixing this requires disassembling the front end, sourcing a different rocker, and potentially re-plating parts if the finish is damaged during removal. Verifying the rocker style against the wheel design saves hours of rework and prevents finish mismatches [NEED_CITE: rocker offset compatibility with custom wheel spacing].
Sourcing Front-End Parts with Fitment Certainty
We confirm fitment against your specific platform and year range before providing a quotation. Our catalogue offers multiple over-stock lengths, allowing you to choose the exact 20″ inline spring fork kit that matches your frame geometry. We cross-reference OEM numbers for identification, marked reference only, to ensure you get the correct replacement. You can order a single piece for a custom build or request a sample to verify fitment before placing a bulk order.
Documentation Provided
- Fitment sheet stating applicable platforms and confirmed year ranges
- Cross-reference sheet with OEM numbers marked reference only
- Key dimensions including 20″ overall length and 3/4″ axle assembly details
- Finish specification for black legs with chrome springs and triple tree
- Quality inspection record covering threaded holes and bearing surfaces
Receiving and Pre-Installation Checks
- Verify the 20″ overall length and right-side brake tab location match your build plan
- Check the 1/2″ x 20 leg threads and bearing holes for excess plating before assembly
- Confirm the included 3/4″ axle assembly and calculate required spacers for wheel centering
- Inspect the black finish and chrome springs for any shipping damage or cosmetic defects
- Ensure the 1″ taper bearing kit is ordered separately if your steering stem requires it
Send Your Details for a Fitment Check
Provide your custom frame model, year, and exact wheel setup to verify if this 20″ inline spring fork kit is the correct choice. Include photos of your current steering stem, brake caliper, and wheel spacing to help us confirm the rocker offset and brake tab location. Let us know if you need a sample for a test fit before committing to a bulk purchase.
Frequently Asked Questions
Q: How do I confirm if this 20″ spring fork kit fits my custom frame?
A: Measure the distance between your triple tree mounting points and your desired axle centerline. Verify that the 20″ overall length matches your frame geometry. Check the right-side brake tab location and ensure the non-offset right rocker matches your wheel and brake caliper setup.
Q: What key dimensions should I measure before ordering an over-stock springer?
A: Measure the steering stem spacing, the distance from the triple tree to the axle, and the width of your custom wheel hub. You must also check the brake rotor alignment and confirm the required axle diameter to calculate the correct spacer thickness for the 3/4″ axle assembly.
Q: Does the kit include the 1″ taper bearing kit or axle spacers?
A: The 1″ taper bearing kit is available separately and is not included in this fork kit. The kit includes the 3/4″ axle assembly, but you must source or machine the specific axle spacers required to center your custom wheel between the fork legs.
Q: Can I order a single sample to test fitment before a bulk order?
A: Yes, we support a minimum order of one piece. You can order a single 20″ inline spring fork kit to verify the frame geometry, rocker offset, and brake tab location on your custom build before placing a larger order for multiple units.
Q: What should I check on the threads before installing the fork legs?
A: Carefully inspect the 1/2″ x 20 leg threads and the steering head bearing holes for any excess plating. Excess chrome in these areas can prevent axle adjusters and bearings from seating properly, so clean the threads and holes before assembly to ensure a precise fit.