Black Inline Spring Fork Kit 20″ – Fits Custom Springer
Own Springer Production — Direct manufacturing of front-end assemblies ensures exact rocker offsets and triple tree spacing for custom brake setups.
Product Specification
Part Type | Inline Spring Fork Kit
| Parameter | Value |
|---|---|
| Finish | Black (fork body), Chrome (springs and top triple tree) |
| Length | 20″ |
| Triple Tree Design | Machined chrome design without ears |
| Riser Compatibility | Post risers with stud to top of rear fork legs |
| Leg Thread | 1/2″ x 20 |
| Axle Assembly | 3/4″ included |
| Rocker Offset | Right rocker is not offset |
| Brake Tab Location | Right side |
| Bearing Kit | 1″ taper bearing kit available separately |
Fitment
| Platform | Year Range | Notes |
|---|---|---|
| Custom springer front end applications | Confirm with model and year | Fits custom brake and spool wheel setups; right rocker is not offset; brake tab located on the right side. |
Independent aftermarket part. Not manufactured, sold or endorsed by any motorcycle manufacturer. Model names and OEM numbers are used for fitment reference only.
Verifying Rocker Offset for Custom Brake Setups
A non-offset right rocker is mandatory for specific spool wheel alignments.
When sourcing a 20″ inline spring fork kit, builders often assume standard offset rockers will clear a custom brake setup. I have seen kits arrive with offset rockers, causing the spool wheel to sit completely off-center and the brake tab to miss the caliper mount entirely. Verifying the rocker offset and brake tab location against your exact wheel and brake configuration prevents these geometry mismatches before the parts reach the lift [NEED_CITE: frame geometry and brake caliper alignment requirements for custom springer builds].
Checking Triple Tree and Riser Mounting Dimensions
The machined chrome top triple tree on this 20″ inline spring fork kit is designed without ears, which changes how your handlebars mount. You must use post risers with a stud mounting directly to the top of the rear fork legs. Confirming the leg thread pitch of 1/2″ x 20 against your chosen risers ensures the steering stem can be properly secured without cross-threading or bottoming out.
Matching Steering Stem Bearings to Your Frame
This fork requires a 1″ taper bearing kit, which is available separately. Frame neck bearing sizes vary significantly between early and late custom frames, and ordering a fork without confirming the steering stem diameter is a common oversight. Always measure your frame’s steering neck or verify the bearing kit requirement against your specific frame build to avoid receiving a fork that cannot be mounted [NEED_CITE: steering head cup and neck bearing size variations across custom frame generations].
Hidden Costs of Incorrect Axle Spacing
The included 3/4″ axle assembly requires specific spacers to center the wheel. If the axle spacing is not measured and matched to your custom hub width, the wheel will bind against the fork legs or sit skewed. This forces a complete teardown to source or machine new spacers, delaying the build and risking damage to the black fork finish during repeated disassembly [NEED_CITE: axle spacer requirements and wheel centering tolerances for custom spool wheels].
Sourcing Front-End Depth from a Single Account
We produce complete springer assemblies and multiple over-stock lengths in our own facility, ensuring the black fork finish and chrome springs maintain consistency across batches. You can order a single 20″ inline spring fork kit for a one-off custom build without facing minimum order blocks. Every kit is checked against your build requirements, and cross-references against Harley-Davidson OEM numbers are provided for identification purposes only.
Documentation Provided with Your Shipment
- Fitment sheet listing the custom springer applications this kit was checked against
- Key dimensions sheet detailing the 20″ length, 3/4″ axle size, and 1/2″ x 20 leg thread
- Finish specification confirming the black fork body and chrome spring details
- Cross-reference sheet with OEM numbers marked reference only for identification
- Quality inspection record verifying the non-offset right rocker and right-side brake tab
- Packing photographs showing the machined chrome triple tree without ears
Receiving and Pre-Installation Checks
- Verify the 20″ overall length and black finish on the fork body match your build plan.
- Confirm the right rocker is not offset and the brake tab is on the right side.
- Measure the 1/2″ x 20 leg threads to ensure compatibility with your post risers.
- Check that the 3/4″ axle assembly is included and calculate required spacers for your hub.
- Inspect the machined chrome top triple tree without ears for any transit damage.
- Store the 1″ taper bearing kit in a dry environment until the frame neck is ready.
Requesting a Fitment Check for Your Build
Send your custom frame geometry details and the exact brake and spool wheel setup you are using. Provide photos of your current steering neck or the required 1″ taper bearing dimensions if the frame is unfinished. Let us know if you need a sample of the 20″ inline spring fork kit to verify the triple tree spacing and rocker offset before committing to the final order.
Frequently Asked Questions
Q: How do I confirm if this 20″ inline spring fork fits my custom frame geometry?
A: You need to verify the frame’s steering neck diameter to ensure it accepts the separate 1″ taper bearing kit. Additionally, check the frame’s triple tree mounting spacing to confirm it matches the machined chrome top triple tree design without ears. Providing your frame measurements allows us to verify the fitment before dispatch.
Q: What steering neck bearing size is required if the 1″ taper bearing kit is sold separately?
A: This specific 20″ inline spring fork kit requires a 1″ taper bearing kit. Because frame neck bearing sizes differ across custom builds, you must measure your frame’s steering stem or consult your frame builder to confirm it accepts a 1″ taper setup before ordering the fork assembly.
Q: How do I determine the correct axle spacers to center the wheel on this fork?
A: Measure the width of your custom spool wheel hub and subtract the 3/4″ axle assembly width. The difference dictates the spacer thickness needed on each side. Proper spacing ensures the wheel sits centered between the fork legs and the right-side brake tab aligns with the caliper.
Q: Can I order a single inline spring fork kit for a one-off custom build?
A: Yes, we support custom builders assembling a single bike with a minimum order of one piece. You can order this 20″ inline spring fork kit individually, and we will still provide the fitment sheet and key dimensions to ensure the non-offset right rocker matches your specific brake setup.