Aftermarket Replacement Spring Fork Kit 28″ Black with Brass Accents
Finish Consistency Verified — Every batch of this 28″ spring fork kit for custom motorcycles is checked for uniform black and brass plating before it leaves the bench.
Product Specification
| Parameter | Value |
|---|---|
| Part Type | Spring Fork Kit |
| Finish | Black with brass plated rockers, springs, top tree and axle nuts |
| Length | 28″ |
| Thread | 3/4″-18 |
Fitment
| Platform | Year Range | Notes |
|---|---|---|
| Not stated in source | Not stated in source | Confirm with model and 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 Over-Stock Springer Lengths Cause Riser Mounting Failures
A 28″ overall length changes frame geometry and demands exact thread matching for post risers.
Custom builders often struggle with unclear overall lengths and mounting details on over-stock springer forks. When the rear fork legs lack the correct thread pitch, the build halts at the assembly stage. I remember prepping a 28-inch springer fork kit with brass accents where the black finish looked perfect, but the rear legs were drilled and tapped 3/4″-18. The customer needed a different thread pitch for his specific setup to mount the post risers. Catching this during sample trial fitting prevented a ruined build [NEED_CITE: frame geometry and rake changes with over-stock fork lengths].
Verifying Rake and Trail Impact for Custom Frames
When upgrading to a 28″ spring fork kit for custom motorcycles, the increased length directly alters the steering geometry. You must verify the 28″ length against your specific frame geometry to determine the exact rake and trail impact. Failing to calculate this shift can result in steering that feels sluggish or overly sensitive. Always measure the neck angle and compare it against the new fork length before committing to the final assembly.
Checking Post Riser Stud Compatibility
The rear fork legs on this kit are drilled and tapped 3/4″-18 specifically for mounting risers. You must confirm post riser stud compatibility with these tapped holes to ensure a secure fit. Using a riser with a different thread pitch will cross-thread the leg or leave the riser loose. This specific 3/4″-18 thread requires matching hardware to maintain structural integrity under riding loads [NEED_CITE: thread pitch variations across custom riser manufacturers].
Understanding the 28″ Length and Brass Plating Specs
The 28″ overall length places this spring fork kit for custom motorcycles firmly in the over-stock category, designed for stretched front-end profiles. The black finish is paired with brass plated rockers, springs, top tree and axle nuts to create a specific visual contrast. The 3/4″-18 thread on the rear legs dictates the exact riser hardware required. These dimensions define the ride height and the mechanical connection points for your handlebars.
The Hidden Cost of Unverified Thread Specifications
Ordering a front end without confirming the rear leg thread pitch often leads to wasted machining time or ruined components. If the 3/4″-18 tapped holes do not match your post risers, you cannot simply force the fitment. A mismatch forces the builder to either re-tap the legs, which weakens the metal, or scrap the kit entirely. Verifying these details during the sample stage ensures the parts align with your exact build requirements before bulk deployment [NEED_CITE: machining costs associated with incorrect thread pitches].
Sourcing from a Front-End Specialist
We manufacture our own springer front ends and chassis hardware, ensuring direct control over the 28″ length and 3/4″-18 thread specs. Our catalogue offers deep front-end coverage, allowing you to source complete assemblies and early springer parts under one account. We provide both black and brass plated finish options, checking every batch for visual consistency. You can order a single kit for a custom build without facing minimum order quantity blocks. Every fitment is confirmed against your platform and year range before quotation.
Documentation Provided
- Fitment sheet stating applicable platforms and year ranges for this spring fork kit
- Key dimensions including 28″ fork length and 3/4″-18 thread specifications
- Finish specification detailing the black and brass plated components
- Quality inspection record verifying thread pitch and plating consistency
- Packing photographs showing the brass plated rockers and top tree
Receiving and Pre-Installation Checks
- Verify the 28″ overall length against your frame measurements before assembly.
- Check the 3/4″-18 tapped holes on the rear fork legs with a test stud.
- Inspect the black finish and brass plated rockers for any shipping damage.
- Ensure the top tree and axle nuts match the brass plated visual specification.
- Have a qualified technician inspect all structural mounting points before riding.
- Store the kit in a dry environment to protect the brass plating and black finish.
Requesting a Fitment Check
Send your model and year for a fitment check to confirm this 28″ spring fork kit for custom motorcycles matches your frame geometry. Provide your required finish details and quantity to ensure we allocate the correct batch. Let us know if you need a sample supply for trial fitting the 3/4″-18 riser mounts before placing a bulk order.
Frequently Asked Questions
Q: How do I confirm if this 28″ spring fork kit fits my custom frame geometry?
A: You must measure your frame neck angle and compare it against the 28″ overall length to calculate the resulting rake and trail. We provide a fitment sheet detailing key dimensions to help you verify the geometry shift before assembly. Always check the frame clearance to ensure the longer length does not interfere with the tank or engine.
Q: What is the impact of a 28″ fork on rake and trail?
A: A 28″ over-stock length increases the front-end profile, which typically increases rake and trail. This changes the steering geometry, making the front end feel different from a stock setup. You must calculate these changes based on your specific frame to ensure the handling meets your custom build requirements.
Q: Are the post risers included in this spring fork kit?
A: The kit includes the fork assembly with rear legs drilled and tapped 3/4″-18 for mounting risers. The post risers themselves are not included and must be sourced separately. You need to ensure your chosen risers feature studs that match the 3/4″-18 thread pitch on the rear fork legs.
Q: Can I order a single kit for a custom build without a minimum order quantity?
A: Yes, we support a minimum order of one piece for shops building a single custom motorcycle. You can order a single 28″ spring fork kit to complete your project without being forced to buy in bulk. We also offer sample supply for fitment confirmation if you need to test the 3/4″-18 threads before finalizing the build.
Q: How consistent is the black and brass plated finish across different batches?
A: We check every batch for visual consistency between the black finish and the brass plated rockers, springs, top tree and axle nuts. Because we control the front-end production, we verify the plating quality before the kit leaves the bench. This ensures that side-by-side components match perfectly without noticeable batch variations.