Sample Fork Slider Assembly 39mm Single Disc – Fits Custom Springer
In-house Springer Production — Every 39mm fork slider assembly for custom springers is manufactured in our own facility to ensure exact tube diameter and slider spacing match your triple tree specifications.
Product Specification
| Parameter | Value |
|---|---|
| Part Type | Fork Slider Assembly |
| Diameter | 39mm |
| Finish | Hard chrome fork tubes, chrome sliders |
| Side | Left and right assembly |
| Quantity | Set of two |
| Kit Contents | Fork tubes, sliders with springs and all internal components installed |
| Condition | Pre-production sample parts with cosmetic imperfections in finished surface, no physical defects such as cracks or holes, may show marks from installation test and fitment |
Fitment
| Platform | Year Range | Notes |
|---|---|---|
| Not stated | Not stated | For single disc application |
Independent aftermarket part. Not manufactured, sold or endorsed by any motorcycle manufacturer. Model names and OEM numbers are used for fitment reference only.
Verifying Triple Tree Spacing for Single Disc Builds
Confirming the 39mm tube diameter and slider mounting points prevents front-end teardowns.
When building a custom front end, receiving a 39mm fork slider assembly for custom springers without clear dimensional data leaves you guessing if it will align with your specific triple trees. We have seen custom builders order slider sets only to discover the axle alignment shifts because the slider spacing was not verified against the tree width first. This mismatch forces the entire assembly to be torn down and re-sourced, delaying the build schedule significantly [NEED_CITE: frame geometry and triple tree spacing variations across custom builds].
Checking Slider Spacing Against Triple Trees
Before ordering a 39mm fork slider assembly for custom springers, you must verify the exact slider spacing against your triple tree width. Custom springer builds often use modified trees, and even a slight deviation in the 39mm tube diameter or slider mount placement will prevent the axle from lining up correctly. We recommend measuring the distance between the lower tree ears and comparing it directly to the slider mounting points to ensure a direct fit without binding.
Confirming Single Disc Mounting Points
This 39mm fork slider assembly for custom springers is specifically configured for single disc brake applications. The caliper mounting tabs and axle alignment are machined differently than dual disc setups. If your custom build requires a dual disc configuration, these sliders will not accommodate the second caliper bracket, and attempting to modify them can compromise the structural integrity of the chrome sliders [NEED_CITE: brake caliper mounting configurations for custom springer front ends].
Interpreting the 39mm Diameter and Finish Specs
The 39mm diameter is a critical dimension that dictates which fork boots, seals, and triple tree clamps will physically accept the tubes. A mismatch here means the clamps will either pinch the tubes or fail to hold them securely. The hard chrome fork tubes paired with chrome sliders provide a consistent finish across the assembly. However, because these are pre-production sample parts, you should expect cosmetic imperfections in the finished surface, though there are no physical defects like cracks or holes.
The Hidden Cost of Unverified Sample Conditions
Ordering pre-production sample parts without understanding their exact condition can lead to unexpected rework. These sample parts may show marks from installation tests and fitment checks, and threaded or bearing holes might have excess plating. If you do not check these holes for excess plating before installation, the bearings may not seat properly, leading to steering notchiness or premature wear that requires disassembling the entire front end to correct [NEED_CITE: steering head bearing seating and plating interference issues].
Sourcing Directly from the Manufacturer
We produce front-end and chassis parts in our own facility, meaning this 39mm fork slider assembly for custom springers is built under one account and one warranty. Our front-end depth allows us to supply complete assemblies, multiple over-stock lengths, and early springer parts from a single catalogue. We offer chrome and black finish options on main front-end lines, and we support a minimum order from one piece, allowing shops to order a single set for a custom build without meeting high volume thresholds.
Documentation Provided
- Fitment sheet stating applicable platforms and year ranges confirmed before quotation
- Key dimensions including 39mm fork diameter and assembly side clearly documented
- Finish specification detailing hard chrome fork tubes and chrome sliders
- Quality inspection record noting cosmetic imperfections and condition of sample parts
- Cross-reference sheet with OEM numbers marked reference only where applicable
Receiving and Pre-Installation Checks
- Verify the set of two includes fork tubes, sliders with springs, and all internal components installed
- Confirm the 39mm diameter matches your triple tree clamps and bracket spacing
- Inspect the hard chrome finish for cosmetic imperfections typical of pre-production sample parts
- Check threaded and bearing holes for excess plating before installation to ensure proper seating
- Have the assembly installed by a qualified technician familiar with custom springer front ends
Requesting a Fitment Check
Send your model and year for a fitment check to ensure this 39mm fork slider assembly for custom springers matches your build. Provide your triple tree spacing measurements, confirm your single disc brake requirement, and specify if you need a sample set for physical verification before committing to a bulk order.
Frequently Asked Questions
Q: How do I confirm if the 39mm diameter fits my custom springer triple trees?
A: Measure the distance between the lower tree ears and compare it to the slider mounting points on the assembly. The 39mm tube diameter must also match your fork boots and clamp sizes to ensure a secure fit without binding or pinching the tubes.
Q: What internal components are included in the pre-installed slider assembly?
A: The kit includes the fork tubes and sliders, with the springs and all internal components already installed inside the sliders. This provides a complete left and right set of two, ready for final assembly onto your triple trees.
Q: What kind of cosmetic imperfections should I expect on these pre-production sample parts?
A: As pre-production samples, the hard chrome fork tubes and chrome sliders may show marks from installation tests and fitment checks. There are no physical defects such as cracks or holes, but the finished surface will not be flawless like final production units.
Q: Can I order a single set of two for a custom build without a minimum order quantity?
A: Yes, we support a minimum order from one piece. You can order a single set of two for your custom build to verify fitment and finish quality before deciding whether to place a larger bulk order for your shop or inventory.
Q: How do I check for excess plating in the threaded and bearing holes before installation?
A: Visually inspect the threaded holes and bearing races for any buildup of chrome. Use a tap or appropriate tool to carefully clean out the threads, and ensure the bearing seats are smooth so the components can seat fully without interference.