Aftermarket Replacement Stem Nut Cover for FXWG FXST
Platform and year range verified — Every stem nut cover is checked against the FXWG and FXST 1980-later fitment sheet before quotation to prevent thread mismatch.
Product Specification
| Parameter | Value |
|---|---|
| OEM Reference | 45670-80 (reference only) |
| Part Type | Stem Nut Cover |
| Finish | Chrome Plated |
| Thread | 1/4-20 Stud |
Fitment
| Platform | Year Range | Notes |
|---|---|---|
| FXWG, FXST | 1980-later | with 1/4-20 Stud |
Independent aftermarket part. Not manufactured, sold or endorsed by any motorcycle manufacturer. Model names and OEM numbers are used for fitment reference only.
Avoiding Thread Mismatches When Sourcing a Stem Nut Cover for FXWG FXST
Matching the exact 1/4-20 stud thread and confirming the 1980-later year range is the only way to ensure the cover threads on correctly.
I have seen shops order covers based only on the model name, ignoring the specific year. The part arrives, but the older frame has a completely different thread pitch, leaving the hardware sitting on the bench for weeks. [NEED_CITE: thread pitch variations across frame generations for this platform]

Verifying the 1980-Later Year Range for FXWG and FXST
When sourcing a stem nut cover for fxwg fxst, the first step is confirming that your specific build falls within the 1980-later production window. Earlier frames utilized different stud sizes, and relying solely on the model name without the year range often leads to receiving incompatible hardware. Checking the exact year ensures the 1/4-20 stud thread aligns perfectly with your fork assembly.
Cross-Referencing 45670-80 for Accurate Identification
The OEM number 45670-80 serves as a reference point to identify the correct aftermarket replacement for your front end. Superseded part numbers can cause confusion when rebuilding older machines, making cross-reference sheets essential for accurate matching. Verifying this reference against your specific model year prevents ordering a cover that physically will not thread onto the stem. [NEED_CITE: part number supersessions across model years for this platform]
Understanding the 1/4-20 Stud Thread Specification
The 1/4-20 stud thread is a critical dimension that dictates whether the cover will seat properly on the steering stem nut. If the thread pitch or diameter is incorrect, the cover cannot be secured, leaving the stem exposed to debris and moisture. This specific thread requirement is standard for the 1980-later FXWG and FXST platforms, ensuring a precise mechanical fit. [NEED_CITE: steering stem thread specifications by model year]

The Hidden Cost of Incorrect Year Range Verification
Ordering front end hardware without confirming the exact year range often results in parts that do not fit, halting the build process. A stem nut cover with the wrong thread pitch will simply sit on the workbench, delaying the project and requiring a return. This mismatch forces the shop to wait for the correct part, extending the downtime for the customer’s motorcycle. [NEED_CITE: assembly delays caused by mismatched front end hardware]
Sourcing Front End Hardware with Fitment Certainty
We verify every stem nut cover against the FXWG and FXST 1980-later platform family before providing a quotation. Our process includes cross-referencing the 45670-80 number to ensure accurate identification for your specific build. We also confirm the 1/4-20 stud thread requirement and the chrome plated finish match your project needs. This approach ensures you receive the exact hardware required for your front end assembly.
Documentation Provided with Your Order
- Fitment sheet listing the 1980-later year range this part was checked against
- Cross-reference sheet with 45670-80 marked reference only
- Finish specification confirming the chrome plated surface
- Quality inspection record verifying the 1/4-20 stud thread
Receiving and Inspecting the Stem Nut Cover
- Verify the chrome plated finish matches the rest of your front end components upon arrival
- Check that the 1/4-20 stud thread is clean and undamaged before attempting installation
- Confirm the part matches the FXWG or FXST 1980-later fitment sheet included in the package
- Store the cover in a dry environment to maintain the chrome plated finish before use
Requesting a Fitment Check for Your Build
Send your FXWG or FXST model designation and the exact production year to verify fitment before ordering. Provide the OEM reference 45670-80 or a clear photograph of the existing stem nut to confirm the 1/4-20 stud thread requirement. Let us know if you need a single piece for a repair or a larger quantity for inventory.
Frequently Asked Questions
Q: How do I confirm my FXWG or FXST model year is compatible with this stem nut cover?
A: Check your frame documentation or the original build sheet to verify the production year falls within the 1980-later range. The 1/4-20 stud thread is specific to this year range, and earlier models require a different thread pitch. If you are unsure, provide the model and year for a fitment verification before ordering.
Q: What are the critical dimensions to measure for the 1/4-20 stud thread fitment?
A: You need to verify that the steering stem nut on your fork assembly has a 1/4-20 thread pitch. This ensures the stem nut cover will thread on correctly without cross-threading or binding. If your current cover is missing, measure the stud diameter and thread count on the stem nut itself.
Q: How do I cross-reference superseded part numbers for pre-1984 and discontinued models?
A: Use the reference number 45670-80 to identify the correct aftermarket replacement for the 1980-later FXWG and FXST. If your manual lists an older number, it may have been superseded, so verifying the exact year range is crucial. We can check the supersession history if you provide the original number from your manual.
Q: Can I order a single stem nut cover for a custom build without minimum order quantities?
A: Yes, we support single-piece orders for custom builds and repair shops. You do not need to meet a high minimum order quantity to get the exact front end hardware you need. We will still verify the fitment against the 1980-later year range to ensure the 1/4-20 stud thread matches your build.
Q: How do I ensure finish consistency between this chrome plated cover and other front end parts?
A: Request the finish specification document included with your order to verify the chrome plated surface matches your other components. Visual consistency can vary between batches, so checking the specification ensures the cover blends seamlessly with your fork sliders and triple trees. If you need a specific finish match, let us know before placing your order.