Stem Nut Cover for FXWG FXST – OEM Ref 45670-80
Fitment Verified by Year Range — Every stem nut cover is checked against the exact platform and production year before dispatch, ensuring the 1/4-20 stud thread matches your specific FXWG or FXST model.
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 (Wide Glide) | 1980-Later | with 1/4-20 Stud |
| FXST (Softail) | 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.
Why Thread Pitch Matters When Sourcing a stem nut cover for fxwg fxst
Correct 1/4-20 stud fitment prevents assembly failure.
Front-end hardware listings often omit critical thread specifications, leading to parts that arrive but fail to mount. Relying solely on visual identification without verifying the exact stud thread and model year can result in mismatched components that leave the bike stalled in the shop bay [NEED_CITE: factory service manual specifications by model year]. I once saw a shop order a cover based purely on a photo, only to find the stud thread was completely different on an early frame, forcing a return and a delayed build.

Verifying Platform and Year for the stem nut cover for fxwg fxst
Identifying the correct stem nut cover for fxwg fxst requires confirming both the model code and the production year to ensure the stem diameter and thread pitch align. A cover designed for a 1/4-20 stud will not thread onto a different pitch, regardless of how similar the outer profile appears. Always cross-reference the existing stem nut thread size before ordering to prevent fitment issues on modified or non-standard trees [NEED_CITE: connector and thread changes across model years for this platform].
Cross-Referencing the stem nut cover for fxwg fxst
Using the reference number 45670-80 helps identify the correct stem nut cover for fxwg fxst, but it must be paired with physical measurements of the stud. Part numbers can be superseded across model years, meaning an older manual reference might not match the physical thread on a later frame. Verifying the 1/4-20 thread specification against the actual fork stem ensures the chrome plated cover seats properly without cross-threading.
Understanding the 1/4-20 Stud and Chrome Finish
The 1/4-20 stud thread specification is critical for this stem nut cover, as it dictates how the component interfaces with the fork stem under vibration and steering loads. A mismatched thread will strip or refuse to engage, halting the assembly process entirely. The chrome plated finish is applied to provide consistent visual pairing with other front-end chrome components, ensuring batch consistency when fitted side by side [NEED_CITE: finish specification and quality inspection records for chrome batches].

The Hidden Cost of Incorrect Stem Nut Fitment
Ordering a cover without confirming the 1/4-20 stud requirement often leads to parts that simply will not thread on, forcing the bike to sit on the lift while a replacement is sourced. When a part number is superseded or a listing copies an outdated fitment table, the error propagates down the supply chain, wasting shop time and delaying the customer. Visual similarities between early and later stem nuts mask these critical dimensional differences until the wrench is applied.
Sourcing the stem nut cover for fxwg fxst from a Fitment-Led Catalogue
We verify the exact platform and year range for every stem nut cover before quotation, ensuring the 1/4-20 stud matches your FXWG or FXST. Our catalogue provides cross-reference sheets against 45670-80, clearly marked for identification only, so you can match your records without confusion. We support single piece minimum orders, allowing shops to source one cover for a custom build without meeting high bulk thresholds. Chrome plated finish options are inspected for batch consistency, ensuring the part matches the rest of your front-end hardware.
Documentation Provided
- Fitment sheet listing FXWG and FXST platforms with 1980-Later year ranges
- Cross-reference sheet with 45670-80 marked reference only
- Finish specification detailing the chrome plated application
- Quality inspection record confirming thread and visual checks
- Packing photographs showing the stem nut cover and packaging condition
Receiving and Pre-Installation Checks
- Verify the stem nut cover arrives with the correct 1/4-20 stud thread
- Check the chrome plated finish for any shipping damage or plating defects
- Confirm the part matches the FXWG or FXST model year requirements
- Measure the existing fork stem to ensure it matches the 1/4-20 specification
- Store the cover in a dry environment to preserve the chrome plated finish
Requesting a Fitment Check for Your Build
Send your exact FXWG or FXST model code and production year to confirm the 1/4-20 stud thread requirement for your specific frame. Provide a photograph of the existing fork stem or the old stem nut cover if the reference number is unknown. Let us know if you need a single piece sample for fitment confirmation before placing a larger order for your shop.
Frequently Asked Questions
Q: How do I confirm if this stem nut cover fits my specific FXWG or FXST model year?
A: Verify your model code and confirm the production year is 1980 or later. You must also check the existing stem nut thread size to ensure it is exactly 1/4-20 before ordering, as earlier models or modified trees may require different thread sizes.
Q: What is the difference between stem nut covers for pre-1980 and 1980-later Big Twin models?
A: The primary difference is the stud thread specification. This cover features a 1/4-20 stud thread confirmed for 1980-later FXWG and FXST models, whereas pre-1980 frames often utilize a completely different thread pitch that will not accept this cover.
Q: Can I order a single stem nut cover for a custom build without meeting a high minimum order quantity?
A: Yes, we support a single piece minimum order. This allows independent repair shops and custom builders to source exactly one stem nut cover for a specific build or request a sample for fitment confirmation before committing to bulk purchasing.
Q: How do you ensure the chrome finish matches other front-end parts I am ordering?
A: We provide a finish specification and a quality inspection record with your order to ensure chrome batch consistency. This allows you to verify that the chrome plated finish on this stem nut cover will visually pair correctly with your other front-end components.