FENRIR Bar-End Mirror Adapter 801-0380 — CNC Anodized Aluminum Bolt-In Fit for Threaded Handlebars

FENRIR's 801-0380 is a precision-machined aluminum adapter that lets you mount FENRIR bar-end mirrors into handlebars with internal threads.

This compact adapter converts handlebars with original threaded inner ends so FENRIR bar-end mirrors bolt in securely. Built from anodized aluminum with CNC tolerances and stainless hardware, it’s designed specifically for FENRIR brand bar-end mirrors; it is not compatible with other manufacturers’ mirror systems. Installation is straightforward and intended for riders who want a clean, factory-style mirror mount without replacing the entire handlebar assembly.

How does the adapter attach to my handlebar?

The adapter threads into handlebars that already have an internal threaded end. Once the adapter is in place, you bolt your FENRIR bar-end mirror directly into it, providing a stable connection with no additional expansion mechanism required.

• Fits handlebars with factory internal threads
• Secures using included stainless steel screws
• Designed for direct bolt-on installation—no drilling or welding

Will this work with non-FENRIR mirrors or custom bars?

This adapter was engineered to match FENRIR bar-end mirror dimensions and thread patterns; it will not guarantee fit with other brands. Custom or non-standard bars may require different adapters or modification, so check thread size and mirror mounting specs before buying.

• Only compatible with FENRIR bar-end mirrors
• Not suitable for aftermarket mirrors from other brands
• May be incompatible with modified or non-threaded handlebar ends

What materials and finish are used, and why does that matter?

The adapter is CNC-machined from aluminum alloy and finished with an anodizing process to resist corrosion and wear. Stainless steel screws are supplied to prevent rust and to maintain a secure clamp over time, making the assembly durable for road use.

• CNC machining ensures consistent dimensions and tight tolerances
• Anodized surface adds abrasion and corrosion resistance
• Stainless screws reduce risk of seizing and corrosion

How difficult is installation for someone with basic tools?

Installation is intended to be quick for anyone familiar with basic motorcycle maintenance. You need common hand tools to remove existing bar plugs, thread the adapter in, and fasten the mirror—no specialty tools required.

• Typical install time: 10–30 minutes per side
• Requires basic hand tools—hex keys or screwdrivers as needed
• Instructions: remove existing plug, thread adapter, secure mirror

Who is this for: The FENRIR 801-0380 adapter is aimed at riders who already own FENRIR bar-end mirrors or plan to buy them and want a neat, reliable factory-style installation on handlebars with internal threads. It’s especially useful for owners who prefer a lightweight aluminum component with a corrosion-resistant finish and precise fit. If your handlebars or mirrors are from another brand or lack internal threads, this specific adapter will not fit—measure and confirm compatibility before purchase.