Metra 44-US01R Side or Top Mount Rubber Antenna - Replacement Fit

In this review the Metra 44-US01R is presented as a straightforward replacement antenna for vehicles that need a side or top mount solution. The single biggest reason to consider it is the combination of a heavy-duty split ball base and a removable 14in conductive rubber mast, which together make installation and retrofit simple for most factories with a four-hole mounting pattern. The package also includes a long 204in extension cable option and impedance matching capacitors on compatible extension models to reduce signal loss, so installers get both convenience and attention to real-world reception needs.

Key Features

• Split ball heavy-duty round base: Provides a secure fit for four-hole applications and helps reduce vibration at the mounting point.
• 14in removable black conductive rubber mast: Lets users replace or remove the mast easily for transport, clearance or customization.
• Rubber antenna construction: Offers a flexible, damage-tolerant alternative to rigid metal masts that fits common vehicle styles.
• 204in antenna extension cable: Extends routing options for installation and reaches radios mounted deeper inside the dash or behind panels.
• Impedance matching capacitors on extensions: Included on certain extension models to prevent signal loss and maintain reception quality in real conditions.

Who It's For

This antenna is best suited for vehicle owners and installers looking for a like-for-like replacement or retrofit for cars with a compatible four-hole mounting surface. It is a practical choice for those who prioritize easy installation, decent reception and a low-profile rubber mast that removes quickly when needed.

Those who need a long-lasting heavy-duty commercial antenna or who are highly concerned about long-term durability under extreme conditions should research alternate designs; some users have reported breakage under stress. Still, for routine passenger vehicle use and simple aftermarket replacements this model meets common needs without complexity.

Pros & Cons

Pros

• Works well as a direct replacement and fits common four-hole mounting patterns with minimal modification.
• Build quality and ease of installation are strong points, with a removable mast that simplifies service and transport.
• Extension cable and impedance matching on supported models preserve reception when routing extra length is required.
• Rubber mast reduces the chance of causing damage during minor impacts compared with rigid antennas.

Cons

• Durability is mixed in user reports; a few customers found the mast or base can break under heavy stress.

Specifications

Brand	Metra
Model	44-US01R
Mount type	Side or top mount, 4-hole application
Mast	14in removable black conductive rubber
Base	Split ball heavy-duty round black base
Extension cable	204in (518cm) cable included option
Impedance matching	150pf capacitors included on compatible extension models

Our Verdict

The Metra 44-US01R is a solid, value-oriented replacement antenna for most passenger vehicles that require a side or top mount, four-hole solution. It combines a sturdy split ball base, removable 14in rubber mast and an available 204in extension with impedance matching to maintain reception when longer cable runs are needed. Buy it if you want an easy retrofit with good reception; consider heavier-duty alternatives if long-term rugged durability is your top priority.

Frequently Asked Questions

Does this antenna fit four-hole mounts?
Yes, the 44-US01R is designed specifically for four-hole side or top mount applications.

Is the mast removable for transport?
Yes, the 14in black conductive rubber mast is removable to simplify transport and storage.

Will the extension cable affect reception?
When using compatible extension models the included 150pf impedance matching capacitors are intended to prevent signal loss and preserve reception quality.