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EFX Crimp-on Ring Terminals

For amplifier power and ground wires (1 pair, 1/0-ga. 3/8" hole)

Item # 142EFXRT0

California customers:
Please click here for your Proposition 65 warning.

Item # 142EFXRT0

In stock

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About the EFX Crimp-on Ring Terminals

Make connections

Use a pair of these EFX crimp-on ring terminals to make power and ground connections for your amplifier. They're a great way to make tight and secure electrical connections, ensuring trouble-free performance for years to come. Warranty: 1 year.

What's in the box:

  • 2 Crimp-on ring terminals for 1/0 AWG wire (1 with red insulator and 1 with black insulator)

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EFX Crimp-on Ring Terminals reviews

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Crutchfield response

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More details on the EFX Crimp-on Ring Terminals

Mark G.

Product Research


Overview: The Scosche EFX RT0 is a pair of ring terminals for your power cables. The terminals can accommodate 1/0 AWG wire. One terminal has a red rubber insulator boot, and the other has a black insulator boot. The ring has an inside diameter of 3/8".

Crimp Connector: These ring terminals must be crimped onto the end of the power wires. Because of the large diameter, a heavy duty crimping tool is recommended to make a secure crimp. You should strip the wire about 3/4" before inserting into the terminal.


  • Ring Outside Diameter: 0.859"
  • Ring Inside Diameter: 0.417" (for 3/8" bolt)
  • Ring Thickness: 0.05"
  • Terminal Length (w/o insulator boot): 1.954"

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Customer Q&A

Crutchfield asked: Why did you buy this?
Needed for proper install. [ Brian  Feb 22, 2018 ]
Great for cutting and splicing wire to custom length. [ Shane  Dec 06, 2018 ]
To facilitate connections [ McLain  Sep 12, 2018 ]
I needed these ring terminals to connect 4-ga wire to a capacitor. [ Tyler  Apr 25, 2018 ]
Great for wires etc. Safer connection [ Javonka  Apr 10, 2018 ]
They were recommended. [ Dietrich A.  Mar 13, 2018 ]
I needed something to use to connect my power wire cable to my battery terminal. [ Camren  Oct 05, 2016 ]
ground [ julius  Sep 02, 2016 ]
Needed these to install my JBL Club 704 2012 Ford F-150 Lariat [ CRAIG  Jan 01, 2019 ]
I know if I buy from Crutchfield, it is true to size and quality product. [ David  Apr 22, 2018 ]
Went with wire I ordered. [ Christopher  Jan 04, 2018 ]
Just in case it was needed. [ Steven M.  May 25, 2017 ]
Proper sizing [ Zachary  Mar 03, 2017 ]
I needed to connect power to my factory mini cooper battery, seems like a great economical option. wish they sold them as single, I only needed one. [ Benjamin  Feb 06, 2017 ]

1 question already asked

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