Expert Service 1-877-289-7664 [Hours]

Stinger SPT521 (Chrome)

Gauge Reducer, 1/0 Gauge Input to 4 Gauge Pin

In Stock
|

List price $17.99

$7.99

with warranty

You Save: $10.00 (55.59%)

Arrives by Tuesday, Sept. 9 to zip 98109

60-Day Money-Back

Hassle Free Returns

Low Price Guarantee

Seen it for less? Click here

365-Day Coverage

Warranty assistance for a year

In Stock

Arrives by Tue, Sept. 9

Get FAST answers from customers ASK a Question See questions answers

  • Gauge Reducer Adapter
  • 1/0 Gauge Input to 4 Gauge Pin
  • Deep wire recesses
  • Oversized set screws
  • Ultimate power delivery
  • Improves cosmetic apperance
  • Corrosion resistant Shoc-Krome plating
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Product History:

Stinger SPT521 thumbnail
(newest, current model)
Stinger SPT821 thumbnail
(previous model, replaced by Stinger SPT521 (Chrome))

Connector Specifications

Connector Type
There are many different ways to connect wires together. Often times when doing your own installation, you will be in need of specific types of connectors. This is the specific type of connector or terminal that is included with this item.

Bullet and Butt connectors are used to connect to wires together. Butt connectors are often used when installing an aftermarket headunit to the factory harness.

Quick Disconnect Connectors are used primarily in head unit or speaker applications. They provide a simple and easy way to connect or disconnect your wire.

Quick Splice Adapters and T-Tap Connectors can quickly tap a wire to already connected wire.

Relays, Relay Sockets and Switches are used for electronic applications such as car alarm installations and other audio applications.

Ring and Spade Terminals connect wires to a terminal. These are mainly used in battery hook-up, amplifier connection, speaker connection, and other various installation applications.

Gauge Reducer
Connection Gender
This is the gender of the connector. Usually a specific type of connector will have both male and female connectors. Please make sure that you order the correct gender of connector that is required for your installation.
Male
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
1/0 AWG
Primary Color
This is the main color of the item.
Chrome
Quantity
This is the amount of units that is included with the item.
1

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
58%
4 Star
42%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.8
Value
4.6
Features
4.8
Design
4.8
Usability
4.8

Brandon

pomfret md

Overall
Durability
Value
Features
Design
Usability

great product

August 29, 2014

This product works great and looks great adds the extra power to where its needed and makes it fit nicely

0 of 0 found this helpful

Help our customers find the most helpful reviews

teamaudioturbulance

rootstown ohio

Overall
Durability
Value
Features
Design
Usability

stinger spt51 0 to 4 gauge input reducers

July 20, 2014

These are great! True zero gauge to 4 gauge input reducers. only down fall is that they need to be ground down to fit lower quality amplifiers that dont have true inputs.

0 of 0 found this helpful

Help our customers find the most helpful reviews

REM

Los Angeles, CA

Overall
Durability
Value
Features
Design
Usability

A Must Have

July 8, 2014

Besides how bad*ss these things make the install look, they definitely serve a purpose. I do believe I am getting a far better connections with these. I picked up Six of these for various parts of the install, and I LOVE the look. I plan to get a few more for the next step of the install.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Big John

Ludowici, GA

Overall
Durability
Value
Features
Design
Usability

looks great !

May 3, 2014

I love these adapters ! Oversized wire looks great going to a small amps . These adapters work great !

0 of 0 found this helpful

Help our customers find the most helpful reviews

Jmiller368

Harrison Twp. Michigan

Overall
Durability
Value
Features
Design
Usability

Good product

April 30, 2014

I would recommend this product because it makes a good connection instead of trying to stuff the 0 gauge wire into a 4 gauge terminal. You need to have good clearance between the positive and ground on the amp for these to work so check before you order these. I had to slightly modify mine to work

0 of 0 found this helpful

Help our customers find the most helpful reviews

Mikey

battiest, OK

Overall
Durability
Value
Features
Design
Usability

it's too big

April 11, 2014

Its too large for either a crunch or hifonics mono sub amp that says the size cable they can use to power them is 4 gauge but these didnt fit , had to grind mine down too fit, cuz I am obviously using them to connect 1/0 gauge wire too an amp that it didnt fit, overall , good product , looks professional when you are showing it off even after grinding on them

0 of 0 found this helpful

Help our customers find the most helpful reviews

Tyrone

Bennettsville, SC

Overall
Durability
Value
Features
Design
Usability

Great price

March 19, 2014

I would recommend this to anybody because it helps out with installation. Just took a little longer getting here.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Nicolas

Chile

Overall
Durability
Value
Features
Design
Usability

Nice price and nice product

November 29, 2013

just the perfect size and the perfect product, it fix pretty good for 0 gauge cable.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Joseph

west Warwick, RI

Overall
Durability
Value
Features
Design
Usability

easy

August 15, 2013

Great product easy hook up makes everything look better too worth it

0 of 0 found this helpful

Help our customers find the most helpful reviews

Gary

MD

Overall
Durability
Value
Features
Design
Usability

Clean. Solid.

August 7, 2013

Even with aftermarket battery terminals I was having a hard time getting everything clean and neat. This allows enough of the wire to be inserted to insure a secure connection. The half moon or D shaft allows for a very secure connection with any set screw terminal.

0 of 0 found this helpful

Help our customers find the most helpful reviews

J

Red Wing, MN

Overall
Durability
Value
Features
Design
Usability

Very Helpful Product

March 8, 2013

Makes life easier if you have 0AWG power and ground wire trying to squeeze it into your amps 4AWG terminals. Made great, easy application.

0 of 0 found this helpful

Help our customers find the most helpful reviews

kenneth

Palmyra, VA

Overall
Durability
Value
Features
Design
Usability

Great product

February 5, 2013

This was a great product. One gauge wire is always hard to deal with and this made it easy to hook up my amp.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Browse 1 question and 2 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
This will make your 0 gauge wire go in easier to amp
Jose M on Aug 20, 2014
Needed these reducers to fit my amp.
Caleb K on Aug 9, 2014

Product Summary

Manufacturer

Model Number

SPT521

Weight

0.50lbs

Internal SKU

spt521

Internal Product ID

46119

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Stinger SPT521 (Chrome)