Stinger SPT521 - Customer Ratings & Reviews

Works

Wish I had gotten two but it works well carrying the power to the amp

Good product

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

Very durable and works like a charm

These things are true 4 gauge so make sure your amp has true 4 gauge inputs or it has to be grinding down. It works great and love the quality.

A Must Have

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.

it's too big

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

True to spec

Amazing quality will not strip out, High quality metal. Highly recommend these if you need them.

I have used cheap reducers in the past that costed double the price of these and these are by far much better.

looks great !

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

stinger spt51 0 to 4 gauge input reducers

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.

great product

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

Does not fit

I bought these for the hifonics x2200 amp and they do not fit the 4 guage terminals. Also, the x2200 wire terminals are angled and you would have to raise the height of the amp a bit in order for the amp to even be mounted to a flat surface.
These are good quality adapters but do not work in my situation!!!

Great price

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

Good tool

Great product fit perfect for me and not I have the right power supply thanks sonicelectronix !

Nice price and nice product

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

easy

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

Great product

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

Very Helpful Product

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

great value

Fits awesome my system is doing great,I would definitely recommend

Clean. Solid.

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.

Upgrading BIg 3 Upgrade Kit

Bought the Kicker Big 3 Upgrade Kit at Sonic Electronix and use 3 Stinger SPT521 to have better connection to the Kicker battery terminals. Put some Xscorpion heat shrink and makes it more of a professional look.

Tim

not true 0-4 but still clean solid design. just make sure if your using for both positive and negative on amps that there is enough room between the two as to not short out...these are very fat

By Tim on December 4, 2015 Verified purchase

fabulous quality

Stinger never fails to impress me. perfect quality and fit

Great product

Works as it should. Last along time as the finish is still looking good.

By Steven on October 8, 2016 Verified purchase

Work okay had to modify

Works great.

By kyle on May 24, 2020 Verified purchase

Solidly built

Probably too solidly built as the diameter of these are so large such that they want to touch when trying to put them in the amplifier terminals which is what I wanted them for originally. I ended up using them on distribution blocks instead for which they are excellent.

By Wade on March 7, 2020 Verified purchase

reasonably priced

recommend product
does was it says 1/0 guage wire with a 4 guage input adapter

By Anonymous on August 12, 2019 Verified purchase

Very useful

These make necking down 0 gauge to 4 gauge a breeze. Nice product

By Anonymous on September 11, 2018 Verified purchase

Great by

This item work perfectly for contacting a larger gage wire to the amplifier to the positive side of the battery for better power to by amplifier for better sound I would Definitely Remcemed buying this item again.

By Mark on April 18, 2017 Verified purchase

stinger spt521

i recently purchased two of these they for the most part are a great product i had a small fitment issue the stingers say they go down to 4 gauge but they wouldn't fit into my amp might be on the amp manufactures side but either way the issue was resolved with a little grinding on the stingers they work great!

good product with typical excellent Stinger quality.

these are very nice and handy adapters. A great idea to use if you are trying to maintain a clean wiring install. also, if your primary power wire run is 1/0 AWG and your amp only accepts 4 AWG, these could save you the expense of a 1/0 AWG to 4 AWG power or ground distribution block since these are already step down connections.

4 out of 5 only because I wish they were also offered in matte black. the Shoc-Krome is too much bling for me..... with black amps and dark-colored cables, these stand out more than I would like.

Stinger SPT521

Great prices on great equipment and Fast delivery thanx sonic

By Anonymous on March 6, 2019 Verified purchase

Stinger SPT521

I have hifonics 2400.1D amp it needs 0/1 wire but only has 4ga inputs so this worked perfectly for me if you have an amp that demands lots of power but has small inputs you need this product

A good product

I enjoy the red and black band for the ground and power wire nice amd clean it's a all around good product

hassle free

excellent item if you need larger wire and don't need to modify equipment.
headache free installation.

By Ramon on February 27, 2017 Verified purchase

well, almost worked

these do not fit my phoenix gold sd800.4, not sure if its the stingers that are over sized 4ga or if the amp is undersized, but they aren't even close

Amp advertises that it accepts 4gauge,these don't fit, and @ 10$ a piece.. thats kind of a loss

By joshua on May 18, 2016 Verified purchase

Great adapter

Works just as designed. I like the red and black collar bands but I like to heat shrink all end's. Because they are pretty close together.

By jeremy on March 17, 2024 Verified purchase

Probably the best

Love stinger products. Great quality. If you can get on sale buy!

By Doug on May 24, 2024 Verified purchase