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SIT Strings Foundations Nickel Bass Guitar Strings (S.I.T.), 5-String Bass Custom Light 40-120, FN540120L

Based on 41 reviews
Condition: New
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$34.47

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Availability: Only 6 left in stock, order soon!
Fulfilled by GimmeSomeStrings

Arrives Saturday, Nov 14
Order within 12 hours and 30 minutes

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At a glance

Condition
New
Size
5-String Custom Lt (40-120)
Model
FN540120L
Color
Silver
Material
Nickel
String Gauge
Custom
Instrument
Bass Guitar
In the box
Strings only

Features 4

  • MODERN TONE WITH BALANCED POWER: Foundations Bass Strings feature a specially formulated nickel alloy wrap wire for a bold, articulate tone with smooth top-end presence and deep, punchy lows. Perfect for players who need clarity and consistency across any genre or tuning.
  • FLEXIBLE FEEL & RESPONSIVE PLAYABILITY: Designed with a refined core-to-wrap ratio, Foundations deliver a comfortable, fast feel under the fingers with exceptional dynamic control. Whether youre slapping, picking, or playing fingerstyle, these strings respond instantly to every nuance.
  • STAY IN TUNE BUILT FOR RELIABILITY: Precision-wound on state-of-the-art machinery for perfect tension and tuning stability. Foundations hold pitch even under aggressive playing styles, ensuring your tone stays strong and focused through every session or show.
  • MADE IN THE USA ENGINEERED FOR PERFORMANCE: Proudly crafted in Akron, Ohio, every set of Foundations is tested, inspected, and sealed for consistency and quality. Trusted by professional bassists who demand precision, power, and a modern voice that stays in tune.

Description

  • Gauges: .040, .060, .080, .100, .120
  • Made in U.S.A
  • Designed to be the brightest and most flexible bass string available
  • Extremely responsive to the touch

Foundation are the latest offering from S.I.T. Strings' Line of bass strings. These strings are made with a state-of-the-art core material that creates a string that is extremely responsive to the touch. Designed to be the brightest and most flexible bass string available, The foundation are sure to become the building blocks of your sound. Available in both nickel and stainless 4, 5, and 6 string combinations.

Specs 20

Brand SIT Strings
String Gauge Custom
Color Silver
Instrument Bass Guitar
String Material Type Nickel
Brand Name SIT Strings
Number of Items 5
Global Trade Identification Number 35

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Nov 14

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


They feel & sound great as well as budget friendly.
Lighter strings just bring out sonic characteristics in my bass that I’ve recently come to love and finding these light gauge 40-120 strings was just as amazing. They seem well made, they are round wound…not as silky smooth as a coated Elixr but not as rough and harsh and a pack of Ernie Ball strings either…somewhere in-between closer to the comfort side of that spectrum. I’ve had my first Foundation 5 string set for a few weeks now plying at least 2-3 events a week and they have yet to loose any tonal quality (getting dull-sounding). The most awesome thing for me was finding a quality set of 5 string bass strings for under $40-$50 bucks that are ACTUALLY good and inspire more playing! Loving them! ... show more
Reviewed in the United States on July 11, 2023 by ROCKWELL S.

Excellent strings with balanced tone
Bought these for a nice used Schecter Stiletto Custom 5 I recently bought. Very pleased with the feel, low tension and balanced tone. I will continue to use these strings, and may get a 4 string set for my Stingray too.
Reviewed in the United States on July 4, 2023 by Stingraybassman

Absolute best IMO!
Strings are awesome. Give me all the tone and flexibility I desire. With a good setup, the foundations are pretty responsive. Don't have a lot of tension either for your benders out there. They're perfect for me. I get good clean bottom, distinct mids and aggressive highs that don't peek with these on my PJ bass. And they certainly stay in tune hence the name. I can attest to this. My bass sits in the corner up against the wall when not in use. And usually only 1 or 2 strings (I play 5 string) are ever so slightly "off". Break in period isn't strenuous either. I like that. I hate getting new strings and having to play the dirt off of them to get them worry free and gig ready. For my tone/feel preference....these are top 5 in my book. And the price makes them top 3. ... show more
Reviewed in the United States on October 10, 2021 by Kevin Lawrence

Tone is the most Important thing!
These S.I.T. Foundation strings make my 2005 Diamond series active 5 string Schecter Bass come alive!! I won't use anything eles!
Reviewed in the United States on August 4, 2021 by Timothy Hogan Timothy Hogan
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