Detail 01
4/4 size
Cut for a full-size bass speaking length. A 3/4 bass leaves too much string past the tuner post.
Product detailSKU #1274115037568
ThomastikSpirocore 4/4 Size Double Bass Strings 4/4 Set
Independent shopping perspective
The Korena take
A complete four-string set for a full-size upright bass. For players re-stringing a 4/4 double bass and buying all four at once.
Strong match
Who this is for
- Players re-stringing a full-size 4/4 upright bass
- Anyone replacing a worn set rather than one broken string
- Bassists who want all four strings matched from one set
Consider the trade-offs
When to look elsewhere
- Bass guitar players — these will not fit an electric bass
- Owners of 3/4, 1/2 or smaller basses
- Players who only need one string replaced
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Double bass, not bass guitar
Bowed upright strings. Wrong length, wrong ball ends and wrong tension for any electric or acoustic bass guitar.
Detail 03
Full set of four
Covers E, A, D and G. Changing all four keeps tension across the bridge even instead of lopsided.
Detail 04
Thomastik Spirocore
A named string line. Sticking to one line across all four keeps feel and response consistent string to string.
Detail 05
$385.95 for the set
Upright sets are a real expense, so most players change them on a schedule rather than at the first sign of wear.
Final check
Know before you order
- 01Strings only — no bow, rosin, tailpiece wire or tools included
- 02Change one string at a time so the sound post stays seated
- 03Confirm your bass is 4/4; a 3/4 body needs 3/4 strings
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will these fit a 3/4 double bass?
No. They are cut for a 4/4 instrument. On a 3/4 bass the winding sits in the wrong place at the nut and the tuner post.
02Are these for upright bass or bass guitar?
Upright double bass. They will not fit a bass guitar regardless of how it is strung or tuned.
03How many strings come in the set?
Four — E, A, D and G, sized for a full 4/4 bass.
04Do I need a luthier to install them?
Not necessarily, but swap one string at a time. Taking all four off at once can drop the bridge and sound post.
