Detail 01
45-125 gauge
Standard 45 on top with an extra-thick 125 low string. The bottom end carries most of the added tension.

Independent shopping perspective
Five-string bass set built for down-tuning, 45-125. For players who tune below standard and want the low B to stay tight.

Strong match
Consider the trade-offs
What matters in use
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 01
Standard 45 on top with an extra-thick 125 low string. The bottom end carries most of the added tension.
Detail 02
Tension is set so the strings feel normal when tuned below standard, not when tuned to concert pitch.
Detail 03
Thicker than the common 130 alternatives are heavy. Holds pitch clearly when dropped instead of turning to mush.
Detail 04
Sized for a 5-string bass only. Nut slots cut for a lighter B may need filing to seat the 125.
Detail 05
Slightly softer feel and needs stretching in. Do not cut the string before it is locked at the tuning post.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
They will tune up, but tension will feel stiffer than a standard set. This set is designed to feel right when tuned below standard.
Check the string length against your bass before installing, especially on 35" scale or string-through-body instruments where the winding must clear the nut.
Not always. Basses cut for a 120 or 125 B are usually fine, but a narrower slot needs filing by a tech.
They are built to hold definition when dropped below standard. A full step down on the B is what the heavier gauge is there for.