Detail 01
2+2 arrangement
Two tuners per side of the headstock. Handed pairs — they will not fit a 4-in-line headstock without redrilling.
Product detailSKU #1292606661803
Proline2+2 Bass Tuning Machines Chrome
Independent shopping perspective
The Korena take
Chrome bass tuners in a 2-per-side layout. For replacing worn or broken machines on a four-string with a two-and-two headstock.
Strong match
Who this is for
- Replacing seized or slipping tuners on a four-string bass
- Restoring a bass with mismatched or missing machine heads
- Refreshing worn hardware on a chrome-fitted instrument
Consider the trade-offs
When to look elsewhere
- Basses with all four tuners on one side of the headstock
- Five- and six-string basses needing a matched full set
- Anyone matching black or gold hardware on the rest of the bass
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
Chrome finish
Bright silver. Matches chrome bridges and control knobs; will look off next to black or gold hardware.
Detail 03
Bass machine heads
Larger posts and stronger gearing than guitar tuners, sized for the tension and thickness of bass strings.
Detail 04
Full set of four
Replacing all four at once keeps tuning feel and appearance consistent across the headstock.
Final check
Know before you order
- 01Measure your existing peghole diameter before ordering — bass holes vary by builder
- 02Mounting screws may not line up with old holes; you may need to fill and redrill
- 03Restring and retune after installation, then check intonation
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will these fit my bass?
Only if your headstock has two tuners per side. Check your peghole diameter against the tuner post before installing, since bass peghole sizes differ between builders.
02Is this a full set or a single tuner?
A 2+2 set covers all four positions on a standard four-string headstock.
03Do I need special tools?
A screwdriver and a wrench or socket for the mounting nut. A peghole reamer only if the existing holes are undersized.
04Can I use these on a five-string?
No. A five-string needs five tuners, and the headstock layout will not match a 2+2 set.
