Detail 01
Cord (the string) plus spring
These are the two wear parts inside the pedal. The cord drives the pot as you rock the treadle; the spring keeps tension on it.

Independent shopping perspective
Replacement cord and spring set for Ernie Ball volume pedals. A repair part, not an upgrade — buy it when your pedal's string or spring gives out.

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
These are the two wear parts inside the pedal. The cord drives the pot as you rock the treadle; the spring keeps tension on it.
Detail 02
You are replacing consumable parts inside a working pedal, not swapping the potentiometer or the housing.
Detail 03
Sized for Ernie Ball volume pedals. Other brands use different lengths and anchor points.
Detail 04
Cheap enough to keep two on hand. A broken cord kills a pedal mid-set with no workaround.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
The treadle moves freely with no change in volume, or it feels loose and slack. A working pedal has firm resistance through the whole sweep.
It is made for Ernie Ball volume pedals. Other brands use different cord lengths and spring tensions, so it will not fit reliably.
It means opening the pedal and routing the cord around the pot pulley. Doable with basic tools, but it is fiddly the first time.
At this price, yes if you gig. The cord is the part most likely to fail, and it fails without warning.