Replacement spring for the mechanical valve of the Record Monza exhaust.
mounts on the first series terminals, not on the active one.
Harmonic wire steel wire spring identical to the one used on Abarth's Record Monza
Replacement spring in case:
- the original spring no longer works correctly
- you want to change the performance of the original spring (by lengthening it to open the valve more easily) but you don't want to risk it in the event of an overhaul
It can be changed with a pair of pliers
