AUC1170
Factory-Original SU piston spring.

This is the "Green" version with a load at length of 12 oz. @ 3.000 in.

It is recognizable by the green paint on one of the ends (see photo).

These springs generate a resistance which balances the venturi size with the correct air flow and mixture.
Consequently, this spring is considered an important "tuning part" so choose yours wisely.

This product is priced, and sold, as a single unit.
Required quantity per carburetor: 1

This is an original SU part.

This is SU part number: AUC1170 / AUC 1170

* Made in the UK *