This PolarStar Standard Heavy Strength Nozzle and Poppet Spring for the F2 and Fusion Engine is a direct replacement for your original springs that come with your unit. This can be used for either the nozzle spring or poppet spring.
Compatible with the following systems:
PolarStar Fusion Engine
PolarStar F2
PolarStar Kythera
If you are looking for the light weight poppet and nozzle spring, we have those located here: PolarStar - Light Nozzle/Poppet Spring for F2 and Fusion Engine
