Huma FX Impact Tuning Hammer Spring - High Power

Power tuning Hammer spring for your FX Impact MKI or MKII

This hammer spring has a bit more higher power curve compared to the MKI hammer spring what will give you more flexibility and power adjustment options when using the power wheel of your FX Impact.

It's great when you want to tune your FX impact for slugs or hybride slugs and we prefer to use this spring over the factory spring when you use the power plenum in the MKII