https://www.casterracingrc.com/product-page/front-spring-set-et092-soft-hard-4
Front Springs Set ET092 Medium / Hard (4) | Caster Racing USA
Front Shock Spring Kit (Set of 4)- 2 Medium 70mm Tall 1.4mm 8 coils- 2 Hard 70mm Tall 1.5mm 7 coils
caster racingfrontspringssetmedium