Hardened Ring Gear 38T (1pc)
Redcat Racing indicates this will work with:
DUKONO, LIGHTNING EP DRIFT, LIGHTNING EPX PRO, LIGHTNING STK, TORNADO EPX/EPX PRO, VOLCANO EPX/EPX PRO, VOLCANO S30, CAMO TT PRO, CAMO X4 PRO, DUKONO PRO, LIGHTNING STR, SHOCKWAVE, TORNADO S30, VORTEX EPX/EPX PRO, VORTEX SS