Axis Progressive Rear WingThe AXIS Progressive rear wings are all round wings for intermediate and advanced riders and can be paired with Axis HPS, ART, BSC and PNG wings. Mostly flat but with a very subtle downturn, these wings combine excellent speed with sensational turning. We got super hooked on the locked in, fast, stable feel of the AXIS Speed 380 60 and 420 60 rear wings, and still are for flat water blasting and racing for winging and big, fast waves for foil surfing.