Liquid Force RDX Wakeboard Black 134. Ultra-smooth pop off the wake and ultimate confidence on the water! The RDX features quad molded-in fins which are deep enough for extra hold when needed, but still allow for a loose, fun ride. Its Progressive 3-Stage Rocker gives you all the pop you are looking for, while the single to double concave center hull softens the landings for when you really send it!! Take a set on an RDX today, you’ll be surprised at how quickly your bag of tricks starts to grow. With a size range from 130cm all the way up to 146cm, there’s an RDX for every rider.