The slightly increased length (239cm) results in a longer available waterline through the critical mid section of the board, for superior low speed performance, stability through chop, lull gliding, and gybing exit. The resulting lower impact angles provide a naturally smooth, controlled trim in rough conditions, allowing significantly higher speed for the conditions. The length is added through the mid section of the board, increasing volume without having to go too thick, and extending the planing length at low speeds which drastically improves efficiency and ease of getting onto the plane.
The parallel outline minimizes both drag, and spray during chop impact events.
Pin Tail - for snap turns and low wake generation, resulting in lower drag.
Advanced Rail Design - rail shapes designed for ultra-clean release resulting in a dry ride, but with deep engagement during gybing for a dependable, stable carve.
Deck Concave - subtle use of deck concaves to stiffen up the deck surfaces without adding extra weight.
Ultra Profile - ergonomically engineered foot profiles, designed for maximum comfort when driving the rail in the most neutral position, and allowing for a maximum steering range through the feet.
Conclusion I keep the radix for some more seasons, I don't miss my previous boards. It did take me a few session to get used to these boards a figuren out the trim.