What Our Gearhead(R) Experts Are Saying:"I set up the SC45 i23 on an all-around road build and the balance between climbing weight and flat speed is exactly right for this depth. The 54-tooth ratchet hub engages with the same immediacy you get from much more expensive wheels, and the 23mm internal width with a 28mm tire feels planted and confident on mixed-surface descents."The most useful road wheel is not always the deepest one - it is the one that handles a climbing stage as competently as it handles a technical criterium or a fast rolling sportive. The Vision SC45 i23 Carbon TL Wheelset occupies that practical middle ground, delivering genuine aerodynamic return from the 45mm full carbon rim while keeping the rotational weight low enough to respond well when the road tilts upward. Vision rebuilt the SC45 platform around a 23mm internal rim width that modernizes the wheel's compatibility with wider tire pairings, improving stability and handling character without compromising the aerodynamic profile that makes a mid-depth rim worth choosing. The new PRS hub, inherited directly from Vision's Metron flagship program, brings a 54-tooth ratchet system that translates pedal input into acceleration with sharp, immediate engagement. Six sealed cartridge bearings, 2:1 aero bladed spoke lacing, and fully hand-built construction give the SC45 i23 the structural integrity and long-term reliability that riders logging serious road miles demand from a carbon wheelset.