SC45 i23 Carbon TL Wheelset

What Our Gearhead® Experts Are Saying:

"The SC45 i23 is the wheel I reach for when the course profile is genuinely mixed — enough rim depth to hold speed on flat and rolling sections, light enough that climbs do not feel like a penalty for choosing an aero wheel. The 54-tooth ratchet engagement is crisp and confident, and the 23mm internal width paired with a 28 or 30mm tubeless tire gives you a handling package that is noticeably more stable and planted than what the previous generation SC45 offered."

Course profiles rarely cooperate with wheel selection, and the riders who perform most consistently across varied terrain are the ones whose equipment handles transitions between climbing, flat, and technical sections without demanding compromise at any of them. The Vision SC45 i23 Carbon TL Wheelset is built around that reality, positioning a 45mm full carbon rim depth at the intersection of aerodynamic efficiency and all-around usability — deep enough to hold speed across rolling and flat terrain, light enough at 1,542g per pair to respond with urgency when the road pitches upward.

The evolution of the SC45 platform centers on the widened 23mm internal rim width, a specification change that addresses the growing consensus around wider tire pairings in performance road riding. The broader rim bed allows a 28 to 32mm tire casing to develop a properly rounded profile rather than the aerodynamically inefficient lightbulb shape produced by mounting a wide tire on a narrower rim, improving both the wheel's drag characteristics and its handling behavior at the contact patch. Tubeless-ready clincher construction supports this pairing at reduced pressures, optimizing rolling resistance and compliance across the varied road surfaces that a genuinely versatile wheelset must handle with equal confidence.

Hub performance draws directly from Vision's top-tier Metron development program through the new PRS hub design, which incorporates a 54-tooth ratchet engagement system to minimize the rotational interval between coasting and reapplied power. On a wheel of this depth and weight, that engagement immediacy matters most in the moments that define road racing outcomes — the acceleration out of a technical corner, the response to a sudden attack on a punchy climb, the transition from draft to open effort at the front of a group. Six sealed cartridge bearings distributed two front and four rear support consistent rotation and durability across long seasons, while 2:1 aero bladed spoke lacing manages the asymmetric tension demands of the drive-side rear hub flange to improve lateral stiffness and power transfer efficiency without adding rotational mass. Fully hand-built and compatible with Shimano, Shimano MicroSpline, and SRAM freehub standards, the SC45 i23 is the wheelset for riders who need one set of carbon wheels to answer every question the road asks.