Shimano hasn’t released figures comparing the aero performance of WH-R9370 wheels with that of models from other brands. Shimano uses Aero (4.0mm x 1.1mm) spokes on the C36, C50 and C60, Super Aero (5.2mm × 0.8mm) on the C99. It says, “The new Dura-Ace wheels retain Shimano’s adjustable cup-and-cone hub architecture, known for its smooth rotation and precise adjustment characteristics. 2026 Shimano Dura-Ace WH-R9370 wheels – Mathieu van der Poel product testing (Image Credit: Shimano)Five years is a long time in bike tech. > Read our review of the existing Shimano Dura-Ace R9200 groupsetWhen can we expect the full groupset to be launched?