Rueda trasera de disco Shimano Dura-Ace 9270 C36

What stands out first with the C36 rear wheel is how light it feels the moment you stand up on a climb. Shimano put the diet where it counts — the rim itself — and at 730 grams for the rear, this wheel makes hard accelerations and sustained climbing efforts feel noticeably easier than a deeper, heavier aero wheel would.

The new Direct Engagement hub is the real story here, though. It ditches the old pawl-and-ratchet setup for a toothed-disc design that meshes together directly, and you can feel it under hard pedaling — power goes down without any of the slight lag you sometimes notice with a traditional freehub. It's a meaningful upgrade, not just a spec sheet change.

Worth knowing: at 36mm, this isn't an aero wheel in the way a deeper Dura-Ace option is. Shimano tuned it in the wind tunnel and it holds its own on rolling terrain, but riders chasing maximum aero gain on mostly flat courses will get more from a deeper rim. The hooked bead is also a plus for flexibility — it runs tubeless or a standard tube and clincher tire, so it's not locked into one setup the way some hookless aero wheels are.

We'd point this wheel toward a climber or a rider doing courses with real elevation change who wants one set of wheels that rewards every hard effort out of the saddle, not a rider building a wheel bag around a single flat criterium course.