The Shimano Dura-Ace WH-R9270-C60-HR-TL is the High-Rigidity flagship rear wheel built for powerful riders who demand aerodynamic depth without compromising lateral stiffness. The HR designation delivers 20% greater lateral rigidity than the standard C60, making it the ideal choice for sprinters, time trialists, and riders who push hard on flat and rolling terrain.

Highlights

• 60mm full carbon rim with D2 aerodynamic profile — wind-tunnel tested for reduced drag from 0–15° yaw angles
• High-Rigidity (HR) rim construction — 20% stiffer laterally than the standard Dura-Ace C60
• OPTBAL asymmetric spoke lacing — 21 spokes in a 2:1 ratio (14 drive-side, 7 non-drive-side) for optimised spoke tension balance
• 1.8mm straight-pull bladed spokes — stiffer than the 1.5mm spokes used on non-HR C60 models
• Direct Engagement aluminium freehub body for immediate power transfer
• Clincher/tubeless-ready hooked rim profile — run latex tubes, standard clincher, or go tubeless
• Centre Lock disc brake mount; 12x142mm thru-axle (E-THRU) rear
• Claimed rear wheel weight: 858g

Aerodynamics & Rigidity

Shimano's D2 rim shape is engineered to outperform competitors across the widest range of real-world yaw angles (0–15°), so you stay fast in crosswind conditions as well as still air. At 60mm, the C60-HR sits in the sweet spot for aerodynamic gain on flat and undulating courses — deep enough to cut through the wind, shallow enough to remain manageable in variable conditions. The HR's 20% rigidity advantage means your power goes straight into forward motion rather than lateral flex, which matters most when you're out of the saddle sprinting or driving through a corner.

Hub & Spoke Technology

The rear hub runs cup-and-cone stainless steel bearings with oversized, anodised aluminium axle components and contact seals to keep the drivetrain rolling smoothly under load. The Direct Engagement freehub body accepts Shimano Road 12-speed HG-L2 cassettes. OPTBAL lacing distributes spoke tension asymmetrically — more spokes on the drive side where the dishing is greatest — reducing the stress imbalance that plagues conventionally laced rear wheels and improving overall durability.

Compatibility & Fit

Fits 700c road frames with 12x142mm thru-axle rear dropouts. Centre Lock disc brake rotors only (6-bolt adaptors available separately). Compatible exclusively with Shimano Road 12-speed cassettes (HG-L2 spline); does not accept 10- or 11-speed HG cassettes. Recommended tyre width: 25–32mm clincher or tubeless. Pairs with the WH-R9270-C60-HR-TL-F front wheel to complete the wheelset.