The Science of Speed. Speed was the mainspring in the development of this 12-speed road bike series of a new generation. Several years of research produced those innovations that make the Shimano Dura Ace R9200 even faster. Every component has been revised, refined and optimised to enable the decisive seconds of advantage – whether as a breakaway from the peloton or in the finish sprint on the Champs-Élysées.
The wheels are a decisive pillar in Shimano's "Science of Speed" development concept, they literally bring the rider's performance to the road.
Not only the low overall weight, but also the weight distribution make the WH-R9270-C36 wheelset the right choice for the mountain stage. Where possible, the C36 rim design saves mass to allow for excellent acceleration and a dynamic feel on the climbs as well as in the corners.
The 36 mm high profile not only impresses with its low weight, but also scores with good aerodynamic properties which it owes not least to the sophisticated D2 rim design. The new wheel generation not only shines with reduced air resistance, but also offers technical refinements.
Thanks to Direct Engagement technology, the freewheel hubs offer outstanding drivetrain stiffness which results in an even more direct feeling of power transmission and is particularly noticeable in the starting torque. Meanwhile, the OPTBAL system with its 2:1 spoke ratio further improves the stiffness of the rear wheel.
Aerodynamic performance is affected by wind direction. When developing the D2 rim profile, Shimano's engineers took both headwind and crosswind into account to ensure optimum performance under real-world riding conditions.
Extensive prototype testing in the wind tunnel and on the road has shown that a wide rim shape and deep rim well offer the best performance under a wide range of conditions. At yaw angles from 0 to 15 degrees, the D2 rim design reduces drag better than other aerodynamic rims. It also increases the wheel's lateral stiffness and improves vertical directional stability, resulting in more control, comfort and durability on the road.
Wheels with the OPTBAL system use a 2:1 spoke ratio, resulting in twice as many spokes on the drivetrain side as on the opposite side. The technology counteracts the unbalanced tension caused by increasing cassette widths, especially on the right side. The OPTBAL construction balances out this spoke tension increasing the spokes' lifetime and improving the stiffness of the entire wheel as well.
Material:
Compatibility:
Weight (manufacturer's specs):
approx. 730 grams (rear wheel)
Scope of supply:
front wheel + rear wheel, incl. Tubeless rim tapes
Color: | Black |
Etrto: | 21-622 |
Spokes: | Straightpull / 2.0 - 1.5 - 2.0 mm |
Weight: | 1350g |
Activity: | Cycling |
Material: | Carbon |
Item code: | SHI549899 |
Rim width: | 28mm |
Tire type: | Wire Bead Tire, Folding Tire, Tubeless Ready |
Model year: | 2023 |
Wheel size: | 28" (622mm) |
Freehub body: | HG L2 (Shimano 12s only Road) |
Manufacturer: | Shimano Parts |
Product name: | Shimano Dura Ace WH-R9270-C36-TL Wheelset - Tubeless - Centerlock - 12x100 / 12x142 mm - HG L2 | 12-speed |
Axle standard: | 12x100mm (FW), 12x142mm (RW) |
Wheel version: | Wheelset, Wheelset 1300-1700g, Standard Wheel |
Braking system: | Centerlock/AFS |
Freehub system: | Direct Engagement |
Shifting system: | 12-speed |
Usage bikesport: | Road Bike |
Freewheel system: | Ratchet |
Manufacturer page: | http://www.shimano-europe.com/ |
Smallest sprocket: | 11 |
Rim profile height: | 36mm |
Inner profile width: | 21mm |
Number of spoke holes: | 24 |
Manufacturer item code: | EWHR9270C36LFEREDX |
Fitting tire dimensions: | 25-32mm |