Shimano Ultegra WH-R8170-C50-TL 11/12 Speed Wheelset

Shimano Ultegra WH-R8170-C50-TL 11/12 Speed Wheelset

Shimano Ultegra C50 Tubeless Disc Brake Wheel Front & Rear

Elevate your cycling experience with the Shimano Ultegra WH-R8170-C50-TL 11/12 Speed Wheelset. This set of wheels combines aerodynamics, lightweight design, and affordability to bring you a high-performance option for your rides.

A Wheelset for Every Ride: The Ultegra C50 Tubeless Disc Brake Wheelset is a versatile choice suitable for various riding scenarios. Whether you're conquering climbs, descending with precision, or cruising on flat terrain, these wheels are designed to excel.

Tubeless Carbon Rim: Experience the benefits of a tubeless carbon rim with a 21mm internal width. This modern design pairs perfectly with wider tires, enhancing your grip and stability on the road.

Compatibility and Performance: The Hyperglide cassette body ensures compatibility with both 11 and 12-speed cassettes, giving you versatility in gear options. Expect smooth and efficient shifting, whether you're climbing steep gradients or enjoying a fast descent.

Inspire Action on Group Rides: The Shimano Ultegra R8170 C50 wheelset is designed to inspire action during your group rides. Its combination of features and performance makes it a reliable choice for cyclists looking to enhance their riding experience.

Features

Features of Shimano Ultegra WH-R8170-C50-TL 11/12 Speed Wheelset

50 mm Full Carbon Rim Height: The 50mm height full carbon rim offers an ideal balance of aerodynamics and stability, allowing you to excel in a variety of riding conditions.

Internal Rim Width 21 mm: The internal rim width of 21 mm provides compatibility with wider modern tires, enhancing grip and control on the road.

Shared Rim Profile with R9200 DURA-ACE Wheels: Benefit from the same rim profile shared with the high-performance R9200 DURA-ACE wheels, ensuring top-tier aerodynamics and performance.

Improved Aerodynamics: The wheelset's design is optimized for improved aerodynamics, reducing air resistance and helping you glide through the wind more efficiently.

Specifications

Specifications of Shimano Ultegra WH-R8170-C50-TL 11/12 Speed Wheelset

Technologies

Technologies of Shimano Ultegra WH-R8170-C50-TL 11/12 Speed Wheelset

Shimano Wheel Technology:

Science Of Speed:

Wheel performance is determined by three factors: Aerodynamics, Rigidity and Weight.

The new Shimano Road Wheel collection optimizes the balance of those characteristics based on specific applications like climbing, all-round performance, or high-speed scenarios. Wheels unlike any other.

One Pedal Stroke, And You're Off.

We re-examined rigidity, weight, and acceleration from every angle. The resulting wheels respond smoothly and swiftly to every stroke of the pedal, encouraging you to find your limits.

Decomposition of Acceleration Performance: To develop a wheel that advances crisply, responding to the rider’s pedaling force, that is, a wheel with excellent acceleration performance, we made efforts to achieve two elements: improvement of drive rigidity and reduction of energy required for acceleration.

Drive Rigidity: We succeeded in dramatically increasing the drive rigidity compared to that of a conventional model.

Compared to the conventional product C40-TL, the drive rigidity has improved by 63% on C36-TL, by 69% on C50-TL, and surprisingly by 89% on C60-HR-TL (high-rigidity specification).

Decrease of Energy Required for Acceleration: Compared to the conventional product C40-TL, the energy required for acceleration has been reduced by 12% on C36-TL, by 10% on C50-TL, and by 6% on C60-HR-TL.

Once You’re Rolling, You’ll Never Want To Stop

Cycling is a battle against all kinds of resistance: the wheel against gravity and aerodynamic drag, and the hub internals against rolling resistance. We reduced resistance at every opportunity, so once you’re at speed, you’ll never want to stop.

[C50]: All-Rounder: 

An all-round model that focuses on classic races with intense up-and-down and solo escapes.

Fast, easy to handle, and light. A versatile model that has aerodynamic performance comparable to that of C60 but can also easily climb slopes with a weight close to that of C36.

Focusing on races with intense ups and downs, the model was designed to offer riders an advantage in various situations that are directly linked to victory or defeat. Such situations include a powerful attack on a short steep slope, a technical downhill with many corners, and escaping from opponents.

C50 is the best all-round wheel in Shimano’s history, our recommendation for all riders.

E-Thru: 

The tool-less type thru-axle skewer system optimizes rigidity and weight balance and enables easy operation with a reliable internal cam mechanism. The 15 mm thru-axle system is 15% stiffer torsionally and 25% stiffer in transverse shear than a traditional 9 mm quick release front axle system. High rigidity is secured while keeping the optimum weight balance. The E-Thru axle hub system minimizes the distortion of suspension while maintaining lightweight for riding around sharp corners at high speed.

Center Lock: 

The Center Lock system makes an easy rotor installation possible with spline mount and a lock ring. The lock ring mounting system reduces the total working hours by shortening the amount of time of both installation and de-installation. In addition, the secure fixing by the spline mount enhances precision and rigidity while improving braking efficiency.

D2: 

Aerodynamic performance is affected by wind direction. To create the D2 rim, Shimano engineers considered both frontal and cross winds, aiming to achieve optimal performance in real-world riding conditions. Extensive prototype testing, in the wind-tunnel and on the road, proved that a wide rim shape with a deep tire bed performs best across a wide range of conditions. At yaw angles ranging from 0 to 15 degrees, the Shimano D2 rim profile reduces air drag better than others aero shape rims. This rim design also boosts lateral wheel stiffness and offers improved vertical compliance for increased control, comfort and durability on the road.

Aerodynamics:

Compared to the conventional product C40-TL, air resistance has been reduced at all yaw angles on C36-TL, which has about the same rim height. In the conversion method that considers the direction of the winds received under actual running conditions*, the drag has been reduced by about 3 W.

Of course, air resistance has been further reduced on both C50-TL and C60-HR-TL.

* Calculated by weighted averaging the air resistance values measured in wind tunnel tests with the wind direction ratio of the winds received during running. The wind direction ratio is obtained by actually measuring, with an ultrasonic anemometer, the direction of the winds received by a rider when traveling at a speed of around 48 km/h in an environment with a wind velocity of 3 to 5 m/s.

OPTBAL:

The OPTBAL rear wheel spoke system features 21 spokes—14 on the drive side and 7 on the non-drive side. Cassette spacing in today’s wheels produces unbalanced tension in traditional 1:1 spoke systems. This unbalance is intensified with the 11-speed cassette, producing nearly double the tension on the drive side spokes. Generally high and low tension spokes have respectively tendency toward breaking down and coming loose spoke nipples. Unbalanced tension affects durability and strength. The OPTBAL design rebalances spoke tension, enhancing wheel rigidity and strength for a more durable wheel.