Shimano Dura Ace R9170 C40, Tubeless Clincher, Disc-brake Wheelset | Daily Deal

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Shimano Dura Ace R9170 C40 Clincher Tubeless Wheelset


Aerodynamics performance and improved drive rigidity.

Most advanced component group of all time: The Shimano Dura Ace WH-R9170-C40-Tubeless Clincher Rim, Disc-brake Wheelset

Two forces combine to slow down riders: air drag and inertia. DURA-ACE R9100 wheels are designed to combat these forces through aerodynamic features and reduced rolling resistance. Two new 28mm wide C60 and C40 rim platforms bring a stiffer wheel to enhance forward and side-to-side (lateral) power transfer and, with ultra-light carbon rim heights of 60mm and 40mm, are also designed to reduce air resistance. This allows Dura Ace R9170 C60 wheels, in a real world scenario, to save 16W over Shimano’s current DURA-ACE 9000 C50 wheelset. C24 wheels complete the DURA-ACE lineup giving riders three rim heights to choose from (60mm, 40mm and 24mm). Selected wheels are available as tubular or tubeless clincher rims with road E-thru axles (12mm).

Engineered for the next generation of race bike, DURA-ACE R9100 offers top-tier performance across numerous configurations. Available with either Di2 electronic or mechanical shifting, for the first time, riders now have the option of premium DURA-ACE hydraulic disc brake performance. New Shimano technologies further integrate the DURA-ACE as a system, including a new power meter, while riders further integrate with their bike through new E-Tube wireless connectivity. Shimano’s Rider Tuned philosophy and customization of the bicycle’s function also expands with a wider range drivetrain that now includes intuitive Shimano Synchro Shift control.
  • Responsive acceleration
  • Improved drive rigidity
  • OPTBAL spoke system
  • Lightweight within rigid
  • Ultra-light full carbon enforced rim
  • Efficient drive train
  • Best all-round wheelset
  • Balanced low inertia & aerodynamics
  • Wide section rim


  • Aerodynamics performance
  • D2 rim, 40mm
  • Improved drive rigidity
  • Wide flange hub + offset rim
  • Lightweight within rigid
  • Road E-THRU 12mm
  • Ultra-light full Carbon rim
  • Efficiant drive train
  • For the performance driven triathlete and road racer
  • Balanced low inertia & aerodynamics
  • Wide section rim
  • Disc brake system
  • Disc brake system


  • Rim: Carbon
  • Hub: Aluminum
  • Freehub: Titanium
  • Spokes: Stainless steel
  • Nipples: Aluminum


  • Black


  • 608g (front)
  • 709g (rear)


Spoke Finish Black
Wheel Size 700c
Rim Material Carbon
Optibal 2 1 X,-
Average Weight 626g,774g,R(856g),F(707g)
Butted Spokes X
Freehub Body Material Titanium
Number Of Spokes 24,24/24
Axel Material F-Aluminum/R-Aluminum,Aluminum
Speeds 10*/11
Offset Rim X,-
Rim Width 24,28
Front Rear Pair Rear,Front,Pair
Nipple Finish Black
Nipple Material Aluminum
Disc Mount Center Lock Disc,-
Axel Fixing Method QR,12mm E-Thru
Free hub seal type -,Contact
Tire Type Tubeless Clincher
Hub seal type Contact
Rim Height 37
Rim Finish Painted
Rim Joint Sleeve,-
Series Dura-Ace
Generation Dura-Ace R9170,Dura-Ace R9100
Bladed Spokes X
Spoke Material Stainless Steel
Brake Type Center Lock Disc
O L D 100,100/142,142
Recommended Tire Size 23-32c


  • 1 x Dura Ace WH-R9170-C40-Tubeless Clincher Rim, Disc-brake Wheelset
  • 2 x Quick release
  • 2 x Valve extension
  • 2 x Spoke wrench
  • 1 x Adapter 11-speed


OPTBAL Spoke System
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.

Shimano DURA-ACE R9100 (Di2)

Developing the new DURA-ACE R9100 series - Episode 1 from Ride Shimano on Vimeo.