Co-Motion Robusta vs Viathon R.1 Dura-Ace

Compare Specifications of Co-Motion Robusta and Viathon R.1 Dura-Ace

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Co-Motion Robusta
Co-Motion Robusta

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Viathon R.1 Dura-Ace
Viathon R.1 Dura-Ace

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Technical Specifications
Frame Co-Motion exclusive ACMUltra7 7005 aluminum zonally-butted tandem tubing VIATHON R.1 ROAD FRAME
Stem FSA SL-K and Co-Motion adj. stoker stem ZIPP SERVICE COURSE SL B1, 31.8MM, 6°, 110 MM
Handle Bar -- ZIPP SL-70 ERGO CARBON
Fork Co-Motion Carbon T390 Disc VIATHON R.1 ROAD FORK
Seatpost -- ZIPP SL CARBON B1, 0 OFFSET, 27.2 MM, 330 MM
Crankset -- SHIMANO DURA-ACE FC-R9100, HOLLOWTECH2, 50-34T
Chain -- SHIMANO CN-HG901, 11-SPEED
Shifters Shimano Ultegra R8000 2x11-speed SHIMANO DURA-ACE ST-R9120, DISC BRAKE
Saddle Co-Motion 31.6 mm / Selle Italia Nekkar & Lady Flow FIZIK ANTARES R1
Headset Cane Creek 110 Tapered --
Derailleur Front Shimano Ultegra R8000 2x11-speed SHIMANO DURA-ACE FD-R9100, DOWN-SWING, BRAZED-ON TYPE
Derailleur Rear Shimano Ultegra R8000 2x11-speed SHIMANO DURA-ACE RD-R9100, 11-SPEED, SHADOW
Cassette Shimano 11-34t cassette SHIMANO DURA-ACE CS-R9100, 11-SPEED, 11-30
Bottom Bracket -- ROTOR PRESS FIT 30TO24 CONVERTER
Tyres
Front Continental Gatorskin 700 x 28 mm CONTINENTAL GRAND PRIX 5000 TL 700 X 25 BLACK + BLACK CHILI
Rear Continental Gatorskin 700 x 28 mm CONTINENTAL GRAND PRIX 5000 TL 700 X 25 BLACK + BLACK CHILI
Wheel / RIM Rolf Prima Tandem Alloy HED VANQUISH 4GP CARBON DISC
Brakes
Front TRP Spyre w/ 203 mm disc rotors SHIMANO SM-RT900, 160 MM, W/LOCK RING
Rear TRP Spyre w/ 203 mm disc rotors SHIMANO SM-RT900, 160 MM, W/LOCK RING
Brake Lever -- SHIMANO DURA-ACE ST-R9120, DISC BRAKE
Suspension
Front -- --
Rear -- --
Colors Available
Colors -- Copper
Silver


Physical Specs
Length -- --
Overview
Features - Modern derailleur drive trains are lightweight, smooth operating and very efficient
- Ultegra R8000 is the newest iteration of Shimano's most popular road component group
- Compact 50/34t cranks and wide cassette offers a generous gear range
- Shimano Ultegra R8000 kit offers a 27" low, 122.7" high gear
- Shimano Dura-Ace, the benchmark in shifting speed and accuracy
- HED Vanquish 4GP carbon wheels for winning aerodynamics
- Internal cable routings reduce aerodynamic drag
- Zipp SL carbon handlebar for steering precision and seatpost for comfort
Additional Details Drivetrain : Co-Motion Compact Tandem Cranks 50-34t / Gates Timing Belt /
Cockpit : FSA Omega compact and Co-Motion stoker bar
Sizes : 52, 54, 56, 57.5, 59
Front Axle : SHIMANO E-THRU AXLE 100X12MM
Rear Axle : SHIMANO E-THRU AXLE 142X12MM
Inner Tubes : KENDA 23/25C
Bar Tape : FIZIK WHITE

Which one do you think is better? And why?
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