Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2 vs Viathon G.1 GRX 800

Compare Specifications of Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2 and Viathon G.1 GRX 800

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Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2
Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2

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Viathon G.1 GRX 800
Viathon G.1 GRX 800

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Technical Specifications
Drivetrain -- Shimano GRX 800 1X11 drivetrain
Frame S-Works Tarmac SL8 FACT 12r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc VIATHON G.1 GRAVEL FRAME
Stem Roval Rapide Cockpit, Integrated Bar/Stem ZIPP SERVICE COURSE SL B1 31.8 MM, 6°, 110 MM
Handle Bar Roval Rapide Cockpit, Integrated Bar/Stem ZIPP SERVICE COURSE SL-70
Fork -- VIATHON G.1 GRAVEL FORK
Seatpost S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset ZIPP SERVICE COURSE SL C1, 27.2 MM, 400 MM
Grip Supacaz Super Sticky Kush --
Crankset Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision Pro dual-sided powermeter SHIMANO GRX 800 FC-RX810-1, HOLLOWTECH 2, 42T
Chain Shimano Dura-Ace, 12-speed SHIMANO CN-HG701-11, 11-SPEED
Shifters -- SHIMANO GRX 800 BR-RX810, DISC BRAKE
Gear -- 46T 1x or 50/34T 2x gearing
Saddle Body Geometry S-Works Power, carbon fiber rails, carbon fiber base SELLE ITALIA NOVUS BOOST MAG
Derailleur Front Shimano Dura-Ace R9250, braze-on --
Derailleur Rear Shimano Dura-Ace R9250, 12-speed SHIMANO GRX 800 RD-RX812, 11-SPEED, SHADOW
Cassette Shimano Dura-Ace, 12-speed, 11-30t SHIMANO XT CS-M8000, 11-SPEED, 11-42T
Chainrings 52/36T --
Bottom Bracket Shimano Dura-Ace, BB-R9200 SHIMANO SM-BBR60
Tyres
Front S-Works Turbo Rapidair 2BR, 700x26mm IRC BOKEN, 700 X 40, FOLDING
Rear S-Works Turbo Rapidair 2BR, 700x26mm IRC BOKEN, 700 X 40, FOLDING
Wheel / RIM Front: Roval Rapide CLX II, Tubeless, 21mm internal width carbon rim, 51mm depth, Win Tunnel Engineered, Roval AFD hub, 18h, DT Swiss Aerolite spokes
Rear: Roval Rapide CLX II, Tubeless, 21mm internal width carbon rim, 60mm depth, Win Tunnel Engineered, Roval AFD hub, 24h, DT Swiss Aerolite spokes
MERCURY G1C DISC, CENTER LOCK, SHIMANO 11-SPEED
Tube Turbo Ultralight, 60mm Front, 80mm Rear, Presta valve --
Brakes
Front Shimano Dura-Ace R9270, hydraulic disc SHIMANO SM-RT800, 160 MM, W/LOCK RING
Rear Shimano Dura-Ace R9270, hydraulic disc SHIMANO SM-RT800, 160 MM, W/LOCK RING
Brake Lever Shimano Dura-Ace R9270, hydraulic disc SHIMANO GRX 800 BR-RX810, DISC BRAKE
Suspension
Front S-Works FACT 12r Carbon, 12x100mm thru-axle, flat-mount disc --
Rear -- --
Colors Available
Colors Satin Fog Tint / Green Ghost Pearl / Red Ghost Pearl Fade
Satin Carbon / Viavi Cynan Blue / Viavi Silver-Blue Pearl Fade / Gloss Metallic White Silver
Copper Silver
Silver


Physical Specs
Length -- --
Weight 6.62 kg --
Overview
Features -- - Drop seat stays and flattened rear tubing mute road chatter
- Internal cable routings resist dust and grime
- Durable threaded bottom bracket adds serviceability
- Nimble and wide Mercury G1C carbon disc brake wheels for max tire contact
- Zipp handlebars for steering control and comfort
- Mounts for three water bottles
Additional Details -- Sizes : 52, 54, 56, 58, 60
Front Hub Axle : SHIMANO E-THRU AXLE 100X12MM
Rear Axle : SHIMANO E-THRU AXLE 142X12MM
Inner Tubes : KENDA 700C
Bar Tape : FIZIK BLACK

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