Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2 vs Trek Straight 8 8i

Compare Specifications of Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2 and Trek Straight 8 8i

Selected Bikes

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

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Trek Straight 8 8i
Trek Straight 8 8i

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Technical Specifications
Load Carrying Capacity -- Combined weight of bicycle, rider, and cargo of 300 pounds (136 kg)
Frame S-Works Tarmac SL8 FACT 12r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc 6061-T6 aluminum with hydroformed top tube and patented Flat Foot Technology
Stem Roval Rapide Cockpit, Integrated Bar/Stem Threadless 4-bolt
Handle Bar Roval Rapide Cockpit, Integrated Bar/Stem Electra attitude
Fork -- Steel unicrown straight blade
Seatpost S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset Classic alloy pillar
Grip Supacaz Super Sticky Kush Electra custom
Crankset Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision Pro dual-sided powermeter Electra custom alloy 3-piece
Pedals -- Alloy platform
Chain Shimano Dura-Ace, 12-speed KMC S1 nickel plated
Shifters -- Shimano Revo 8-speed twist with optical gear display
Saddle Body Geometry S-Works Power, carbon fiber rails, carbon fiber base Electra low profile with double-coil springs
Headset -- 1 1/8" steel threadless
Derailleur Front Shimano Dura-Ace R9250, braze-on --
Derailleur Rear Shimano Dura-Ace R9250, 12-speed --
Hub Front -- Shimano Nexus internal 8-speed with coaster brake 36h
Hub Rear -- Alloy low-flange with 6-bolt disc, 36h
Cassette Shimano Dura-Ace, 12-speed, 11-30t 20T
Chainrings 52/36T 44T steel chainring
Bottom Bracket Shimano Dura-Ace, BB-R9200 Sealed cartridge
Tyres
Front S-Works Turbo Rapidair 2BR, 700x26mm Electra Fatti-O 24 x 3.0"
Rear S-Works Turbo Rapidair 2BR, 700x26mm Electra Fatti-O 24 x 3.0"
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
Painted alloy
Tube Turbo Ultralight, 60mm Front, 80mm Rear, Presta valve --
Brakes
Front Shimano Dura-Ace R9270, hydraulic disc Mechanical disc
Rear Shimano Dura-Ace R9270, hydraulic disc Shimano coaster brake
Brake Lever Shimano Dura-Ace R9270, hydraulic disc --
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
Black Satin


Physical Specs
Length -- --
Weight 6.62 kg 17.27 kg
Overview
Features -- - Flat Foot Technology
- Internal Gear System
Additional Details -- Painted stubby rear fender
Stainless steel and anti-rust hardware
8-ball valve caps

Which one do you think is better? And why?
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