Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2 vs Trek 520 Disc

Compare Specifications of Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2 and Trek 520 Disc

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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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Trek 520 Disc
Trek 520 Disc

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Technical Specifications
Frame S-Works Tarmac SL8 FACT 12r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc Trek butted chromoly disc touring, rack & fender mounts
Stem Roval Rapide Cockpit, Integrated Bar/Stem Bontrager Elite, 31.8 mm, 7 degree, Blendr compatible
Handle Bar Roval Rapide Cockpit, Integrated Bar/Stem Bontrager Race VR-C, 31.8 mm
Fork -- Chromoly touring disc with lowrider mounts
Seatpost S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset Bontrager SSR, 2-bolt head, 27.2 mm, 12 mm offset
Grip Supacaz Super Sticky Kush Bontrager Gel Cork
Crankset Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision Pro dual-sided powermeter Shimano Trekking M590
Pedals -- Nylon platform with cages
Chain Shimano Dura-Ace, 12-speed KMC X9
Shifters -- Shimano Dura-Ace handlebar-end
Saddle Body Geometry S-Works Power, carbon fiber rails, carbon fiber base Bontrager Evoke 1
Headset -- VP Slimstak, sealed semi-cartridge bearings
Derailleur Front Shimano Dura-Ace R9250, braze-on Shimano Alivio
Derailleur Rear Shimano Dura-Ace R9250, 12-speed Shimano Deore
Hub Front -- Shimano M475
Hub Rear -- Shimano M475
Cassette Shimano Dura-Ace, 12-speed, 11-30t --
Chainrings 52/36T 48 / 36 / 26 with chainguard
Bottom Bracket Shimano Dura-Ace, BB-R9200 --
Tyres
Front S-Works Turbo Rapidair 2BR, 700x26mm Bontrager AW1 Hard-Case, 700 x 32 c
Rear S-Works Turbo Rapidair 2BR, 700x26mm Bontrager AW1 Hard-Case, 700 x 32 c
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
Bontrager Tubeless Ready 36-hole
Tube Turbo Ultralight, 60mm Front, 80mm Rear, Presta valve --
Brakes
Front Shimano Dura-Ace R9270, hydraulic disc Hayes CX Expert mechanical disc
Rear Shimano Dura-Ace R9270, hydraulic disc Hayes CX Expert mechanical disc
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
Cosmic Black


Physical Specs
Length -- --
Weight 6.62 kg --
Overview
Features -- - You'll feel the difference: nothing rides like a Trek
- Low touring mounts front and rear stabilize heavy loads
- Disc brakes give you all-weather stopping power
- Balanced geometry is ultra-stable even when fully loaded
Additional Details -- Bottom Bracket : Sealed cartridge
Rear Cogs : Shimano HG50, 11-32, 9 speed

Which one do you think is better? And why?
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