Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2 vs Surly Lowside

Compare Specifications of Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2 and Surly Lowside

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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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Surly Lowside
Surly Lowside

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Model:

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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 Surly Lowside Frame
4130 Chromoly, Natch tubing, double-butted main triangle, TIG welded, E.D. coated
Stem Roval Rapide Cockpit, Integrated Bar/Stem Sunday Freeze top load 22.2mm clamp
Handle Bar Roval Rapide Cockpit, Integrated Bar/Stem Surly Sunrise
Fork -- Surly Lowside Fork
4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated
Seatpost S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset 2 Bolt, 30.9mm
Clamp: Surly Stainless 33.1mm clamp
Grip Supacaz Super Sticky Kush Velo Black
Crankset Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision Pro dual-sided powermeter SRAM NX 32t
Chain Shimano Dura-Ace, 12-speed KMC X10
Saddle Body Geometry S-Works Power, carbon fiber rails, carbon fiber base Selle Italia Black
Headset -- Cane Creek
Derailleur Front Shimano Dura-Ace R9250, braze-on --
Derailleur Rear Shimano Dura-Ace R9250, 12-speed --
Hub Front -- Novatec 15x110
Hub Rear -- Novatec 12x148
Cassette Shimano Dura-Ace, 12-speed, 11-30t --
Chainrings 52/36T --
Bottom Bracket Shimano Dura-Ace, BB-R9200 SRAM PS
Tyres
Front S-Works Turbo Rapidair 2BR, 700x26mm Maxxis Rekon+ 27.5x2.8 60tpi
Rear S-Works Turbo Rapidair 2BR, 700x26mm Maxxis Rekon+ 27.5x2.8 60tpi
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
Rims: WTB ST i35 TCS
Tube Turbo Ultralight, 60mm Front, 80mm Rear, Presta valve --
Brakes
Front Shimano Dura-Ace R9270, hydraulic disc Tektro Hydro M275/276
Rear Shimano Dura-Ace R9270, hydraulic disc Tektro Hydro M275/276
Brake Lever Shimano Dura-Ace R9270, hydraulic disc Tektro
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
Dream Tangerine


Physical Specs
Length -- --
Weight 6.62 kg --
Overview
Features -- Gnot-Boost rear spacing, thru-axles.
Internal dropper post routing compatible.
Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though).
Additional Details -- Size:
XS - SM - MD - LG - XL
Rotors: Tektro 160/160mm
Cog or cogset: Surly 17t w/ spacer kit

Which one do you think is better? And why?
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