Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2 vs Trek Loft 7i Step-Thru

Compare Specifications of Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2 and Trek Loft 7i Step-Thru

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 Loft 7i Step-Thru
Trek Loft 7i Step-Thru

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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 w/ patented Flat Foot Technology
Stem Roval Rapide Cockpit, Integrated Bar/Stem Steel 25.4 mm quill
Handle Bar Roval Rapide Cockpit, Integrated Bar/Stem Alloy custom bend 30 mm rise
Fork -- High-tensile steel unicrown, straight/tapered leg
Seatpost S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset Alloy micro-adjust 27.2 mm x 300 mm
Grip Supacaz Super Sticky Kush Hand-stitched leatherette
Crankset Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision Pro dual-sided powermeter Forged alloy, 170 mm w/44T, alloy chainguard
Pedals -- Alloy platform w/non-slip rubber tread
Chain Shimano Dura-Ace, 12-speed KMC Z7 nickel plated
Shifters -- Shimano Revo 7-speed twist shifter
Saddle Body Geometry S-Works Power, carbon fiber rails, carbon fiber base Retro leatherette dual spring
Headset -- 1" steel threaded
Derailleur Front Shimano Dura-Ace R9250, braze-on --
Derailleur Rear Shimano Dura-Ace R9250, 12-speed --
Hub Front -- Shimano Nexus 7-speed internal F/W 32h
Hub Rear -- Alloy 32h, nutted
Cassette Shimano Dura-Ace, 12-speed, 11-30t 20T
Chainrings 52/36T --
Bottom Bracket Shimano Dura-Ace, BB-R9200 Sealed cartridge 68 mm/116 mm
Tyres
Front S-Works Turbo Rapidair 2BR, 700x26mm 700 x 35c City tread
Rear S-Works Turbo Rapidair 2BR, 700x26mm 700 x 35c City tread
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
Double-wall alloy, 700c x 32h
Tube Turbo Ultralight, 60mm Front, 80mm Rear, Presta valve --
Brakes
Front Shimano Dura-Ace R9270, hydraulic disc Alloy dual pivot caliper
Rear Shimano Dura-Ace R9270, hydraulic disc Alloy dual pivot caliper
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
Green Tea
Blizzard Blue
Matte Hazel


Physical Specs
Length -- --
Weight 6.62 kg 14.74 kg
Overview
Features -- - Flat Foot Technology
- Internal Gear System
Additional Details -- Painted fenders
Loft alloy rear rack
Ring lock mounts
Dual water bottle/accessory mounts
Alloy kickstand
Stainless steel and anti-rust hardware

Which one do you think is better? And why?
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