Felt IA FRD Ultimate Dura-Ace Di2 vs Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2

Compare Specifications of Felt IA FRD Ultimate Dura-Ace Di2 and Specialized S-Works Tarmac SL8 - Shimano Dura-Ace Di2

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Felt IA FRD Ultimate Dura-Ace Di2
Felt IA FRD Ultimate Dura-Ace Di2

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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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Model:

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Technical Specifications
Drivetrain 2x11-speed --
Frame Felt IntegratedAero Disc 1.0 UHC Ultimate + TeXtreme carbon fiber S-Works Tarmac SL8 FACT 12r Carbon, Rider First Engineered™, Win Tunnel Engineered, Clean Routing, Threaded BB, 12x142mm thru-axle, flat-mount disc
Stem Felt Dagger Direct SuperLite aluminum Roval Rapide Cockpit, Integrated Bar/Stem
Handle Bar Basebar: Devox Dagger Direct UHC Ultimate + Nano / Extensions: Devox ƒ-Bend | carbon fiber, 3-position Roval Rapide Cockpit, Integrated Bar/Stem
Fork Felt IntegratedAero Disc 1.0 - Dagger UHC Ultimate + TeXtreme carbon fiber --
Seatpost Felt Aero TRI IL 1.0 VM | UHC Advanced + TeXtreme carbon fiber S-Works Tarmac SL8 Carbon seat post, FACT Carbon, 15mm offset
Grip Felt Dimpled gel pads, Felt VelvetGel tape, and Felt bar end plugs Supacaz Super Sticky Kush
Crankset Shimano Dura-Ace R9100, 52/36T Shimano Dura-Ace R9200, HollowTech II, 12-speed with 4iiii Precision Pro dual-sided powermeter
Chain Shimano Dura-Ace HG901 Shimano Dura-Ace, 12-speed
Shifters Basebar: Shimano Dura-Ace Di2 R9180, TRI/TT / Extensions: Shimano Dura-Ace Di2 SW-R9160, TRI/TT --
Saddle ISM PS1.0 Ti Body Geometry S-Works Power, carbon fiber rails, carbon fiber base
Headset IS (IS-2) --
Derailleur Front Shimano Dura-Ace R9150 Di2, braze-on Shimano Dura-Ace R9250, braze-on
Derailleur Rear Shimano Dura-Ace R9150 Di2, short cage Shimano Dura-Ace R9250, 12-speed
Cassette Shimano Dura-Ace R9100, 11-28T Shimano Dura-Ace, 12-speed, 11-30t
Chainrings -- 52/36T
Bottom Bracket CeramicSpeed BSA for Shimano Road Shimano Dura-Ace, BB-R9200
Tyres
Front Continental Grand Prix 5000 TL, 700 x 25c S-Works Turbo Rapidair 2BR, 700x26mm
Rear Continental Grand Prix 5000 TL, 700 x 25c S-Works Turbo Rapidair 2BR, 700x26mm
Wheel / RIM ZIPP 454/858 NSW Carbon Tubeless Disc-brake, SRAM/Shimano 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
Tube -- Turbo Ultralight, 60mm Front, 80mm Rear, Presta valve
Brakes
Front Disc, Flat Mount 140 mm minimum rotor Shimano Dura-Ace R9270, hydraulic disc
Rear Disc, Flat Mount 25 mm thickness, 140 mm minimum rotor Shimano Dura-Ace R9270, hydraulic disc
Brake Lever Shimano Dura-Ace R9180, TRI/TT, hydraulic 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


Physical Specs
Length -- --
Weight 9.02 kg 6.62 kg
Handlebar Width 420 --
Overview
Features -- --
Additional Details Sizes : 5 | 48, 51, 54, 56, 58cm
Derailleur Hanger Type Front : Brazed-On integrated backup plate, non-replaceable, aluminum
Derailleur Hanger Type Rear : Standard Mount | TA 12x142 TRI/TT, horizontal, replaceable, aluminum
Protector Type : Steerer stop integration for head tube protection / Felt ChainPlate for chain suck protection / Clear vinyl for chain slap protection
Head-Tube Type : Felt Aero 1.125"
Routing Type : Semi-Hidden convertible for electronic or mechanical
Brake Calipers : Shimano Dura-Ace R9170, hydraulic disc, flat mount
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Which one do you think is better? And why?
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