Felt AR Advanced Ultegra DI2 vs Specialized Sirrus X 3.0

Compare Specifications of Felt AR Advanced Ultegra DI2 and Specialized Sirrus X 3.0

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Felt AR Advanced Ultegra DI2
Felt AR Advanced Ultegra DI2

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Specialized Sirrus X 3.0
Specialized Sirrus X 3.0

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Technical Specifications
Frame TeXtreme carbon fiber, MMC with InsideOut construction, carbon fiber BB386 bottom bracket shell, 12 x 142 mm Syntace style thru axle, flat mount disc brake standard, aluminum replaceable rear derailleur hanger, internal electronic-specific cable routing, and high-frequency vibration reducing seat post insert Specialized A1 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, Plug + Play rack/fender mounts
Stem AR integrated carbon with internal cable and hose routing -6¡ rise, ¯31.8 mm, 48 - 51 cm: 90 mm, 54 - 56 cm: 100 mm, 58 cm: 110 mm, 61 cm: 120 mm 3D-forged alloy, 31.8mm, 7-degree rise
Handle Bar Devox Carbon Aero, 80 mm reach, 125 mm drop, ¯31.8 mm, 48 - 54 cm: 400 mm, 56 - 61 cm: 420 mm Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm
Fork Felt Aero Road UHC Advanced + TeXtreme carbon fiber monocoque construction, AeroTaper 1.125" - 1.25" carbon fiber steerer tube, integrated crown race, crown and blades. Flat mount disc standard, 12 x 100 mm thru axle A1 Premium Aluminum, flat-mount disc, Plug + Play fender mounts, low rider rack mounts
Seatpost Felt VariMount Aero Road UHC Advanced + TeXtreme carbon fiber with high-frequency vibration reducing insert, integrated battery holder, 350 mm length*, 0/20 mm offset *Seatpost can be cut to length Alloy, 12mm offset, 2-bolt clamp, 27.2mm
Grip -- Specialized Neutralizer, Body Geometry, locking grip
Crankset Shimano Ultegra R8000, 52/36T, 48 cm: 165 mm, 51 cm: 170 mm, 54 - 56 cm: 172.5 mm, 58 - 61 cm: 175 mm Forged aluminum arms, 24mm spindle, Narrow-wide steel chainring 40t, chainguard
Pedals -- Specialized Body Geometry Fitness, platform, plastic
Chain Shimano 11-speed KMC X9, 9-speed w/ Missing Link™
Shifters Shimano Ultegra Di2 R8070 11-speed MicroSHIFT SL-M9295, 9-speed
Saddle Prologo Dimension T4.0 Bridge Sport, Steel rails, 155/143mm
Headset FSA integrated sealed cartridge bearings MR121 {870E-RS} Upper bearing and MR168 {970E-RS} lower bearing with integrated aero headset spacers and integrated top cover for use with non-integrated stem --
Derailleur Front Shimano Ultegra R8050 Di2 braze-on --
Derailleur Rear Shimano Ultegra R8050 Di2 11-speed short cage microSHIFT Advent, 1x9 w/ clutch
Hub Front Reynolds Series 1, straight-pull design, 4 pawl, 24T ratchet, 11-speed, 12 x 142 mm thru axle, Center Lock Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h
Hub Rear Reynolds Series 1, straight-pull design, 12 x 100 mm thru axle, Center Lock Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h
Spoke Sapim Sprint bladed Stainless, 14g
Cassette Shimano 11-speed, 11-30T microSHIFT Advent, 9-speed, 11-42t
Chainrings -- 40T
Bottom Bracket -- Threaded BSA 68mm
Tyres
Front Continental Grand Prix 5000 folding, 700 x 25c Pathfinder Sport, 700x42
Rear Continental Grand Prix 5000 folding, 700 x 25c Pathfinder Sport, 700x42
Wheel / RIM Reynolds AR58 DB Custom carbon, tubeless ready, 21 mm inner width, 58 mm depth 700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h
Tube -- Standard 40mm PV 700x32-50
Brakes
Front Shimano BR-R8070 hydraulic disc, 160 mm rotor Tektro HD-R280, hydraulic disc, 160 mm rotor
Rear Shimano BR-R8070 hydraulic disc, 140 mm rotor Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm
Brake Lever Shimano Ultegra R8070, hydraulic --
Suspension
Front -- --
Rear -- --
Colors Available
Colors Aquafresh / TeXtreme
White / TeXtreme (Green)
Gloss Birch / Satin Taupe Reflective
Satin Maroon / Black / Satin Black Reflective
Gloss Metallic Obsidian / Satin Black Reflective


Physical Specs
Length -- --
Weight -- 11.4 kg
Overview
Features -- --
Additional Details Bar Tape : Felt VelvetGel tape with 3 M reflective base with Felt Bubble-Tech F-Wing bar end plugs
Bottom Bracket : Token BB386 with 24 mm bearings
Seatpost Clamp : Felt Internaloc integrated with titanium bolts
Thru Axle : Front: 12 x 100 x 118, thread: M12 x 1.5P x 13L, Maxle; Rear: 12 x 142 x 161 (161L + 9 head = 170 total), thread: M12 x 1.0P x 18L, Syntace
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Accessories - Carbon assembly paste
- Chain plate protector
- Tubeless valve stems
- Aero seatpost slot covers
- Di2 battery charger
- Headset top cover for use with non-integrated stem
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Which one do you think is better? And why?
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