Bike Comparison
    MSRP
    $3,500
    $3,499
    $3,300
    Where to Buy
    $3,500

    At Specialized

    $3,499

    At Trek

    $3,499

    At Biloxi Bicycle Works

    See more

    $3,300

    At Giant

    Category
    EnduranceEnduranceEndurance
    Weight
    20.0 lbs19.7 lbs
    4.5
    4.7
    4.7
    CarbonCarbonCarbon
    Fork
    CarbonCarbonCarbon
    Wheels
    AluminumAluminumAluminum
    Wheel Size
    700c700c700c
    Clearance
    38c38c38c
    Brakes
    Hydraulic DiscHydraulic DiscHydraulic Disc
    Groupset
    105105105, Shimano
    Drivetrain
    2 × 122 × 112 × 12
    Brand Site

    specialized.com

    trekbikes.com

    giant-bicycles.com

    Summary
    The Specialized Roubaix SL8 Sport 105, Trek Domane SL 5 Gen 4, and Giant Defy Advanced 2 are all carbon frame endurance bikes with upper mid-range components and hydraulic disc brakes.
    Similar Bikes
    Accessories
    Ride Feel

    Based on frame geometry and build specs.

    Rider Position
    relaxedaggressive
    Terrain
    smoothrugged
    2024 Roubaix SL8 Sport 105
    2023 Domane SL 5 Gen 4
    2024 Defy Advanced 2
    Other Endurance bikes
    Gear Range

    A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

    Lowest gear

    (climbing)

    39 mph

    2024 Roubaix SL8 Sport 105

    39 mph

    2023 Domane SL 5 Gen 4

    39 mph

    2024 Defy Advanced 2

    Highest gear

    (descending)

    Spec Level

    Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

    Geometry
    Specs
    Frame

    FACT 10R, Rider First Engineered™ (RFE), FreeFoil Shape Library tubes, threaded BB, 12x142mm thru-axle, flat-mount disc

    BB StandardBSA, 68mm, Threaded

    Tire Clearance38c

    ColorsSatin Metallic Sapphire / Blue Onyx; Satin Metallic Obsidian / Birch; Gloss Birch / White Mountains/abalone

    500 Series OCLV Carbon, IsoSpeed, internal storage, tapered head tube, internal cable routing, 3S chain keeper, fender mounts, flat mount disc, 142x12mm thru axle

    BB StandardBSA, 68mm, Threaded

    Tire Clearance38c

    ColorsSatin Metallic Sapphire / Blue Onyx; Satin Metallic Obsidian / Birch; Gloss Birch / White Mountains/abalone

    Advanced-grade composite, disc

    BB StandardBSA, 68mm, Threaded

    Tire Clearance38c

    ColorsSatin Metallic Sapphire / Blue Onyx; Satin Metallic Obsidian / Birch; Gloss Birch / White Mountains/abalone

    Fork

    Future Shock 3.1 w/ Smooth Boot, FACT Carbon 12x100mm, thru-axle, flat-mount disc

    Domane SL carbon, tapered carbon steerer, internal brake routing, fender mounts, flat mount disc, 12x100mm thru axle

    Advanced-grade composite, full-composite steerer, disc

    Shock

    N/A

    Bottom Bracket

    Shimano BSA

    Praxis, T47 threaded, internal bearing

    Shimano, press fit

    Stem

    Future Stem Comp

    Size: 44, Trek RCS Pro, -7 degree, 60mm length; Size: 47, Trek RCS Pro, -7 degree, 70mm length; Size: 50, Trek RCS Pro, -7 degree, 80mm length; Size: 52, 54, Trek RCS Pro, -7 degree, 90mm length; Size: 56, 58, Trek RCS Pro, -7 degree, 100mm length; Size: 60, 62, Trek RCS Pro, -7 degree, 110mm length

    Giant Contact Aero Light XS:80mm, S:90mm, M:100mm, M/L:100mm, L:110mm, XL:110mm

    Handlebar

    Specialized Hover Comp, Alloy, 125mm Drop, 75mm Reach w/Di2 Hole

    Size: 44, 47, Bontrager Elite IsoZone VR-SF, alloy, 31.8mm, internal Di2 routing, 75mm reach, 128mm drop, 36cm width; Size: 50, Bontrager Elite IsoZone VR-SF, alloy, 31.8mm, internal Di2 routing, 75mm reach, 128mm drop, 38cm width; Size: 52, Bontrager Elite IsoZone VR-SF, alloy, 31.8mm, internal Di2 routing, 75mm reach, 128mm drop, 40cm width; Size: 54, 56, Bontrager Elite IsoZone VR-SF, alloy, 31.8mm, internal Di2 routing, 75mm reach, 128mm drop, 42cm width; Size: 58, 60, 62, Bontrager Elite IsoZone VR-SF, alloy, 31.8mm, internal Di2 routing, 75mm reach, 128mm drop, 44cm width

    Giant Contact SL D-Fuse XS:40cm, S:40cm, M:42cm, M/L:42cm, L:44cm, XL:44cm

    Saddle

    Body Geometry Power Sport, steel rails

    Size: 44, 47, 50, 52, Bontrager Verse Short Comp, steel rails, 155mm width; Size: 54, 56, 58, 60, 62, Bontrager Verse Short Comp, steel rails, 145mm width

    Giant Approach

    Seatpost

    S-Works Pave Seat post

    Size: 44, 47, 50, 52, 54, 56, KVF aero carbon seatpost, 20mm offset, 280mm length; Size: 58, 60, 62, KVF aero carbon seatpost, 20mm offset, 320mm length

    Giant D-Fuse, composite, 14mm offset

    Pedals

    PEDAL, TEST RIDE PEDALS PROVIDED BY SPECIALIZED

    N/A

    Grips

    Stratus Lite 3.0

    Groupset
    Rear Derailleur

    Shimnao 105 R7100, 12-Speed

    Shimano 105 R7000, long cage, 34T max cog

    Shimano 105

    Front Derailleur

    Shimano 105 R7100, braze-on

    Shimano 105 R7000, braze-on

    Shimano 105

    Crank

    Shimano 105, 12-Speed, 50/34T

    Size: 44, 47, Shimano 105 R7000, 50/34 (compact), 165mm length; Size: 50, 52, Shimano 105 R7000, 50/34 (compact), 170mm length; Size: 54, 56, Shimano 105 R7000, 50/34 (compact), 172.5mm length; Size: 58, 60, 62, Shimano 105 R7000, 50/34 (compact), 175mm length

    Shimano FC-RS520, 34/50 XS:170mm, S:170mm, M:172.5mm, M/L:172.5mm, L:175mm, XL:175mm

    Shifters

    Shimano 105 R7120, Hydraulic Disc

    Size: 44, 47, 50, 52, Shimano 105 R7025, short-reach lever, 11 speed; Size: 54, 56, 58, 60, 62, Shimano 105 R7020, 11 speed

    Shimano 105

    Cassette

    Shimano 105, 12-speed, 11-36T

    Shimano 105 HG700-11, 11-34, 11 speed

    Shimano 105, 11x36

    Chain

    Shimano 105, 12-Speed

    Shimano 105 HG601, 11 speed

    KMC X12L-1

    Brakes

    Front: Shimano 105 Hydraulic Disc, Rear: Shimano 105 Hydraulic Disc

    Shimano 105 hydraulic disc, flat mount

    Shimano 105 hydraulic, Giant MPH rotors [F]160mm, [R]160mm

    Brake Levers

    Shimano 105

    Wheels
    Rims

    Front: DT Swiss G540 rim, 24mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples, Rear: DT Swiss G540 rim, 24mm internal width, tubeless ready, 24h, Specialized full sealed bearing thru axle hub, centerlock disc, DT Swiss Champion 14G stainless steel spokes, DT Swiss brass nipples

    Bontrager Paradigm SL, Tubeless Ready, 24-hole, 21mm width, Presta valve

    Giant P-R2 Disc wheelset, alloy

    Spokes

    14 g stainless steel, black

    Sapim stainless

    Front Hub

    Bontrager alloy, sealed bearing, centerlock disc, 100x12mm thru axle

    Giant alloy, 12mm thru-axle

    Rear Hub

    Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142x12mm thru axle

    Giant alloy, 12mm thru-axle

    Tires

    Front: S-Works Mondo 2BR, 700x32c, Rear: S-Works Mondo 2BR, 700x32c

    Bontrager R3 Hard-Case Lite, Tubeless Ready, aramid bead, 120 tpi, 700x32mm

    Giant Gavia Fondo 1, tubeless, 700x32c (33.5mm), folding

    Disc Rotors

    Shimano RT70, centerlock, 160mm

    Accessories
    Fenders

    Compatible with RGX 38 fender (sold separately)

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