Specialized Sirrus X 3.0 vs Trek Speed Concept

Load Carrying Capacity	--	Combined weight of bicycle, rider, and cargo of 275 pounds (125 kg)
Frame	Specialized A1 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, Plug + Play rack/fender mounts	500 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, BB90, Speed Fin compatible, DuoTrap compatible, SC Draft Box 2 & SC Speed Box 2 compatible
Stem	3D-forged alloy, 31.8mm, 7-degree rise	Size : S - Bontrager Speed Concept, direct mount, 69 mm rise, 67 mm reach Size : S, M, L, XL - Bontrager Speed Concept, direct mount Size : M, L, XL - Bontrager Speed Concept, direct mount, 61 mm rise, 110 mm reach
Handle Bar	Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm	Bontrager Speed Concept KVF aero bar, carbon, direct mount, UCI legal
Fork	A1 Premium Aluminum, flat-mount disc, Plug + Play fender mounts, low rider rack mounts	SC full foil carbon, integrated brake & stem
Seatpost	Alloy, 12mm offset, 2-bolt clamp, 27.2mm	Size : S - Bontrager Speed Concept Race Lite, alloy, +/-20 mm offset, 275 mm length Size : M, L, XL - Bontrager Speed Concept Race Lite, alloy, +/-20 mm offset, 335 mm length
Grip	Specialized Neutralizer, Body Geometry, locking grip	Bontrager tape
Crankset	Forged aluminum arms, 24mm spindle, Narrow-wide steel chainring 40t, chainguard	Size : S - Shimano Ultegra R8000, 50/34 (compact), 165 mm length Size : M - Shimano Ultegra R8000, 50/34 (compact), 170 mm length Size : L - Shimano Ultegra R8000, 50/34 (compact), 172.5 mm length Size : XL - Shimano Ultegra R8000, 50/34 (compact), 175 mm length
Pedals	Specialized Body Geometry Fitness, platform, plastic	--
Chain	KMC X9, 9-speed w/ Missing Link™	Shimano Ultegra HG701, 11-speed
Shifters	MicroSHIFT SL-M9295, 9-speed	Shimano Dura-Ace, bar end, 11 speed
Saddle	Bridge Sport, Steel rails, 155/143mm	Bontrager Hilo Comp, hollow chromoly rails
Headset	--	Integrated, sealed bearings
Derailleur Front	--	Shimano Ultegra R8000, braze-on
Derailleur Rear	microSHIFT Advent, 1x9 w/ clutch	Shimano Ultegra R8000, short cage, 30T max cog
Hub Front	Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h	--
Hub Rear	Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h	--
Spoke	Stainless, 14g	--
Cassette	microSHIFT Advent, 9-speed, 11-42t	Shimano Ultegra R8000, 11-28, 11 speed
Chainrings	40T	50/34 (compact)
Bottom Bracket	Threaded BSA 68mm	Trek BB90

Front	Pathfinder Sport, 700x42	Bontrager R2 Hard-Case Lite, aramid bead, 60 tpi, 700 x 25c
Rear	Pathfinder Sport, 700x42	Bontrager R2 Hard-Case Lite, aramid bead, 60 tpi, 700 x 25c
Wheel / RIM	700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h	Front : Bontrager Aeolus Comp, OCLV Carbon, Tubeless Ready, 100 x 5 mm QR Rear : Bontrager Aeolus Comp, OCLV Carbon, Tubeless Ready, Shimano 11-speed freehub, 130 x 5 mm QR
Tube	Standard 40mm PV 700x32-50	--

Front	Tektro HD-R280, hydraulic disc, 160 mm rotor	Bontrager Speed Limit integrated, Bontrager Race Lite aero levers
Rear	Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm	Bontrager Speed Limit integrated, Bontrager Race Lite aero levers
Brake Lever	--	Bontrager Race Lite aero

Front	--	--
Rear	--	--

Colors

Gloss Birch / Satin Taupe Reflective Satin Maroon / Black / Satin Black Reflective Gloss Metallic Obsidian / Satin Black Reflective

Viper Red / Trek White Crystal White/Blue Matte Onyx Carbon Matte/Gloss Trek Black

Length	--	--
Weight	11.4 kg	9.09 kg

Features

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- KVF tube shape - Ultra-clean front end - Fast build, easy adjustment - 500 series OCLV - Integrated speed storage