Specialized Sirrus X 3.0 vs Trek Checkpoint ALR 4

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	300 Series Alpha Aluminum, tapered head tube, Control Freak internal routing, 3S chain keeper, rack and fender mounts, flat mount disc, horizontal sliding dropouts, 142 x 12 mm thru axle
Stem	3D-forged alloy, 31.8mm, 7-degree rise	Size : 49 - Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree, 80 mm length Size : 52, 54 - Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree, 90 mm length Size : 56, 58 - Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree, 100 mm length Size : 61 - Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree, 110 mm length
Handle Bar	Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm	Size : 49 - Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 38cm width Size : 52 - Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 40cm width Size : 54, 56 - Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 42cm width Size : 58, 61 - Bontrager Elite IsoZone VR-CF, alloy, 31.8 mm, 93 mm reach, 123 mm drop, 44cm width
Fork	A1 Premium Aluminum, flat-mount disc, Plug + Play fender mounts, low rider rack mounts	Checkpoint carbon, tapered alloy steerer, rack mounts, fender mounts, flat mount disc, 12 x 100 mm thru axle
Seatpost	Alloy, 12mm offset, 2-bolt clamp, 27.2mm	Bontrager Comp, 6061 alloy, 27.2 mm, 8 mm offset, 330 mm length
Grip	Specialized Neutralizer, Body Geometry, locking grip	--
Crankset	Forged aluminum arms, 24mm spindle, Narrow-wide steel chainring 40t, chainguard	Size : 49 - Shimano GRX RX600, 46/30, 165 mm length Size : 52 - Shimano GRX RX600, 46/30, 170 mm length Size : 54, 56 - Shimano GRX RX600, 46/30, 172.5 mm length Size : 58, 61 - Shimano GRX RX600, 46/30, 175 mm length
Pedals	Specialized Body Geometry Fitness, platform, plastic	--
Chain	KMC X9, 9-speed w/ Missing Link™	KMC X10
Shifters	MicroSHIFT SL-M9295, 9-speed	Shimano GRX RX400, 10 speed
Saddle	Bridge Sport, Steel rails, 155/143mm	Bontrager Montrose Comp, steel rails, 138 mm width
Headset	--	FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom
Derailleur Front	--	Shimano GRX RX400, braze-on
Derailleur Rear	microSHIFT Advent, 1x9 w/ clutch	Shimano GRX RX400, long cage, 36T max cog
Hub Front	Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h	Bontrager alloy, sealed bearing, centerlock disc, Shimano 11-speed freehub, 142 x 12 mm thru axle
Hub Rear	Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h	Bontrager alloy, sealed bearing, centerlock disc, 100 x 12 mm thru axle
Spoke	Stainless, 14g	14g stainless steel
Cassette	microSHIFT Advent, 9-speed, 11-42t	Shimano Tiagra HG500, 11-34, 10 speed
Chainrings	40T	--
Bottom Bracket	Threaded BSA 68mm	Shimano RS500, 86mm, PressFit

Front	Pathfinder Sport, 700x42	Bontrager GR1 Comp, wire bead, 60 tpi, 700 x 40c
Rear	Pathfinder Sport, 700x42	Bontrager GR1 Comp, wire bead, 60 tpi, 700 x 40c
Wheel / RIM	700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h	Bontrager Tubeless Ready, 28-hole, 17 mm width, presta valve
Tube	Standard 40mm PV 700x32-50	--

Front	Tektro HD-R280, hydraulic disc, 160 mm rotor	Shimano RX400 hydraulic disc, flat mount Brake Rotor : Shimano SM-RT70, centerlock, 160 mm
Rear	Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm	Shimano RX400 hydraulic disc, flat mount Brake Rotor : Shimano SM-RT70, centerlock, 160 mm

Front	--	--
Rear	--	--

Colors

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

Rage Red Dark Aquatic

Length	--	--
Weight	11.4 kg	10.26 kg

Features

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- Horizontal Sliding Dropout - 300 Series Alpha Aluminium