Specialized Sirrus X 3.0 vs Trek Marlin 4

Load Carrying Capacity	--	Combined weight of bicycle, rider, and cargo of 300 pounds (136 kg)
Frame	Specialized A1 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, Plug + Play rack/fender mounts	Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135 x 5 mm QR
Stem	3D-forged alloy, 31.8mm, 7-degree rise	Size : XS - Bontrager alloy, 31.8 mm, Blendr compatible, 7 degree, 50 mm length ( Size : S - 60 mm length) Size : M - Bontrager alloy, 31.8 mm, Blendr compatible, 7 degree, 70 mm length Size : ML, L - Bontrager alloy, 31.8 mm, Blendr compatible, 7 degree, 80 mm length Size : XL, XXL - Bontrager alloy, 31.8 mm, Blendr compatible, 7 degree, 90 mm length
Handle Bar	Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm	Size : XS, S - Bontrager alloy, 31.8 mm, 5 mm rise, 690 mm width Size : M, ML, L, XL, XXL - Bontrager alloy, 31.8 mm, 5 mm rise, 720 mm width
Fork	A1 Premium Aluminum, flat-mount disc, Plug + Play fender mounts, low rider rack mounts	Size : XS - SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5'' wheel, 100 mm QR, 80 mm travel Size : S - SR Suntour XCE 28, coil spring, preload, 42 mm offset for 27.5'' wheel, 100 mm QR, 100 mm travel Size : M, ML, L, XL, XXL - SR Suntour XCE 28, coil spring, preload, 46 mm offset for 29'' wheel, 100 mm QR, 100 mm travel
Seatpost	Alloy, 12mm offset, 2-bolt clamp, 27.2mm	Size : XS, S - Bontrager alloy, 31.6 mm, 12 mm offset, 330 mm length Size : M - Bontrager alloy, 31.6 mm, 12 mm offset, 360 mm length Size : ML, L, XL, XXL - Bontrager alloy, 31.6 mm, 12 mm offset, 400 mm length
Grip	Specialized Neutralizer, Body Geometry, locking grip	Bontrager XR Endurance Comp, lock-on
Crankset	Forged aluminum arms, 24mm spindle, Narrow-wide steel chainring 40t, chainguard	Size : XS, S, M - Shimano Tourney TY301, 42/34/24, 170 mm length Size : ML, L, XL, XXL - Shimano Tourney TY301, 42/34/24, 175 mm length
Pedals	Specialized Body Geometry Fitness, platform, plastic	VP-536 nylon platform
Chain	KMC X9, 9-speed w/ Missing Link™	KMC Z7, 7 speed
Shifters	MicroSHIFT SL-M9295, 9-speed	Shimano Altus EF500, 7 speed
Saddle	Bridge Sport, Steel rails, 155/143mm	Bontrager Arvada, steel rails, 138 mm width
Headset	--	Semi-integrated, 1-1/8''
Derailleur Front	--	Shimano Tourney TY300, 34.9 mm clamp, down swing, down pull
Derailleur Rear	microSHIFT Advent, 1x9 w/ clutch	Shimano Tourney TY300, long cage, 34T max cog
Hub Front	Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h	Formula DC-31, alloy, 6-bolt, 6/7/8 speed freewheel, 135 x 5 mm QR
Hub Rear	Alloy, 6-bolt disc, 8-/9-speed freehub, loose ball bearing, quick-release, 32h	Formula DC-20, alloy, 6-bolt, 5 x 100 mm QR
Spoke	Stainless, 14g	14g stainless steel
Cassette	microSHIFT Advent, 9-speed, 11-42t	Shimano TZ500, 14-28, 7 speed
Chainrings	40T	1x/2x : 34T, 3x : 42T
Bottom Bracket	Threaded BSA 68mm	VP BC73, 73 mm, threaded cartridge

Front	Pathfinder Sport, 700x42	Bontrager XR2 Comp, wire bead, 30 tpi, 29 x 2.20''
Rear	Pathfinder Sport, 700x42	Bontrager XR2 Comp, wire bead, 30 tpi, 29 x 2.00''
Wheel / RIM	700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h	Bontrager Connection, double-wall, 32-hole, 20 mm width, schrader valve
Tube	Standard 40mm PV 700x32-50	--

Front	Tektro HD-R280, hydraulic disc, 160 mm rotor	Tektro MD-M280 mechanical disc, 160 mm rotor
Rear	Tektro HD-R280, hydraulic disc, resin pads, flat-mount, 160mm	Tektro MD-M280 mechanical disc, 160 mm rotor

Front	--	--
Rear	--	--

Colors

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

Matte Trek Black Voodoo Aloha Green Matte Anthracite Magenta

Length	--	--
Weight	11.4 kg	13.98 kg

Features	--	- Rack Mounts - Rear Kickstand Mount - Internal Cable Routing
Additional Details	--	Max compatible fork travel : 100 mm (XS & S: 490 mm axle-to-crown, M & up: 509 mm axle-to-crown)