Cannondale CAAD Optimo 3 vs Trek Marlin 4

Load Carrying Capacity	--	Combined weight of bicycle, rider, and cargo of 300 pounds (136 kg)
Frame	SmartForm C2 Alloy, SAVE, tapered headtube, fender mounts, 130x10mm QR	Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135 x 5 mm QR
Stem	6061 Alloy, 31.8, 7 degree	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	6061 Alloy, Compact	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	CAAD Optimo Full Carbon, 1-1/8" to 1-1/4" steerer, fender mounts, 100x9mm QR	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	Cannondale 4, 6061 Alloy, 27.2x350mm	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	Cannondale Bar Tape, 3.5mm	Bontrager XR Endurance Comp, lock-on
Crankset	FSA Vero Alloy, 50/34	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	--	VP-536 nylon platform
Chain	KMC X9, 9-speed	KMC Z7, 7 speed
Shifters	Shimano Sora, 9-speed	Shimano Altus EF500, 7 speed
Saddle	Cannondale Stage CX	Bontrager Arvada, steel rails, 138 mm width
Headset	CAAD Optimo, 1-1/8" to 1-1/4", 25mm top cap	Semi-integrated, 1-1/8''
Derailleur Front	Shimano Sora, 31.8 clamp	Shimano Tourney TY300, 34.9 mm clamp, down swing, down pull
Derailleur Rear	Shimano Sora GS	Shimano Tourney TY300, long cage, 34T max cog
Hub Front	Formula RB-31	Formula DC-31, alloy, 6-bolt, 6/7/8 speed freewheel, 135 x 5 mm QR
Hub Rear	Formula RB-32	Formula DC-20, alloy, 6-bolt, 5 x 100 mm QR
Spoke	Stainless Steel, 14g	14g stainless steel
Cassette	Shimano HG50, 11-30, 9-speed	Shimano TZ500, 14-28, 7 speed
Chainrings	--	1x/2x : 34T, 3x : 42T
Bottom Bracket	Cartridge, square taper	VP BC73, 73 mm, threaded cartridge

Front	Vittoria Zaffiro, 700x25c	Bontrager XR2 Comp, wire bead, 30 tpi, 29 x 2.20''
Rear	Vittoria Zaffiro, 700x25c	Bontrager XR2 Comp, wire bead, 30 tpi, 29 x 2.00''
Wheel / RIM	RS 3.0, 24h front, 28h rear	Bontrager Connection, double-wall, 32-hole, 20 mm width, schrader valve

Front	Promax RC-452, dual pivot calipers	Tektro MD-M280 mechanical disc, 160 mm rotor
Rear	Promax RC-452, dual pivot calipers	Tektro MD-M280 mechanical disc, 160 mm rotor
Brake Lever	Shimano Sora	--

Front	--	--
Rear	--	--

Colors

Black

Matte Trek Black Voodoo Aloha Green Matte Anthracite Magenta

Length	--	--
Weight	--	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)