Trek Madone SL 6 vs Trek Marlin 4

Load Carrying Capacity	Combined weight of bicycle, rider, and cargo of 275 pounds (125 kg)	Combined weight of bicycle, rider, and cargo of 300 pounds (136 kg)
Frame	500 Series OCLV Carbon, KVF (Kammtail Virtual Foil) tube shape, adjustable top tube IsoSpeed, invisible cable routing, 3S aero chain keeper, flat mount disc, Duo Trap S compatible, 142 x 12 mm thru axle	Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135 x 5 mm QR
Stem	Size : 50 - Bontrager Pro, 31.8 mm, Blendr compatible, 7 degree, 80 mm length Size : 52, 54 - Bontrager Pro, 31.8 mm, Blendr compatible, 7 degree, 90 mm length Size : 56, 58 - Bontrager Pro, 31.8 mm, Blendr compatible, 7 degree, 100 mm length Size : 60, 62 - Bontrager Pro, 31.8 mm, Blendr compatible, 7 degree, 110 mm length	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	Size : 50, 52 - Bontrager Elite Aero VR-CF, alloy, 31.8 mm, invisible cable routing, 93 mm reach, 123 mm drop, 40cm width Size : 54, 56 - Bontrager Elite Aero VR-CF, alloy, 31.8 mm, invisible cable routing, 93 mm reach, 123 mm drop, 42cm width Size : 58, 60, 62 - Bontrager Elite Aero VR-CF, alloy, 31.8 mm, invisible cable routing, 93 mm reach, 123 mm drop, 44cm width	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	Madone KVF full carbon, tapered carbon steerer, invisible cable routing, flat mount disc, carbon dropouts, 12 x 100 mm thru axle	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	Size : 50, 52, 54, 56 - Madone aero carbon internal seatmast cap, integrated light mount, 25 mm offset, short length Size : 58, 60, 62 - Madone aero carbon internal seatmast cap, integrated light mount, 25 mm offset, tall length	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	Bontrager tape	Bontrager XR Endurance Comp, lock-on
Crankset	Size : 50, 52 - Shimano Ultegra R8000, 50/34 (compact), 170 mm length Size : 54, 56 - Shimano Ultegra R8000, 50/34 (compact), 172.5 mm length Size : 58, 60, 62 - Shimano Ultegra R8000, 50/34 (compact), 175 mm length	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	Shimano Ultegra HG701, 11-speed	KMC Z7, 7 speed
Shifters	Shimano Ultegra R8020, 11-speed	Shimano Altus EF500, 7 speed
Saddle	Bontrager Aeolus Comp, steel rails, 145 mm width	Bontrager Arvada, steel rails, 138 mm width
Headset	Madone integrated, stainless cartridge bearings, sealed, 1-3/8 top, 1.5 bottom	Semi-integrated, 1-1/8''
Derailleur Front	Shimano Ultegra R8000, braze-on	Shimano Tourney TY300, 34.9 mm clamp, down swing, down pull
Derailleur Rear	Shimano Ultegra R8000, short cage, 30T max cog	Shimano Tourney TY300, long cage, 34T max cog
Hub Front	--	Formula DC-31, alloy, 6-bolt, 6/7/8 speed freewheel, 135 x 5 mm QR
Hub Rear	--	Formula DC-20, alloy, 6-bolt, 5 x 100 mm QR
Spoke	--	14g stainless steel
Cassette	Shimano Ultegra R8000, 11-30, 11 speed	Shimano TZ500, 14-28, 7 speed
Chainrings	50 / 34	1x/2x : 34T, 3x : 42T
Bottom Bracket	Trek BB90	VP BC73, 73 mm, threaded cartridge

Front	Bontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700 x 25c	Bontrager XR2 Comp, wire bead, 30 tpi, 29 x 2.20''
Rear	Bontrager R3 Hard-Case Lite, aramid bead, 120 tpi, 700 x 25c	Bontrager XR2 Comp, wire bead, 30 tpi, 29 x 2.00''
Wheel / RIM	Front : Bontrager Aeolus Comp, Tubeless Ready, 18 mm rim width, 100 x 12 mm thru axle Rear : Bontrager Aeolus Comp Disc, Tubeless Ready, 18 mm rim width, 142 x 12 mm thru axle	Bontrager Connection, double-wall, 32-hole, 20 mm width, schrader valve

Front	Shimano Ultegra hydraulic disc, flat mount Brake Rotor : Shimano RT800, centerlock, 160 mm	Tektro MD-M280 mechanical disc, 160 mm rotor
Rear	Shimano Ultegra hydraulic disc, flat mount Brake Rotor : Shimano RT800, centerlock, 160 mm	Tektro MD-M280 mechanical disc, 160 mm rotor

Front	--	--
Rear	--	--

Colors

Black/Quicksilver Radioactive Red/Trek Black

Matte Trek Black Voodoo Aloha Green Matte Anthracite Magenta

Length	--	--
Weight	8.62 kg	13.98 kg

Features	- 500 Series OCLV - KVF Tube Shape - Madone IsoSpeed Decoupler	- 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)