Trek Fuel EX 9.8 29 vs Trek Marlin 4

Load Carrying Capacity	--	Combined weight of bicycle, rider, and cargo of 300 pounds (136 kg)
Frame	OCLV Mountain Carbon main frame & seatstay, alloy chainstay, ABP, Boost148, Knock Block steerer stop, Full Floater, EVO link, tapered head tube, Mino Link, Control Freak internal routing, Carbon Armor, PF92, ISCG 05, G2 Geometry, 130mm travel	Alpha Silver Aluminum, internal routing, chainstay disc brake mount, rack and kickstand mount, 135 x 5 mm QR
Stem	Bontrager Line Pro, Knock Block, 35 mm clamp, 0 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	Bontrager Line Pro, OCLV Carbon, 35 mm, 15 mm rise, 750 mm 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	Fox Performance 34 Float, GRIP 3-position damper, tapered steerer, G2 Geometry w/51 mm offset, Boost110, 130 mm travel	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	Bontrager Line, internal routing, 31.6 mm, 15.5-inch size: 100 mm, 17.5-inch & 18.5-inch sizes: 125 mm, 19.5-inch & 21.5-inch sizes: 150 mm	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 XR Trail Elite, alloy lock-on	Bontrager XR Endurance Comp, lock-on
Crankset	Truvativ Descendant 7k Eagle DUB	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	SRAM GX Eagle	KMC Z7, 7 speed
Shifters	SRAM GX Eagle, 12 speed	Shimano Altus EF500, 7 speed
Saddle	Bontrager Arvada, austenite rails	Bontrager Arvada, steel rails, 138 mm width
Headset	Knock Block Integrated, sealed cartridge bearing, 1-1/8-inch top, 1.5-inch bottom	Semi-integrated, 1-1/8''
Derailleur Front	--	Shimano Tourney TY300, 34.9 mm clamp, down swing, down pull
Derailleur Rear	SRAM GX Eagle, Roller Bearing Clutch	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	SRAM XG-1275 Eagle, 10-50, 12 speed	Shimano TZ500, 14-28, 7 speed
Chainrings	32 T Direct Mount	1x/2x : 34T, 3x : 42T
Bottom Bracket	--	VP BC73, 73 mm, threaded cartridge

Front	Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, 120tpi, aramid bead, 29 x 2.40	Bontrager XR2 Comp, wire bead, 30 tpi, 29 x 2.20''
Rear	Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, 120tpi, aramid bead, 29 x 2.40	Bontrager XR2 Comp, wire bead, 30 tpi, 29 x 2.00''
Wheel / RIM	Bontrager Line Carbon 30, Tubeless Ready, 54T Rapid Drive, Boost110 front, Boost148 rear, tubeless strips included, valves sold separately	Bontrager Connection, double-wall, 32-hole, 20 mm width, schrader valve

Front	Shimano SLX M7000 hydraulic disc	Tektro MD-M280 mechanical disc, 160 mm rotor
Rear	Shimano SLX M7000 hydraulic disc	Tektro MD-M280 mechanical disc, 160 mm rotor

Front	--	--
Rear	Rear Shock : Fox Performance Float EVOL, RE:aktiv with Thru Shaft 3-position damper, tuned by Trek Suspension Lab, 210 x 52.5 mm	--

Colors

Gloss Purple Phaze / Matte Trek Black Matte Gravel / Quicksilver Radioactive Orange / Trek Black Viper Red / Trek White Volt / Solid Charcoal

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	Axles Front : 15 x 110 mm Rear : 12 x 148 mm Bottom Bracket : SRAM DUB Press Fit, 92 mm	Max compatible fork travel : 100 mm (XS & S: 490 mm axle-to-crown, M & up: 509 mm axle-to-crown)