Trek Domane AL 2 Gen 3 vs Trek Domane AL 4 Disc

Load Carrying Capacity	--	Combined weight of bicycle, rider, and cargo of 275 pounds (125 kg)
Frame	100 Series Alpha Aluminium, tapered head tube, internal routing, mudguard mounts, DuoTrap S-compatible, flat-mount disc, 142x12 mm thru axle	100 Series Alpha Aluminum, tapered head tube, internal routing, fender mounts, DuoTrap S compatible, flat mount disc, 142 x 12 mm thru axle
Stem	Size: 44 Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 70 mm length 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	Size : 44 - Bontrager Elite, 31.8 mm, Blendr compatible, 7 degree, 70 mm length 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	Size: 44, 49 Bontrager Comp VR-S, alloy, 31.8 mm, 81 mm reach, 118 mm drop, 38 cm width Size: 52 Bontrager Comp VR-S, alloy, 31.8 mm, 81 mm reach, 118 mm drop, 40 cm width Size: 54, 56 Bontrager Comp VR-C, alloy, 31.8 mm, 100 mm reach, 124 mm drop, 42 cm width Size: 58, 61 Bontrager Comp VR-C, alloy, 31.8 mm, 100 mm reach, 124 mm drop, 44 cm width	Size : 44, 49 - Bontrager Comp VR-S, alloy, 31.8 mm, 81 mm reach, 118 mm drop, 38cm width Size : 52 - Bontrager Comp VR-S, alloy, 31.8 mm, 81 mm reach, 118 mm drop, 40cm width Size : 54, 56 - Bontrager Comp VR-C, alloy, 31.8 mm, 100 mm reach, 124 mm drop, 42cm width Size : 58, 61 - Bontrager Comp VR-C, alloy, 31.8 mm, 100 mm reach, 124 mm drop, 44cm width
Fork	Size: 44, 49, 52, 54, 56, 58, 61 Domane AL carbon, tapered alloy steerer, internal brake routing, fender mounts, flat mount disc, 12x100mm thru axle	Domane AL carbon, tapered alloy steerer, internal brake routing, fender mounts, flat mount disc, 12 x 100 mm thru axle
Seatpost	Size: 44, 49 Bontrager Comp, 6061 alloy, 27.2 mm, 8 mm offset, 250 mm length Size: 52, 54, 56, 58, 61 Bontrager Comp, 6061 alloy, 27.2 mm, 8 mm offset, 330 mm length	Size : 44, 49 - Bontrager Comp, 6061 alloy, 27.2 mm, 8mm offset, 250 mm length Size : 52, 54, 56, 58, 61 - Bontrager Comp, 6061 alloy, 27.2 mm, 8 mm offset, 330 mm length
Crankset	Size: 44 Shimano RS200, 50/34 (compact), 165 mm length Size: 49, 52, 54 Shimano RS200, 50/34 (compact), 170 mm length Size: 56, 58, 61 Shimano RS200, 50/34 (compact), 175 mm length	Size : 44 - Shimano Tiagra 4700, 50/34, 165 mm length Size : 49, 52 - Shimano Tiagra 4700, 50/34, 170 mm length Size : 54, 56 - Shimano Tiagra 4700, 50/34, 172.5 mm length Size : 58, 61 - Shimano Tiagra 4700, 50/34, 175 mm length
Chain	Shimano Sora HG71, 8 speed	Shimano Tiagra HG54, 10 speed
Shifters	Size: 44, 49, 52, 54, 56, 58, 61 Shimano Claris ST-R2000-R, 8 speed, right Size: 44, 49, 52, 54, 56, 58, 61 Shimano Claris ST-R2000-L, 8 speed, left	Shimano Tiagra R4725, short reach lever, 10 speed
Saddle	Size: 44, 49, 52 Bontrager Verse Comp, steel rails, 155 mm width Size: 54, 56, 58, 61 Bontrager Verse Comp, steel rails, 145 mm width	Size : 44, 49, 52 - Bontrager P3 Verse Comp, steel rails, 155 mm width Size : 54, 56, 58, 61 - Bontrager P3 Verse Comp, steel rails, 145 mm width
Headset	FSA Integrated, sealed cartridge bearing, 1-1/8" top, 1.5" bottom	FSA Integrated, sealed cartridge bearing, 1-1/8'' top, 1.5'' bottom
Derailleur Front	Shimano Claris R2000, 31.8 mm clamp	Shimano Tiagra 4700, 31.8 mm clamp
Derailleur Rear	Shimano Claris R2000, medium cage, 34T max cog	Shimano Tiagra 4700, long cage, 34T max cog
Hub Front	Formula RX-512 alloy, 6-bolt, 100x12 mm thru axle	Formula RX-142 alloy, 6-bolt, Shimano 11-speed freehub, 142 x 12 mm thru axle
Hub Rear	Formula RX-142 alloy, 6-bolt, Shimano 11-speed freehub, 142x12 mm thru axle	Formula RX-512 alloy, 6-bolt, 100 x 12 mm thru axle
Spoke	--	14g stainless steel
Cassette	Shimano HG31, CS-HG31, 11-32, 8 speed	Shimano HG500, 11-32, 10 speed
Chainrings	1x: 42T, 2x: 50/34	--
Bottom Bracket	Shimano UN300, 68 mm, threaded cartridge, 110 mm spindle	Shimano RS500, 68 mm, threaded external

Front	Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32 mm	Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700 x 32c
Rear	Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32 mm	Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700 x 32c
Wheel / RIM	Size: 44, 49, 52, 54, 56, 58, 61 Bontrager Affinity Disc, Tubeless Ready, 24-hole, 21 mm width, Presta valve Size: 44, 49, 52, 54, 56, 58, 61 Bontrager Paradigm SL, Tubeless Ready, 24-hole, 21 mm width, Presta valve Size: 44, 49, 52, 54, 56, 58, 61 Bontrager Paradigm, Tubeless Ready, 24-hole, 21 mm width, Presta valve	Bontrager Affinity Disc, Tubeless Ready, 24-hole, 21 mm width, presta valve

Front	Tektro C550 mechanical disc brake, dual piston, flat-mount, 160 mm rotor	Shimano Tiagra hydraulic disc Brake Rotor : Shimano RT66, 160 mm, 6-bolt
Rear	Tektro C550 mechanical disc brake, dual piston, flat-mount, 160 mm rotor	Shimano Tiagra hydraulic disc Brake Rotor : Shimano RT66, 160 mm, 6-bolt

Front	--	--
Rear	--	--

Colors

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Gloss Trek Black/Matte Trek Black Gloss Radioactive Red/Matte Black Era White/Carbon Smoke

Length	--	--
Weight	10.76 kg	10.48 kg

Features

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- Rack Mounts - Endurance Fit - Endurance Geometry - Fender Compatible - Additional Tire Clearance