Trek Domane AL 4 Gen 4 Bike (2026)

Trek Domane AL 4 Gen 4 Road Bike in Black. Trek Reference: 5301516

The Domane AL 4 Gen 4 is a versatile, fast, and comfortable road bike, perfect for getting started in road cycling or enjoying long rides. Its 100 Series Alpha Aluminum frame offers lightness and durability, while the carbon fork improves vibration absorption. With a 10-speed Shimano Tiagra drivetrain and clearance for wider tires, it's a bike ready to ride on asphalt or even venture onto most light gravel roads.

It's ideal for you if...

You want a reliable and versatile road bike for group rides, training, or quick commutes. The Domane's comfortable geometry and accessory mounts make it an excellent choice for both road and off-road adventures.

The technology inside

A 100 Series Alpha Aluminum frame with internal cable routing and fender mounts, a Domane AL carbon fork for added comfort, a reliable and precise Shimano Tiagra 2x10 drivetrain, and Bontrager Paradigm SL tubeless-ready wheels with 32mm tires for safe and comfortable riding on multiple surfaces.

The final word

The Domane AL 4 Gen 4 is ideal if you're looking for a versatile and affordable bike to get started with road cycling. It offers a great combination of comfort, reliability, and adaptability so you can enjoy every ride.

Specifications

Frameset

• Frame: 100 Series Alpha Aluminum, tapered head tube, internal routing, fender mounts, flat mount disc, UDH, 142x12mm thru axle
• Fork: Domane AL carbon, tapered carbon steerer, internal brake routing, fender mounts, flat mount disc, 12x100mm thru axle

Weight

• Weight: Size 56 – 10.35 kg
• Weight Limit: This bike has a maximum combined weight limit (bike, rider, and load) of 125 kg

Transmission

• Shifter: Shimano Tiagra R4720, 10-speed
• Front Derailleur: Shimano Tiagra 4700, 31.8 mm clamp
• Rear Derailleur: Shimano Tiagra 4700, long cage, max. 34T
• Bottom bracket: Shimano Tiagra 4700, 50/34, length 172.5 mm (size 56)
• Bottom bracket: Shimano RS501 BSA
• Cassette: Shimano 10 speed, 11-32T
• Chain: Shimano Tiagra HG54, 10 speeds
• Maximum chainring size: 1x: 50D, 2x: 50/34

Wheels

• Front hub: Formula RX-512, alloy, 6 bolts, 100x12 mm thru axle
• Rear hub: Formula RX-142, alloy, 6 bolts, Shimano 11-speed hub, axle 142x12mm thru axle
• Front skewer: Bontrager Switch beveled thru axle
• Rear skewer: Bontrager Switch beveled thru axle, removable lever
• Rims: Bontrager Paradigm SL, Tubeless Ready, 24-hole, 21mm internal
• Spokes: 14g stainless steel, black
• Tires: Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32mm

Components

• Saddle: Bontrager Verse Short, steel rails, 145mm width
• Seatpost: Bontrager Comp, 6061 alloy, 27.2mm offset, 8mm offset, 330mm length mm (size 56)
• Handlebar: Bontrager Comp, alloy, 31.8 mm, 80 mm offset, 121 mm drop, 42 cm lever width, 46 cm handlebar width (size 56)
• Bar Tape: Bontrager Supertack Perf
• Stem: Bontrager Elite, 31.8 mm, Blendr compatible, 7-degree, 100 mm drop (size 56)
• Brakes: Shimano Tiagra hydraulic, flat mount
• Rotors: Shimano RT66, 6-bolt, 160 mm
• Maximum Rotor Size: 160 mm front and rear