Trek Domane AL 4 Gen 3

The 2022 Trek Domane AL 4 Gen 3 is a versatile road bike which, at a price of 1,749 EUR, offers a balanced blend of performance and comfort. The frame is made from 100 Series Alpha aluminium and features a tapered head tube, internal cable routing, mudguard mounts and is DuoTrap S-compatible. The flat-mount disc brake mounts and the 142 x 12 mm thru-axle contribute to stability and stiffness. The bike’s maximum load capacity is 125 kg, whilst it weighs 10 kg.

Braking performance is provided by Shimano Tiagra hydraulic disc brakes with 160 mm Shimano RT66 rotors at both the front and rear. Shifting is handled by Shimano Tiagra R4725 shift levers with a reduced grip width and a Shimano Tiagra 4700 front derailleur. The fork is a Domane AL carbon fork with a tapered alloy steerer tube, internal brake routing, mudguard mounts and a 12x100 mm thru-axle.

The crankset is a Shimano Tiagra 4700 with a 50/34 tooth ratio and a length of 172.5 mm. The cassette is a Shimano 10-speed with a range of 11–32 teeth. The drivetrain is completed by a Shimano Tiagra HG54 chain. The handlebars are Bontrager Comp VR-C aluminium handlebars with a width of 42 cm, a reach of 100 mm and a drop of 124 mm. The stem is a Bontrager Elite with a clamp diameter of 31.8 mm, Blendr-compatible, an angle of 7 degrees and a length of 100 mm. The headset is an integrated FSA headset with sealed cartridge bearings.

The tyres are Bontrager R1 Hard-Case Lite with a wire bead, a TPI of 60 and dimensions of 700 x 32C. The wheelset consists of Bontrager Affinity Disc Tubeless Ready rims with an internal width of 21 mm and 24 spoke holes. The hubs are Formula RX-512 at the front and Formula RX-14 at the rear. The saddle is a Bontrager Verse Comp with steel rails and a width of 145 mm, mounted on a Bontrager Comp seatpost made from 6061 aluminium with an 8 mm offset and a length of 330 mm.

The bike’s packaging dimensions are 24 mm wide, 73 mm high and 133 mm long. The frame geometry comprises a reach of 38 mm, a stack of 59 mm, a seat tube length of 52 mm, a top tube length of 55 mm, a head tube angle of 72 degrees, a seat tube angle of 73 degrees, a head tube length of 18 mm, a chainstay length of 42 mm, a stack height of 78 mm and a wheelbase of 102 mm.

The Trek Domane AL 4 Gen 3 therefore offers a robust and comfortable solution for road cyclists looking for reliability and performance.