Trek Domane AL 4 Gen 3

The 2023 "Domane AL 4 Gen 3" model from Trek is a versatile road bike that stands out for its high-quality materials and precision craftsmanship. The frame is made from 100 Series Alpha Aluminium and features a tapered head tube and internal cable routing. Mudguard mounts and DuoTrap S compatibility are also integrated, whilst the flat-mount disc brake mounts and the 142 x 12 mm thru-axle provide additional stability. The bike’s maximum load capacity is 125 kg, whilst it weighs 10 kg.

The braking system consists of Shimano Tiagra hydraulic disc brakes, fitted with Shimano RT66, 6-hole disc mounts and a diameter of 160 mm. The front derailleur is a Shimano Tiagra 4700 with a clamp diameter of 31.8 mm. The fork is a Domane AL carbon fork with a tapered alloy steerer tube, internal brake routing, mudguard mounts, a flat-mount disc brake mount 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 bottom bracket is a Prowheel PW-BB73+ with a 68/73 mm thread and is externally mounted. The cassette is a Shimano 10-speed with a range of 11–32 teeth, whilst the drivetrain is powered by the Shimano Tiagra HG54, also a 10-speed system.

The handlebars are aluminium Bontrager Comp VR-C with a clamp diameter of 31.8 mm, a reach of 100 mm, a drop of 124 mm and a width of 42 cm. The stem is a Bontrager Elite with a clamp diameter of 31.8 mm, Blendr compatibility, an angle of 7 degrees and a length of 100 mm. The headset is an integrated FSA headset with sealed cartridge bearings, 1 1/8" at the top and 1.5" at the bottom.

The wheelset consists of Bontrager Paradigm Tubeless Ready rims with an internal width of 21 mm and a 24-hole configuration. The hubs are Formula RX-512 at the front and Formula RX-142 at the rear, both made of aluminium and fitted with a 6-hole disc mount.

The saddle is a Bontrager Verse Comp with steel rails and a width of 145 mm. The seatpost is a Bontrager Comp made from 6061 aluminium, with a diameter of 27.2 mm, an offset of 8 mm and a length of 330 mm.

The bike’s geometry comprises a reach of 38 mm, a stack of 59 mm, a seat tube length of 52 mm and a top tube length of 55 mm. The head tube angle is 72 degrees, the seat tube angle 73 degrees. The head tube length is 18 mm, the chainstay length is 42 mm and the standover height is 78 mm. The wheelbase measures 102 mm in total.

The Trek Domane AL 4 Gen 3 thus offers a balanced blend of comfort and performance at a price of 1999 EUR. It is ideal for riders looking for a reliable and versatile road bike.