Trek Rail 9.8 XT Gen 4

The "Rail 9.8 XT Gen 4" model from Trek, released in 2024, is a state-of-the-art e-mountain bike that stands out for its outstanding technical specifications and high-quality components. Priced at 9,999 EUR, it is aimed at discerning riders who value both performance and quality.

The frame of the Rail 9.8 XT Gen 4 is made from OCLV Mountain Carbon, ensuring an optimal combination of lightness and stability. The main frame features a 1.8" lower top tube and is compatible with the Bosch System Controller. The Removable Integrated Battery (RIB) allows for easy handling and maintenance of the battery. Other features of the frame include the Knock Block 2.0, guided internal cable routing, a 34.9 mm seat tube diameter, a magnesium shift lever and the Motor Armor.

The bike’s maximum load capacity is 136 kg, whilst its kerb weight is 23 kg. This ensures that the bike remains stable and reliable even under demanding conditions.

For the brakes, Trek has opted for Shimano XT M8120 hydraulic 4-piston disc brakes at both the front and rear, combined with Shimano RT76 brake discs featuring a 6-hole mounting pattern and a diameter of 203 mm. This configuration ensures excellent braking performance in all conditions.

The gear system consists of the Shimano XT M8100 12-speed shifter, whilst the fork is a RockShox ZEB Select+ with DebonAir spring and Charger 3 RC2 damping. This fork is specially optimised for e-MTBs and offers 160 mm of travel.

Other notable components include the VP-536 nylon platform pedals, the ethirteen espec Plus crankset with a crank arm length of 165 mm, and the Shimano XT M8100 cassette with a 10–51-tooth range.

The handlebars are Bontrager Line Pro made from OCLV carbon, with a width of 780 mm and a rise of 27.5 mm. The grips are Bontrager XR Trail Elite with nylon clamps. The stem is also a Bontrager Line Pro, measuring 45 mm in length and featuring Knock Block and Blendr compatibility.

The tyres are Bontrager SE5 Team Issue and SE6 Team Issue, both tubeless-ready with Core Strength sidewall protection and an aramid bead core, in size 29 x 2.50. The wheelset consists of Bontrager Line Comp 30 rims, which are also Tubeless Ready and feature a 6-hole disc mount.

The saddle is a Bontrager Arvada with austenitic rails and a width of 138 mm, whilst the seatpost is a Bontrager Line Elite Dropper with a 200 mm travel.

The bike is powered by a Bosch Performance Line CX motor with a Smart System and a torque of 85 Nm. The battery has a capacity of 750 Wh and is charged using a standard 4 A Bosch charger. The display is the Bosch System Controller BRC3100.

Overall, the Trek Rail 9.8 XT Gen 4 offers an impressive combination of advanced technology and high-quality components, making it an excellent choice for ambitious mountain bikers.