Trek Rail 9.5 Gen 4

Trek’s 2023 “Rail 9.5 Gen 4” model is a high-quality e-mountain bike designed for discerning riders. Priced at 6,499 EUR, this model offers a wide range of technical features and a robust build. The main frame is made from OCLV Mountain Carbon and features a low top tube that is compatible with the Bosch System Controller. The frame is also fitted with a removable integrated battery (RIB), Knock Block 2.0, guided internal cable routing, a 34.9 mm seat tube diameter and a magnesium shift lever. The Armor motor provides additional protection for the drivetrain.

The bike’s maximum permissible weight is 136 kg, whilst its kerb weight is 25 kg. The brakes consist of Tektro HD-M745 hydraulic 4-piston disc brakes at both the front and rear, each with a 203 mm brake disc and a 6-hole disc mount. Gear changes are controlled via the Shimano Deore M6100 shifter with 12 speeds. The RockShox 35 Gold RL fork offers 160 mm of travel and is fitted with a DebonAir spring and Motion Control damping.

The bike is fitted with VP-536 nylon platform pedals and an ethirteen espec Plus crankset with a crank arm length of 165 mm. The cassette is a SunRace CSMZ800 with a 11–51-tooth range, also offering 12 speeds. The handlebars are made of aluminium, are 750 mm wide and have a 15 mm rise. The grips are Bontrager XR Trail Comp with nylon clamps, and the stem is a Bontrager Rhythm Comp with Knock Block and a length of 50 mm.

The tyres are Bontrager XR4 Comp with a wire bead, a TPI of 30 and dimensions of 29 x 2.60. The wheelset consists of Alex MD35 rims, which are tubeless-compatible, and Bontrager hubs with sealed bearings and aluminium axles. The saddle is a Bontrager Arvada with steel rails and a width of 138 mm, whilst the seatpost is a TranzX JD-YSI-22PLQ with a 170 mm travel and internal cable routing.

The bike’s battery is a Bosch PowerTube with a capacity of 750 Wh, supported by a Bosch standard charger rated at 4 A and 230 V. The bike’s geometry features a reach of 49 mm, a stack of 64 mm, a seat tube length of 45 mm, a top tube length of 64 mm, a head tube angle of 65 degrees, a seat tube angle of 71 degrees, a head tube length of 12 mm, a chainstay length of 45 mm, a standover height of 77 mm and a wheelbase of 128 mm.

Overall, the Rail 9.5 Gen 4 is a well-equipped e-mountain bike that impresses with its high-quality build and well-thought-out features. It is ideal for challenging rides, whilst offering a high level of comfort and safety.