Aluminium hardtail mountain bike Trek Procaliber 8 Eagle 70 sage green: marathon XC, 120 mm fork, 13.73 kg

Trek Procaliber 8 Desert Sage: cut out for long distances

Intended for long rides as well as marathons, the Trek Procaliber 8 brings together an Alpha Platinum aluminium frame, a 120 mm Recon Gold RL fork and a SRAM Eagle 70 T-Type 1x12 drivetrain, for 13.73 kg in a size M according to Trek. Its Shimano hydraulic brakes use one 180 mm and one 160 mm rotor. The Desert Sage colour is a light sage green, with hints of dry vegetation.

Technical specifications

Who is it for?

For the endurance mountain biker who clocks up 60 km or more on rolling routes, from the Haut-Languedoc to the shores of the Salagou, and wants a reliable bike that is easy to live with over time. It will also suit riders who want to move from a leisure mountain bike to a proper race hardtail.

The LVR workshop view

Alpha Platinum: a refined aluminium. In Trek's hierarchy of alloys, Platinum sits above the Alpha Silver of the Marlins and below the Alpha NEXT Platinum reserved for the latest-generation Fuels. The Procaliber 8 shares this frame with the Procaliber 6: cables routed through the tubes, a creak-free 73 mm BSA threaded bottom bracket, hidden kickstand and rack mounts, and a UDH universal derailleur hanger. Trek also says it now makes almost all of its aluminium frames from low-carbon metal.

Put simply: on this Procaliber 8, Trek replaces the Shimano groupset with a SRAM Eagle 70 T-Type, with a 10-52 cassette and a derailleur that mounts on the UDH standard. The claimed weight rises to 13.73 kg in M; here you choose a modern, robust drivetrain rather than a featherweight bike.

Over long distances, the cockpit matters as much as the frame: from ML to XL, the 750 mm Rhythm Comp handlebar with 15 mm rise offers a slightly more upright position that relieves the shoulders, and the Blendr-compatible stem neatly holds a GPS computer. The Trek Line Comp lock-on grips are easy to swap for a more ergonomic model.

The Shimano MT410 hydraulic brakes run on mineral oil, which makes bleeding simple and inexpensive in the workshop. On a marathon, their modulation lets you stay in control on long descents without tensing your hands; at the end of the season, we check pad wear.

Which Procaliber should you choose?

Our take: for long distances, the carbon Procaliber 9.5 adds IsoBow, which filters vibrations better as the hours go by, for 1 kg less with the Fox fork (12.73 kg). This Procaliber 8 remains the only way to get a T-Type drivetrain on an alloy Procaliber frame.

Your questions

Why buy from LVR Cycles? In Béziers, we prepare your Procaliber 8 before marathons: drivetrain service, brake bleed, tubeless set-up and fork adjustment.

Please note that the specifications may be changed without prior notice by the manufacturer, based on the availability of components and other factors.