Transition Sentinel: All mountain bike with enduro fetish

Peter Nilges

· 24.10.2024

The new Sentinel provides 160 millimetres at the front and 150 at the rear.

The 64 mm steering angle ensures a smooth ride on rough terrain.

In addition to grey and purple, the Sentinel is also available in white.

Transition attaches great importance to ease of maintenance. The cables therefore do not enter the frame through the headset.

9 Images

Photo: Transition

Even though Transition still has a bigger bike in its model range, the new Sentinel is already hungry for fun, challenging descents. All the details on the All Mountain Bike / Enduro from the USA.

Topics in this article

Even though the design language of the new Transition Sentinel is strongly orientated towards its predecessor, the frame has been redesigned from the ground up. Transition has also worked on the kinematics so that the rear triangle is slightly higher in its travel and has more reserves in the rough stuff. This should allow the new Sentinel to be ridden very actively without compromising its ability to swallow. In terms of geometry, the new bike relies on size-dependent chainstays and a steering angle of 64 degrees. In the basic setup, a 160 mm fork and 150 millimetres of rear travel are available. Optionally, a shock with five millimetres more travel can be fitted, resulting in 160 millimetres at the rear.

Photo: TransitionSchematic of the geometry of the Transition Sentinel

Photo: TransitionGeometry of the Transition Sentinel

Transition Sentinel: storage compartment, flipchip and other gadgets

But thought has also been given to things that provide everyday utility. All carbon frames have a storage compartment in the down tube. Unlike the bikes of most other manufacturers, the opening of the BOOM Box (Burritos Or Other Munchies) is located underneath the water bottle. The flap can therefore be opened without removing the bottle from the bike. However, the centre of gravity moves slightly higher and space for the bottle becomes more limited. With an easily accessible lever and two supplied equipment bags, riders can stow snacks, tools, a tube or anything else they want to have with them on the ride.

Thanks to the flip chip on the lower shock mount, the Sentinel can be ridden with either a 27.5 or 29 inch rear wheel. Cable openings on the side of the head tube allow simple and uncomplicated cable routing with customisable routing for mechanical or wireless shifting as well as left or right-sided rear brake routing. The new opening prevents cables from being kinked in the event of a fall and holds them in place to prevent rattling. If necessary, the openings can be closed to keep dirt and water out. The main pivot point is also protected by a pre-installed mud flap, which should improve the service life of the bearings.

Photo: TransitionYou can let it fly with the new Sentinel.

Prices and equipment variants

To make the new Sentinel attractive to a wide audience, Transition is offering the new bike in both carbon and aluminium versions. To minimise costs and weight, the aluminium frame has no storage compartment in the down tube. The aluminium frame is available in two equipment packages, Shimano Deore and XT, and as a frame alone. The carbon frame is available in three equipment variants, Shimano Deore, XT and SRAM X0 AXS, and as a frame on its own. Each carbon version has the same high-quality carbon construction including the B.O.O.M. box and frame bags.