The Sentinel is a bit of a do-everything bike in the Transition range, up for all-dayers in the hills or uplift days.
Out the box, the bike is set up with a 150 mm Kashima Fox X2 shock, but you can change the rear shock for a shorter one to run the back at 140 mm. The frame will be happy with a fork between 140 and 160 mm.
Transition have given the longer-lower-slacker approach a name - "Speed Balanced Geometry" - but effectively it means a longer top tube and slack head angle, ready to run a short stem and short offset (42-44 mm) fork. All sizes can take a water bottle, though you'll need to use a fidlock bottle on the size small frame.
Never ones to shy away from a cheesy name, the Transition's "GiddyUp" suspension has fantastic small bump sensitivity and enough progression to run a coil shock without blowing through the travel. The Enduro MAX bearings and additional bearing shields are a huge plus point for UK riding.
|Frame||Sentinel Carbon Frame, 29” Wheels, 150 mm compatible with 140 mm Travel, Speed Balanced Geometry, GiddyUp Suspension Platform, Internal Dropper Post and Rear Derailleur Routing, Post Mount Disc Brake, 148x12 mm Boost Thru- Axle, 73 mm Threaded BB w/ ISCG05 Tabs|
|Rear Suspension||Fox Float X2 Factory 2 Position, Compression and Rebound Adjustment, 205x62.5 mm, Trunnion Mount Top / 25 mm x 8 mm Bottom|
Geometry & Sizing
|Transition Sentinel Geometry|
|Sizes in MM||S||M||L||XL||XXL|
|C: Head Tube
|D: Head Tube
Seat Tube Angle
|F: Seat Tube
|H: BB Height||346||346||346||347||347|
|I: BB Drop||29||29||29||29||29|
|J: Chainstay Length||440||440||440||440||440|
|M: Fork Offset||44||44||44||44||44|