The Transition Sentinel Alloy Frameset builds into a truly capable bike. From ploughing down the roughest technical descents to a composed all round trail bike, the Sentinel has earned the title of one of the most aggressive downhill long travel 29er’s available. Sentinel Alloy Frameset with 140mm rear travel frame with Transitions SBG and GiddyUp 2.0HH suspension technology Speed balanced geometry gives agility, traction, balance and increase confidence on steep terrain and high speeds Fox DPX2 Performance Elite rear shock provides 140mm of super smooth & efficient travel The Sentinel has Transition’s SBG (Speed Balanced Geometry) and Giddyup 2.0HH suspension system. Both work in combination to provide perfectly tuned suspension for both climbing and descending and ensures that the bike handle’s correctly. Basically, it gives you an agile, well balanced, confidence inspiring ride with tons of grip and control. Perfect for any skill level. Giving you the confidence and control to push your limits is the Fox DPX2 rear shock, offering incredible control and small bump sensitivity. In combination with the GiddyUp 2.OHH suspension kinematics, this makes for a formidable bike that is perfect for ragging hard all day long.