A few years ago, when the Transition Sentinel hit the market it was, for lack of a less cliché term, a game changer. While that term is thrown around far too loosely, it was the Sentinel’s “Speed ​​Balanced Geometry” specifically, that changed the game – or at least enough so that a great deal of mountain bike manufacturers piled on and copied adopted the approach. Transition’s approach was, in short:

• Steeper seat angles
• Longer reaches paired with shorter stems
• Slacker head angles combined with shorter offset forks

The combination of these three concepts went a very long way in improving modern mountain bikes in two directions. Simultaneously, SBG made them better at climbing, due to the more upright, forward positioning and also better at descending, due to increased stability from a longer front end and slacker head angle. Anyhow, a few short years later, countless brands both large and small are implementing similar concepts with their geometry. So – now that the long winded introduction to the old Sentinel is behind us, it’s time to meet the new Sentinel …

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