Sentinel Alloy Frameset – Side – Black Powder

Transition Sentinel Alloy – Black Powder

The Sentinel was designed for 29er haters. A bike so capable, playful and fun that even the most staunch 29er naysayer will instantly convert. With our reverse mullet suspension configuration, the Sentinel stays responsive and playful while delivering incredible downhill monster truck capabilities. Our new Speed Balanced Geometry is our crown jewel that unlocks 100% of the potential of this bike. With SBG you get total confidence when it comes to cornering and climbing that really sets this bike apart from the crowd.

“If there’s a design-focused arms race occurring in mountain biking, one needs look no further than Transition as a key protagonist in the current push toward ever-longer and more-aggressive geometry. it should come as absolutely no surprise that the Sentinel is most at home bombing downhill. It does this ridiculously well, straight-lining the roughest, ugliest, sketchiest descents with a supreme confidence that borders on disdain.” – The Bike Bible Review

“The Sentinel is an absolute beast when it comes time to descend, a downright monster when the trail turns steep and rough. There are plenty of long-travel 29ers out there that can handle the Whistler Bike Park, but when it comes to tackling the steepest, chunkiest trails there aren’t many that can match the Sentinel’s performance. ” – Mike Kazimer (


Transitions long travel 29er trophy truck!

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Contact Us

The Bicycle Service can be found at:

Cycle Exchange
139 Richmond Road
Kingston, KT2 5BZ

Tel: 0208 549 6069
Mob: 07936 679134

Opening Hours

Mon: 08:30-17:00
Tues: 08:30-19:00
Weds: 08:30-17:00
Thurs: 08:30-19:00
Fri: 08:30-17:00
Sat: 09:00-17:00
Sun: 10.00-15.00

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