2021 Transition

Sentinel Carbon Frameset

A 29″ carbon frame full suspension enduro frameset.

Manufacturer Price

$3,399
Weight7.1 lbs (frame)  
FrameCarbon
SuspensionFull
ShockFox Float X2 Factory
Wheels29″
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Sizing
SM

5'0" – 5'7"

MD

5'4" – 6'0"

LG

5'8" – 6'3"

XL

6'0" – 6'7"

XXL

6'2" – 6'10"

🐐 Estimated

Rider Fit Notes

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Reviews
Beta
Transition Introduces the Aluminum Sentinel and Scout - Video

Sep 2021 · Beta

When you've already seen every episode of The Dog and Pony Show

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Pinkbike
First Look: Transition Launch Alloy Scout and Sentinel

Sep 2021 · Seb Stott

Aluminum is back on the menu for Transition's popular Scout and Sentinel models.

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Enduro Mountainbike Magazine
2021 Transition Sentinel XT review – A powerful bike for powerful riders!

Jan 2021 · Christoph Bayer

Our expectations of the Transition Sentinel Carbon were very high for this group test,not least because the guys and gals behind the brand are really good riders themselves. Its specs look extremely promising, but can the bike deliver on the trail?

Highs
  • Rewards an active riding style

  • Lots of reserves for big impacts

  • Excellent climbing characteristics

Lows
  • Punishes a passive riding style

  • Not enough traction in rough terrain

  • Very stiff bike overall

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MTBR
Review: 2020 Transition Sentinel

Nov 2020

Can this revamped long-travel 29er out-perform the original? - Mtbr.com

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Freehub
Bike Review | Transition Sentinel GX

Apr 2020

There’s more than meets the eye with the latest and greatest version of Transition Bikes’ Sentinel. The crisp edges and gentile curves are surely drool-worthy, but if a bike doesn’t ride at least twice as good as it looks, what’s the point? Thankfully, the sorcerers at Transition put the utmost importance on how a bike rides, the reason they’ve gone above and beyond to develop their SBG geometry, adapting their numbers to match the needs of modern-day trail bikes. As for the new Sentinel, the biggest update is an extra 10mm of travel. While this might not seem like much, it brings the bike into a new category of sendability. The steadfast feeling that the company’s bikes are so well known for, simply because it’s perfectly suited to the Northwest, hasn’t wavered, yet they’ve also managed to ramp up the responsiveness and playfulness.

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BIKE Magazine
First Ride: The New Transition Sentinel

Apr 2020

What do you do to update a bike that was already ahead of its time, like the Transition Sentinel? Not much. And as it turns out, that was just enough.

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NSMB
2021 Transition Sentinel

Apr 2020

Today is the day Transition unveils their new Sentinel. The short version of the changes they made to their mid-travel 29" trail bike reads like this: 10mm more travel, slightly slacker at the head tube, slightly steeper at the seat tube, 5mm longer chain stays, increased tire clearance, and, it won't take you long to notice, a revised visual ID that looks less like the swoopy organic shapes many brands have been favouring, and more angular and stealth-fighterish.

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MBR
Transition Sentinel Carbon GX: first ride - MBR

Jul 2019 · Mick Kirkman

The full carbon Transition Sentinel frame looks super slick, and ticks just about every box in the ‘modern geometry’ checklist.

Highs
  • One of a handful of 140mm travel 29ers that are truly Alpine ready

Lows
  • Less urgent and spritely pedalling than plenty similar travel rigs

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Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

Sentinel Carbon Frameset

ColorsTi Grey; Loam Gold

Shock

Fox Float X2 Factory 2 Position

Rider Notes
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Last updated June 2
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