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2023 Transition

Sentinel Carbon XT

A 29″ carbon frame full suspension enduro bike with high-end components.
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Manufacturer Price

$6,299
Weight31.3 lbs  
FrameCarbon
SuspensionFull, 150 / 160mm
ForkFox Performance Float 36
ShockFox Float X2 Performance
Wheels29″ Aluminum
GroupsetXT
BrakesShimano XT Hydraulic Disc
SeatpostDropper
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Sentinel Carbon XT
Other Enduro bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

26 mph

Sentinel Carbon XT

26 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full Sentinel model range

View Comparison
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

Summary

The Transition Sentinel is a versatile and lively enduro bike that excels in a variety of terrains, offering a balanced and intuitive handling experience. Its well-tuned suspension and composed nature at speed make it a standout, though it requires an active riding style to fully exploit its capabilities. While it pedals efficiently and climbs well, some riders may need time to acclimate to its rear wheel traction and find its suspension can be overwhelmed by rapid successive hits.

Pros
  • Excellent all-around performance

  • Versatile and lively trail bike

  • Well-tuned and smooth suspension

  • Balanced and intuitive handling

  • Surprisingly deft climber with satisfying efficiency

Cons
  • Short cockpit for seated pedaling

  • Rear end barely uses its travel, generating little traction

  • Suspension can be overwhelmed by repeated hits in short succession

Key Quotes
There are many good trail bikes available today. I’ve tested many of them, and the new Transition Sentinel is one of the very best.
Bicycling
This is exactly how an enduro bike should climb!
Enduro Mountainbike Magazine logoEnduro Mountainbike Magazine
The Sentinel is a bit more subtle until you turn up the volume, and then you realize it's just as bad ass, but it's also more fun than the Enduro in lower angle terrain.
NSMB logoNSMB

Feedback?

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Bicycling
Is the Transition Sentinel a Superbike Hiding in Plain Sight?

Oct 2024

The latest iteration of Transition’s 150mm travel trail bike features in-frame storage and more balanced performance.

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MTB Mag
[First Ride] Transition Sentinel V3

Oct 2024 · Ian Collins

In July I attended the launch of a new bike which I’ve given very high praise in its past iteration – the Transition Sentinel. Now in its third time around, the already highly versatile rig boasts updated geometry and improved kinematics as well as downtube storage, fully internal cable routing and a flip chip. I managed to get a few solid rides in on the new bike deep in the middle of Summer. Luckily, that coincided with a one-off rain storm that revitalized the local soil during an atypically dry Summer in Bellingham, Washington. The trails I rode included all

Read Review

Pinkbike
First Ride: The 2025 Transition Sentinel is 29" and MX-Capable

Oct 2024 · Jessie-May Morgan

As is stock, it was provided with dual 29" wheels, with the 205mm x 60mm shock giving 150mm of rear wheel travel.

Read Review

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

Read Review

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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NSMB
2021 Transition Sentinel Review

Jan 2021

Since it was launched, the Transition Sentinel has been a bellwether for progressive trail bike geometry. The 2021 Sentinel is no exception, but in this case the trend indicates that trail bike geometry is stabilizing. I know this, because I went from the last generation Sentinel to this one, and even though I sized up from a Large to an XL, they're both clearly cut from the same cloth, and I have to say I'm a fan of the tailor.

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MTBR
Review: 2020 Transition Sentinel

Nov 2020 · Jordan Carr

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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Geometry
Specs
Build
Frame

Sentinel Carbon 150mm

BB StandardBSA, 73mm, Threaded

Tire Clearance2.6"

ColorsMisty Green; Black Powder; Ti Grey (Carbon Only); Loam Gold (Carbon Only)

Fork

Fox Float 36 Grip Performance (160mm)

Travel160mm

Spring TypeAir

Shock

Fox Float X2 Performance 2 Position, (205x62.5mm)

Travel150mm

Bottom Bracket

73mm BSA Threaded

Headset

FSA No.57E

Stem

ANVL Swage (40mm)

Handlebar

ANVL Mandrel Alloy 35, SM/MD (800x20) LG/XL (800x30) XXL (800x 40)

Saddle

ANVL Forge Cromo

Seatpost

OneUp Dropper Post, SM (150mm) MD (180mm) LG/XL/XXL (210mm)

TypeDropper

Grips

ODI Elite Flow

Groupset
Rear Derailleur

Shimano XT M8100

Crank

Shimano XT M8100, (30t/170mm)

Shifters

Shimano XT M8100

Cassette

Shimano SLX M7100 (10-51t)

Chain

Shimano XT M8100

Brakes

Shimano XT M8120

TypeShimano XT Hydraulic Disc

Wheels
Rims

Stans Flow S2

Spokes

Sapim Race Double Butted

Front Hub

Stans E-Sync

Rear Hub

Stans E-Sync

Tires

Front: Maxxis Assegai 3C EXO+ (2.5), Rear: Maxxis Minion DHRII 3C EXO+ (2.4)

Disc Rotors

Shimano RT86 (203mm)

Rider Notes
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First added December 7

Last updated June 10

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