Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices

Today’s Deals

2020 Transition

Sentinel Carbon Frameset

A 29″ carbon frame full suspension enduro frameset.

Manufacturer Price

$2,999
Weight7.1 lbs (frame)  
FrameCarbon
SuspensionFull
ShockFox Float DPX2 Performance Elite
Wheels29″
Where to Buy
Similar Bikes
Top Comparison
Insights
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

None yet.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Reviews

Summary

The Transition Sentinel excels as an aggressive all-rounder with a long, low, and slack geometry that provides stability and playfulness on descents while maintaining efficient climbing capabilities. Its progressive suspension design offers excellent small bump compliance and support on bigger hits, making it versatile for various terrains. The bike is praised for its comfort, integrated frame protection, and ability to handle technical trails with confidence.

Pros
  • Stable and playful handling with long, low, slack geometry

  • Efficient climbing and good traction

  • Progressive suspension for excellent support and compliance

  • Comfortable with integrated frame protection and low standover height

  • Versatile for aggressive all-round riding

Cons
  • Suspension setup may require tinkering or adjustment

  • Some noise or clearance issues with certain components

  • Not ideal for riders seeking a pure downhill smasher

Key Quotes
It’s good. Really good. It was hard to find the limits on this bike.
BIKE Magazine logoBIKE Magazine
Wow, the Sentinel truly packs it all into one rig.
MTBR logoMTBR
The new Transition Sentinel isn't a drastic departure from the original, but if anything that's a testament to how far ahead of the curve that first version actually was.
Pinkbike

Feedback?

View all 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

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

Read Review

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.

Read Review

MTBR
Review: 2020 Transition Sentinel

Nov 2020 · Jordan Carr

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

Read Review

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.

Read Review

Pinkbike
Review: Transition's New Sentinel V2 - Now With More Travel

Apr 2020 · Mike Kazimer

The Sentinel bumps up to 150mm of travel, along with a new frame shape and updated geometry.

Highs
  • Great all-rounder for riders with the right terrain

  • Relatively light considering the build kit

  • Wide range of sizes, room for long travel dropper posts

Lows
  • Knocking noise from Super Deluxe

  • Water pools up underneath lower shock bolt

  • Not the mini-DH / smash-through-everything bike some riders may be looking for

Read Review

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

Read Review

MTB Mag
[Tested] Transition Sentinel X01 Carbon

Aug 2018 · Mauro Franzi

After our recent test of the Transition Patrol, many readers asked for a comparison with the Sentinel, the Enduro 29er from the American brand. We got ahold of the Sentinel in its top-level, X01 Carbon build, for another test and a head-to-head comparison between the two models. This is therefore going to be a slightly different review, in which we will also compare the two bikes throughout. Despite the different length travel, 160mm at the front and 140mm at the rear for the Sentinel, there are a lot of common aspects, for example the Speed Balanced Geometry and the suspension scheme: a four bar

Read Review

Geometry
Specs
Build
Frame

Sentinel Carbon Frameset

Shock

Fox DPX2 Performance Elite

Rider Notes
Riders Also Viewed

First added February 15

Last updated February 20

Not listed for 2,290 days