SENTINEL CARBON COMPLETE GX
A 29″ carbon frame full suspension trail bike with high-end components.
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Manufacturer Price
$4,999Weight | 31.6 lbs |
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Frame | Carbon |
Suspension | Full, 140 / 160mm |
Fork | Fox Performance Float 36 |
Shock | Fox Float DPX2 Performance |
Wheels | 29″ Aluminum |
Drivetrain | 1 × 12 |
Groupset | GX Eagle, Truvativ Descendant |
Brakes | Hydraulic Disc |
Seatpost | Dropper |
For This Bike
5'0" – 5'7"
5'4" – 6'0"
5'8" – 6'3"
6'0" – 6'7"
🐐 Estimated
None yet.
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Nov 2020
Can this revamped long-travel 29er out-perform the original? - Mtbr.com
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.
Apr 2020 · Mike Kazimer
The Sentinel bumps up to 150mm of travel, along with a new frame shape and updated geometry.
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
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
Jul 2019 · Mick Kirkman
The full carbon Transition Sentinel frame looks super slick, and ticks just about every box in the ‘modern geometry’ checklist.
One of a handful of 140mm travel 29ers that are truly Alpine ready
Less urgent and spritely pedalling than plenty similar travel rigs
Dec 2018 · Christoph Bayer
The Transition Sentinel is very similar to the competition in terms of travel and weight. In practice, however, the other bikes were not able to keep up.
Unstoppable on demanding tracks
Very stable at high speed
Great spec
Gets bored on simple trails
Requires an active riding style
On tight climbs, the front wheel tends to want to flop from side to side
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
Mar 2018 · bturman Rconroy
Transition's fresh approach to geometry results in a bike that handles incredibly well, encouraging you to get after it that much harder. It's portly but built to last.
Feb 2018 · Scott Prendergast
WELL LISTEN UP KIDS! WE REVIEW A LOT OF BIKES AND FROM TIME TO TIME WE GET ONE THAT’S ALWAYS A BIT OF A SURPRISE. THE TRANSITION SENTINEL IS NO JOKE, AS A MATTER OF FACT WE DON’T WANT TO GIVE THIS BIKE BACK. This rig bleeds as much style as Mick Jagger on the dance floor. A long travel (140mm rear, 160mm front) 29’er is reasonably new for Transitions range, previously they had the Smuggler with 115mm of rear […]
Frame | Sentinel Carbon 140mm Rear/160mm Front |
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Fork | Fox 36 Grip Performance 160mm Travel: 160mm Spring Type: Air |
Shock | Fox DPX2 Performance Travel: 140mm Spring Type: Air |
Headset | FSA No.57E |
Stem | RaceFace Aeffect R (40mm) |
Handlebar | RaceFace Chester 35, SM/MD (780 x 20mm), LG/XL (780 x 35mm) |
Saddle | ANVL Forge Cromo |
Seatpost | RockShox Reverb Stealth, SM (125mm), MD (150mm), LG/XL (170mm) Type: Dropper |
Grips | ODI Elite Flow |
Rear Derailleur | SRAM GX Eagle |
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Crank | SRAM Descendent 6K DUB (170mm x 30t) |
Shifters | SRAM GX Eagle |
Cassette | SRAM XG 1275 (10-50t) |
Chain | SRAM GX Eagle |
Brakes | SRAM Code R Type: Hydraulic Disc |
Rims | Stans Flow S1 Comp |
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Tires | Front: Maxxis Minion DHF 3C WT (29x2.5), Rear: Maxxis Minion DHRII 3C WT (29x2.4) |
Disc Rotors | SRAM Centerline (180mm) |
Last updated May 14
Not listed for 1,817 days