2019 Transition
SENTINEL ALLOY COMPLETE GX
A 29″ aluminum frame full suspension trail bike with high-end components.
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Manufacturer Price
$4,399| Weight | 33.8 lbs |
|---|---|
| Frame | Aluminum |
| Suspension | Full, 140 / 160mm |
| Fork | Fox Performance Elite Float 36 |
| Shock | Fox Float DPX2 Performance Elite |
| 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"
6'2" – 6'10"
🐐 Estimated
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.
Nov 2020
Can this revamped long-travel 29er out-perform the original? - Mtbr.com
Jun 2020 · Ian Collins
Not all that long ago, I wrapped up a test on the new Transition Sentinel . Turns out, I liked the bike enough that I really, really didn’t want to give it back. So I built it out with a smattering of my favorite parts as of late. As far as the bike itself goes, I love the do-it-all but still have fun spirit the Sentinel has. With 160mm front and 150mm rear travel, rolling on 29 “wheels, it’s no surprising what a capable bike it is, but what surprised me was just how nimble the bike was and how
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
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.
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
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.
| Frame | Sentinel Alloy 140mm Rear/160mm Front |
|---|---|
| Fork | Fox 36 Grip 2 Performance Elite 160mm Travel: 160mm Spring Type: Air |
| Shock | Fox DPX2 Performance Elite Travel: 140mm |
| Headset | FSA No.57E |
| Stem | RaceFace Aeffect R (40mm) |
| Handlebar | RaceFace Chester 35, SM/MD (780 x 20mm), LG/XL/XXL (780 x 35mm) |
| Saddle | ANVL Forge Cromo |
| Seatpost | RockShox Reverb Stealth 1x Remote, SM (125mm), MD (150mm), LG/XL/XXL (170mm) Type: Dropper |
| Grips | ODI Elite Flow |
| Rear Derailleur | SRAM GX Eagle |
|---|---|
| Crank | SRAM Descendent 7K DUB (170mm x 30t) |
| Shifters | SRAM GX Eagle |
| Cassette | SRAM XG 1275 (10-50t) |
| Chain | SRAM GX Eagle |
| Brakes | SRAM Code RSC Type: Hydraulic Disc |
| Rims | Stans Flow S1 Team |
|---|---|
| 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 1,866 days