2019 Transition
SENTINEL ALLOY COMPLETE NX
A 29″ aluminum frame full suspension trail bike with high-end components.
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Manufacturer Price
$3,199| Weight | 34.7 lbs |
|---|---|
| Frame | Aluminum |
| Suspension | Full, 140 / 160mm |
| Fork | RockShox Yari RC |
| Shock | RockShox Deluxe |
| Wheels | 29″ Aluminum |
| Drivetrain | 1 × 12 |
| Groupset | NX Eagle |
| 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
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
Aug 2018 · Spencer Johnson
I love to ride heinously steep trails... It’s kind of my thing. So when I heard about Transition Bikes’ new Speed Balanced Geometry (SBG), a platform that supposedly improves upon stability and handling by adjusting crucial angles and the offset of the front wheel, I was immediately excited. The biggest change they made is to what’s called steering trail, or the function of the headtube angle, fork offset and wheel size. While the changes in frame geometry that have been made in the past five years are staggering, steering trail has not changed, and so, according to Transition, “modern” geometry is still being held back by trail. The biggest reason for this is the fork offset, because that would mean not just tweaking a bike’s geometry, but creating a new standard for forks—and that would mean getting giants like RockShox and Fox on board. Somehow, the wizards at Transition managed to do just that, enabling their SBG platform to be brought to the masses. As a rider who seeks out the most aggressive trails that I can find, I’m all ears to any advantages that geometry can provide. With a symphony of updates—including a steeper seat tube angle, longer reach, shorter stem, super slack head tube angle and reduced fork offset—there’s no way this bike could not handle starkly different. The Sentinel was Transition’s first bike with SBG to hit the market, although now their Patrol, Scout and Smuggler have the technology too. As a big bike with big wheels and a good amount of travel (160mm in the front, 140 in the rear) the Sentinel is a bike designed for the exact kind of terrain I like to ride. And, as Transition claims, it’s a bike “designed for 29er skeptics,” meaning with the updated geo it should have maximum maneuverability coupled with unparalleled stability. Well, there’s only one way to find out.
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 | Rockshox Yari RC Charger Damper 160mm Travel: 160mm Spring Type: Air |
| Shock | RockShox Deluxe RT 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 | WTB Silverado Comp |
| Seatpost | KS Lev Integra, SM (125mm), MD (150mm), LG/XL (175mm) Type: Dropper |
| Grips | Velo VLG-1812D2 |
| Rear Derailleur | SRAM NX Eagle |
|---|---|
| Crank | SRAM NX Eagle DUB (170mm x 30t) |
| Shifters | SRAM NX Eagle |
| Cassette | SRAM PG 1230 (11-50t) |
| Chain | SRAM NX Eagle |
| Brakes | SRAM Guide T Type: Hydraulic Disc |
| Rims | WTB STi29/Novatech D791SB/D462SB |
|---|---|
| Tires | Front: Maxxis Minion DHF Dual WT (29x2.5), Rear: Maxxis Minion DHRII Dual WT (29x2.4) |
| Disc Rotors | SRAM Centerline (200/180mm) |
Last updated May 14
Not listed for 1,817 days