2023 Transition Sentinel 29" Carbon XT

$6,299.99 $5,669.99
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Available in store

29" Wheels | 150mm Rear/160mm Front Travel | 63.6° HT
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Delivery time: 5-7 Business Days
Frame Transition Sentinel Carbon
Wheel Size 29"
Travel 150mm Rear | 160mm Front
Fork Fox Float 36 Grip Performance 160mm Travel/44mm Offset
Rear Shock Fox Float X2 Performance 2 Position
Headset FSA No.57E
Bottom Bracket 73mm BSA Threaded
Shifter Shimano XT M8100
Rear Derailleur Shimano XT M8100
Cassette Shimano SLX M7100 (10-51t)
Chain Shimano XT M8100
Chainring 32T Standard Single Ring
Crankset Shimano XT M8100 (30t/170mm)
Brakes Shimano XT M8120
Rotors Shimano RT86 (203mm)
Seatpost OneUp Dropper Post SM (150mm) MD (180mm) LG/XL/XXL (210mm)
Handlebar ANVL Mandrel Alloy 35 SM/MD (800x20) LG/XL (800x30) XXL (800x40)
Stem ANVL Swage (40mm)
Grips ODI Elite Flow
Saddle ANVL Forge Cromo
Pedals N/A
Front Wheel Stans Flow S1
Rear Wheel Stans Flow S1
Front Tire Maxxis Assegai 3C EXO+ (29x2.5)
Rear Tire Maxxis Minion DHR II 3C EXO+ (29x2.4)
Sizes S, M, L, XL, XXL

The Sentinel inspires confidence like you’re wearing full body armor.

It’s forgiving do-it-all attitude truly blurs the lines between planted bottomless sender and playful poppy trail pony. Whether you’re chasing EWS dreams or just a weekend afternoon escape, it will bring out the best in you. So easy to get acquainted with you’ll find yourself sending lines, jumps and maneuvers you always felt were beyond your ability. Where before you went around, now you go over. Where you pushed up, now you pedal. Where you rolled, now you boost.


Speed Balanced Geometry
SBG ensures the bike maintains low speed agility, front wheel traction, and proper rider weight balance while actually increasing confidence in steep terrain and at high speeds. With SBG, a slacker head tube angle is combined with a all new reduced offset fork standard, preventing the front wheel from being too far in front of the rider. This improves front to rear weight distribution on the bike, which is often out of balance on long and slack bikes. One of SBG's greatest benefits is that it creates a confident steering feel that adapts to wheel speed. More stability when going fast, more agility on technical slow speed maneuvering as well as improved traction, control and confidence for any skill level of rider.

    S M L XL XXL
A Reach 420 450 476 501 521
B Stack 613 622 631 640 649
C Effective TT Length 552 585 613 641 665
D Seat Tube Length 350 390 430 460 490
E Effective ST Angle 78.2° 77.5° 76.9° 76.4° 76.0°
  Saddle Height For Effective ST Angle 600 660 720 780 820
  Actual ST Angle 70.8° 70.8° 70.8° 70.8° 70.8°
  Seat Tube Offset AT BB 87 87 87 87 87
F Head Tube Length 100 110 120 130 140
G Head Tube Angle 63.6° 63.6° 63.6° 63.6° 63.6°
H Chainstay Length 440 440 440 440 440
I Wheelbase 1199 1233 1263 1292 1316
J Bottom Bracket Drop 29 29 29 29 29
K Estimated BB Height 346 346 346 347 347
L Stand Over Height 671 688 700 712 722
M Fork Offset 43 43 43 43 43

Measured in mm


Lifetime Warranty
At Transition Bikes we take pride in the quality of our products and are stoked to offer a lifetime warranty for the original owner and our stellar crash replacement program. We got your back so you don't have to worry about your bike.

The Sentinel Carbon used premium Japanese Toray fiber using a unique latex coated EPS molding process to create tighter edge radius control using less material.

Pivot Technology
Collet main pivot technology improves rear end stiffness and keeps your pivot hardware tight. Additional bearing shields prevent main pivot bearing contamination when washing your bike or riding in wet conditions.

Frame Protection
We keep your bikes quiet and your frame safe from damage with fully integrated, flush-mounted rubber frame protection at all critical areas. In addition to downtube and seatstay protection, the ribbed chainstay protector features expanded coverage of rear dropout pivot area.

Enduro Max Bearings
We exclusively use Enduro Max suspension pivot specific bearings in standard sizes that are readily available worldwide. Dual bearings are used at dropout pivots for frame stiffness and additional c-clips lock the rocker bearings in place under torsional loads.

Gear Accessory Mount
Our underside top-tube accessory mount allows you to carry a spare tube or other goodies safely on your frame in case you are looking to ditch the backpack.

Mega Seatpost Insertion
Dropper posts keep getting longer so we combine short seat tube lengths with mega seatpost insertion to help get your saddle completely out of the way.

Tire Clearance
Ample clearance for mud and tires up to 2.6" in width.

User Friendly Cable Routing
To simplify maintenance and keep your bike noise free, the rear derailleur cable is routed through guide tubes in the front triangle and chainstay.

Threaded BB
A standard 73mm threaded bottom bracket shell makes crankset maintenance hassle-free and prevents unwanted press-fit BB related noises.

Press In Headset
Our ZS44/ZS56 press in headset gives you the freedom to use angle adjust headsets if you feel the need to make your bike a touch slacker or a touch steeper.

Water Bottle Compatibility
We keep your water bottle clean inside the front triangle so you can keep hydrated without worrying about getting mud in your mouth.


Giddyup Suspension Design
We want to make it as easy as possible to experience great rear suspension performance. The GiddyUp suspension system is designed to behave intuitively across a broad range of setup. Because, we get it, sometimes you just want to grab your bike and GiddyUp, without checking your setup. When you do, it will always feel good.
We did this by balancing a 25% progressive leverage curve with a consistent linear rate of change. Anti-squat is tuned to enhance pedaling performance and acceleration. Overall chain growth is moderate and reduces after sag so chain tension doesn't get in the way of the suspension working.
This translates to killer small bump compliance and great mid-stroke support that gradually transitions into an end of stroke ramp that is subtle, yet supportive. The amount of consistent progression is carefully optimized for both air and coil shocks. Riders are able to add or remove volume spacers in air shocks to suite their individual riding style and there is no compromise to bottom out support with coil shocks. The Sentinel has 150mm of rear wheel travel when used with the supplied 205mm x 62.5mm stroke shock. It is also possible to install a shorter, 205mm x 57.5mm stroke shock, to decrease the rear wheel travel to 140mm.
A wide usable sag range of 25 - 35% allows the rider to tune the feel of the bike; from poppy and playful, to planted for plowing. Wherever you end up, you can focus on the trail without remotes, levers or knobs. Just grab your bike and GiddyUp.

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