2021 Transition Sentinel 29" Carbon XT

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Available in store: Check availability

Available in store

29" Wheels | 150mm Rear/160 Front | 63.6° Head Tube
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Delivery time: In Store Pickup Only
Frame Sentinel Carbon
Wheel Size 29"
Travel 150mm Rear/160 Front
Fork Fox Float 36 Grip Performance 160mm Travel/44mm Offset
Rear Shock Fox Float X2 Performance 2 Position
Headset ANVL Swage (40mm)
Bottom Bracket
Shifter Shimano XT M8100
Rear Derailleur Shimano XT M8100
Cassette Shimano SLX M7100 (10-51t)
Chain Shimano XT M8100
Chainring Shimano XT M8100 (30t/170mm)
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 (800x 40)
Stem ANVL Swage (40mm)
Grips Sensus Lite
Saddle ANVL Forge Cromo
Pedals N/A
Front Wheel Stans Flow S1 (Hub: Stans Neo Durasync)
Rear Wheel Stans Flow S1 (Hub: Stans Neo Durasync)
Front Tire Maxxis Assegai 3C EXO+ (29x2.5)
Rear Tire Maxxis Minion DHRII 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.

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

We recommend that you call our shop to discuss bike sizing and styles with the bike geeks at the shop. We have more to choose from then our website shows, and our bikes are available for purchase in our retail store. For the most accurate inventory and best advice, call 530-582-0909. We are open 8AM-6PM daily!


Due to our dealer agreements, this item is not permitted to be shipped directly to you for orders placed online. However it can be purchased online and be picked up at our store in Truckee, CA. If there is no Transition dealer in your area, give us a call. Our friends at Transition Bicycles want you riding their brand and we will help you get the bike!