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Transition Sentinel Carbon XT Complete Mountain Bike 2025

sku# 258555
Transition - Sentinel Carbon XT Complete Mountain Bike 2025
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Product Info

The new Transition Sentinel Carbon XT Complete Mountain Bike is a long-term love story between riders and their bikes. Building on the success of Transition's most sought after bike, it has a similar silhouette to its predecessor with subtle tweaks to improve ride performance and kinematics. Its lively geometry mirrors the sporty feel of the Smuggler and Spur, making it more dynamic and playful while maintaining the long travel power and stability you need on rough descents. Transition has moved with the times and added in-frame storage to this carbon frame version, with the all new B.O.O.M box ensuring you have the essentials ready when a flat or snack break strikes. The best bikes grow to integrate new technology, and that's what makes the Sentinel so great. Treat yourself to a trail bike that knows how to put pedal to the metal – this Sentinel is a dream.

Product Details

Key Features

Sentinel Carbon Frame

Travel160mm Front (150mm Compatible) / 150mm Rear

Wheel Size29" " (X-Small 27.5")

Refined Tuning and Kinematics Create a Lively, Progressive PlatformThe new Sentinel may have a similar silhouette, but Transition have fully redesigned the frame with updated industrial design, features, and geometry to turn it up a notch. The leverage curve supports the bike higher in its travel, leaving plenty of room for big hits while keeping it light on its feet to remain nimble, and quick everywhere else. This gives it the lively, sporty attitude felt in the Spur and Smuggler without sacrificing its capabilities in rougher terrain. New size specific chainstays and a 64 degree headtube angle keep riders balanced with great traction on climbs and descents. All of this creates a bike that encourages new riders to push their limits, while ensuring a seasoned pro feels none. You will be ready to Send-it-all

B.O.O.M Box in Frame Storage with Supplied Frame Storage Bags on Carbon Models. The B.O.O.M Box (Burritos Or Other Munchies) is positioned below and isolated from the water-bottle cage mount. This allows you to leave your bottle installed in your cage while easily getting into the B.O.O.M. Box, reducing clutter and fuss on the trail. It also prevents noise and potential failure since it doesn't place any weight on the door itself. With an easy access lever and two supplied gear bags, riders can stow away snacks, tools, a tube or anything else they want to have along for the ride.

Geo Adjust ChipThe lower shock mount has a geo-adjust flip chip to accommodate mixed wheels, and features a new design that allows water, dirt and debris to easily wash away. Change the attitude of the bike with a simple flip of a chip. High and Low settings give you two very usable geo settings to suit your riding style: High is comparable to most other companies' low settings so there's a high shred warning in effect!

New Cable Routing PortsCable ports on the side of the headtube allow for easy and simple cable routing with customizable routing for mechanical or wireless shifting as well as left or right rear brake routing. The new port stops cables from getting kinked during a crash and holds them tight to prevent rattling. If you aren’t using the port at all, simply cover it with the supplied insert to prevent dirt or water getting inside your frame, as well as keeping a clean aesthetic. These ports help improve the look and quality of the frame, while remaining functional and simple for maintenance.

Main Pivot Mud GuardThe Sentinel comes with a pre-installed mud guard to protect the main pivot area, improving the bearing life.

Size Specific Chainstays (XS 436, SM/MD 442, LG/XL/XXL 448)The Sentinel has size-specific chainstay lengths to provide balanced handling and rider weight distribution across the range of sizes.

Increased Size Range (XS-XXL)

Specs

  • Biking Type: Mountain More 
    Mountain
  • Used For: Trail More 
    Trail
  • Suspension: Full Suspension More 
    Full Suspension
  • Frame Material: Carbon More 
    Carbon
  • Gearing: 1 x 12
  • Water Bottle Mounts: 1
  • Fork: RockShox Lyrik Ultimate More 
  • Stanchion Diameter (mm): 36
  • Fork Travel (mm): 160
  • Rear Shock: Rockshox Super Deluxe Ultimate More 
  • Rear Travel (mm): 150
  • Shifters: Shimano XT More 
  • Rear Derailleur: Shimano XT M8100 SGS, 12-Speed
  • Crankset: Shimano XT M8100 More 
  • Cassette: Shimano XT M8100, 10-51t More 
  • Chain: Shimano XT M8100 More 
  • Bottom Bracket: 73mm Threaded
  • Pedals: Not Included
  • Brake Levers: Shimano XT More 
  • Brake Calipers: Shimano XT M8120
  • Rotors: Shimano RT86 (203mm)
  • Headset: FSA NO.57E
  • Handlebar: ANVL Mandrel Alloy 35 XS/SM(800x20mm) MD/LG/XL(800x30mm) XXL(800x40mm)
  • Bar Tape/Grips: ODI Elite Flow
  • Stem: ANVL Swage (40mm)
  • Saddle: SDG Bel Air V3
  • Seatpost: OneUp V2 Dropper More 
  • Wheelset: DT Swiss M 1900 Spline, 30mm More 
  • Hubs: DT Swiss 370 Ratchet LN
  • Rims: DT Swiss M 1900 Spline 30
  • Spokes: DT Swiss Champion
  • Tires: Maxxis
  • Front Tire: Maxxis Assegai 2.5" | 3C, EXO+ More 
  • Rear Tire: Maxxis Minion DHR II 2.4" | 3C, EXO+ More 
  • Warranty: Limited Lifetime
Size XS S M L XL XXL
Rider Height 4'8" - 5'2" 5' - 5'6" 5''4" - 6' 5'9" - 6'3" 6 - 6'7" 6'2" - 6'8"
Reach (mm) 415 430 455 480 505 530
Stack (mm) 592 615 621 633 642 651
Effective Top Tube (mm) 527 549 577 605 632 660
Seat Tube (mm) 360 360 390 430 460 490
Head Tube Angle (°) 64.0 64.0 64.0 64.0 64.0 64.0
Seat Tube Angle (°) 79.8 79.3 78.7 78.3 77.9 77.6
Chainstay Length (mm) 436 442 442 446 446 446
Bottom Bracket Height (mm) 340 350 350 350 350 350
Bottom Bracket Drop (mm) 15 25 25 25 25 25
Head Tube Length (mm) 100 100 110 120 130 140
Wheelbase (mm) 1173 1208 1237 1273 1302 1332
Complete Weight (lbs) 32.9
Complete Weight (kg) 14.92
Wheel Size 27.5" (650b) 29" 29" 29" 29" 29"

Other Notes

Transition products can only be shipped within the United States

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