Transition Sentinel Carbon XT Complete Mountain Bike 2025

Product Details

Key Features

Sentinel Carbon Frame

Travel– 160mm Front (150mm Compatible) / 150mm Rear

Wheel Size– 29" " (X-Small 27.5")

Refined Tuning and Kinematics Create a Lively, Progressive Platform– The 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 Chip– The 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 Ports– Cable 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 Guard– The 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

  Biking Type

  
  
  MountainMountain bikes are built for tackling rough terrain with frames made of durable materials like aluminum or carbon fiber, ensuring stability and maneuverability. They feature suspension to absorb impacts from rocks, roots, and drops, providing a smoother ride.
  
  
  
• Used For: Trail More

  Used For

  
  
  TrailTrail bikes are the quintessential “mountain bikes.” If you’re heading into the woods expecting to do it all on two wheels – climbing, technical sections, AND fun descents – you’re looking for a trail bike.
  
  
  
• Suspension: Full Suspension More

  Suspension

  
  
  Full SuspensionEngineered to tackle the most challenging terrain with enhanced comfort and control. Unlike hardtail bikes, full suspension bikes feature both front and rear suspension systems that allow the wheels to move independently from the frame.
  
  
  
• Frame Material: Carbon More

  Frame Material

  
  
  CarbonCarbon is a composite frame material. Unlike metals, carbon is composed of fibrous strands woven into a grid and bonded with epoxy. Carbon is favored by many for its lightness and stiffness but its complexity in fabrication makes it the most expensive option.
  
  
  
• Gearing: 1 x 12
• Water Bottle Mounts: 1
• Fork: RockShox Lyrik Ultimate More

  Fork

  
  RockShox Lyrik UltimateFine-tune your ride and queue up the playlist. Like the words to your favorite song, Lyrik is ready to rock wherever you ride, from familiar home trails to alpine explorations. Built on a deep foundation of adventure, Lyrik is the most versatile fork in RockShox lineup. With the perfect range of travel fro an all-mountain workhorse, Lyrik priotiized weight while maintaining that all-critical stiffness and prowess on the descents. Time to press play.
  
  
• Stanchion Diameter (mm): 36
• Fork Travel (mm): 160
• Rear Shock: Rockshox Super Deluxe Ultimate More

  Rear Shock

  
  Rockshox Super Deluxe UltimateIn it to win it? Super Deluxe Ultimate is the smart bet for the podium. Packed to the hilt with fine-tuning adjustments that meaningfully improve suspension performance, it’s the most advanced shock RocShox have ever made. Pioneering one of the most impactful innovations in damper history, the new RC2T damper allows for 100% independent High Speed and Low Speed Compression adjustments, rounding out an arsenal of elite technology.
  
  Shock Adjustments - Separate and Independent Open and Threshold Pistons / Low Speed Compression Adjustment / Rebound Adjustment / Air Spring Pressure
  
  
  
• Rear Travel (mm): 150
• Shifters: Shimano XT More

  Shifters

  
  Shimano XTShimano´s Rapidfire Plus Deore XT shift lever delivers light and responsive front shifting for improved control out on the trail.
  
  
• Rear Derailleur: Shimano XT M8100 SGS, 12-Speed
• Crankset: Shimano XT M8100 More

  Crankset

  
  Shimano XT M8100The Shimano Deore XT crank features an entirely new construction, using direct mount chainrings, special gear tooth profile for improved chain retention, and a 172mm Q-factor.
  
  FEATURES
  • Superior chain retention
    • Special MTB gear teeth profile improves chain engagement and retention
      • DYNAMIC CHAIN ENGAGEMENT+
  • Rigid and lightweight design for aggressive trail riding
    • Hollow forged crank maximizes power transfer while limiting weight
      • HOLLOWTECH II
  
  
  
• Cassette: Shimano XT M8100, 10-51t More

  Cassette

  
  Shimano XT M8100, 10-51tWith its Beam Spider construction, the Deore XT M8100 cassette shaves weight while increasing Shimano´s MTB gearing range another gear. Using a Micro Spline freehub body and HYPERGLIDE+ tooth profile, these 10-45 and 10-51T cassettes deliver advanced shifting performance.
  
  
  
  
• Chain: Shimano XT M8100 More

  Chain

  
  Shimano XT M8100The M8100 chain provides enhanced chain retention thanks to an extended portion of the inner plate. The chain features quick-link assembly and SIL-TEC treatment for extended offroad durability.
  
  
• Bottom Bracket: 73mm Threaded
• Pedals: Not Included
• Brake Levers: Shimano XT More

  Brake Levers

  
  Shimano XTWith a focus on reduced weight and cross-country tuned stopping power, the Shimano Deore XT lever provides intuitive modulation so that you can explore your limits with confidence.
  
  
• 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

  Seatpost

  
  OneUp V2 DropperThe OneUp V2 Dropper has the most drop, shortest stack height and shortest total length of any other post on the market. No other dropper can get your saddle lower. Smooth, reliable and a great value. There’s more than one reason testers, reviewers, racers and riders consistently rate our Dropper Post “#1”, “5-Stars” and “10/10.”
  
  
• Wheelset: DT Swiss M 1900 Spline, 30mm More

  Wheelset

  
  DT Swiss M 1900 Spline, 30mmAn all-mountain wheelset that´s designed to spend all day taking hits without batting an eye, the M1900 combines trail feel with durability. Spline Hubs have quick engagement and the rims fight tire burps, allowing you to run lower pressures for maximum traction. Its 30mm internal width hits the sweet spot for wider tires, too.
  
  
• 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

  Front Tire

  
  Maxxis Assegai 2.5" | 3C, EXO+Greg Minnaar’s signature tire – the Maxxis Assegai – provides tenacious, predictable grip across the entire profile no matter the lean angle. The Assegai can be used front and rear for a surefooted feel or as a front paired with a faster rolling rear tire.
  • EXO+: Durable 60 TPI casing, legendary EXO puncture protection in the sidewalls, and a small butyl insert around the bead to protect from pinch flats and help prevent rim damage.
  
  
  
• Rear Tire: Maxxis Minion DHR II 2.4" | 3C, EXO+ More

  Rear Tire

  
  Maxxis Minion DHR II 2.4" | 3C, EXO+With side knobs borrowed from the legendary Minion DHF, but widened to provide more support, the DHR II corners like no other. The center tread features ramped leading edges to improve acceleration and sipes to create a smooth transition when leaning the bike. Paddle-like knobs on the center tread dig in under hard braking and help keep the bike under control.
  • EXO+: Durable 60 TPI casing, legendary EXO puncture protection in the sidewalls, and a small butyl insert around the bead to protect from pinch flats and help prevent rim damage.
  
  
  
• Warranty: Limited Lifetime