Transition Bikes
2025 Transition Sentinel 29" Carbon Mountain Frame (Push Shock Ready)
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2025 Transition Sentinel 29" Carbon Mountain Frame (Push Shock Ready)
AVAILABLE FOR IN-STORE PICK UP ONLY
Free Shipping on orders over $50*
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Shipping
Shipping
*Free shipping applies to parts orders over $50 shipping to addresses within the contiguous U.S. (excludes HI, AK, APOs and US territories). Some exclusions apply.
International Orders
We can sell and ship some items internationally but certain brands or substances may be prohibited from shipping outside of U.S. or to certain territories.
We are unable to estimate local taxes and VAT and are not responsible for any of these charges or duties.
Package forwarders may be utilized at your discretion. We are not responsible for any damage that occurs after your item has been delivered to the shipping address. All shipments need to be inspected prior to being forwarded to secondary destinations.
Lead Times
We under promise and over deliver. Although many products will ship the same day or next day, our official policy is 2-4 business days of handling time including expedited orders (Next Day Air, etc.). If you need something in a rush please use a premium shipping service and contact us prior to placing your order for a more accurate ETA.
Shipping Restrictions
Certain items containing lithium batteries, compressed air or hazardous materials may only be shipped within the contiguous U.S. using ground delivery only.
Oversized items, including bikes, may not be available for expedited shipping. We will contact you should in the event that your selected shipping service is unavailable for your order.
Bike Builds
All bikes are built, checked and test ridden prior to boxing and shipping. This process averages 1-3 weeks depending on our backlog and the complexity of your build. Expedited builds are available for an additional fee, contact us for details.
Complete bikes are packed in our own specially designed bike boxes but do require some basic assembly. If you aren't confident in your mechanical abilities please have your local shop do the final assembly.
Only bikes/frames over $3000 are eligible for free shipping. There is a $150 charge on all bikes/frames under $3000.
Received a damaged item or bike?
We do our best to protect everything we ship but accidents do happen. Please keep all packaging and contact us within 24 hours of receiving your order so we can file a claim.
Details
REFINING THE LEGEND
The new Sentinel may have a similar silhouette, but we've 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.
REFINED DETAILS
We took a step back and looked for ways to improve the Sentinel, not just for the sake of change but for real, tangible steps forward that riders will feel and experience.
We added internal frame storage in the downtube of our carbon frame. 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 by not placing 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 FLIP 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. Low for 29" rear wheel, high for 27.5".
MUD GUARD
The Sentinel comes with a pre-installed mud guard to protect the main pivot area, improving the bearing life.
CHAINSTAY PROTECTOR
An all-new chainstay protector minimizes chain slap, so you can enjoy the sound of your favorite turns. The "pillow top" design features large rubber pillows that dampen sound and protect the chainstay.
CABLE PORTS
Cable ports on the side of the headtube allow for easy and simple cable routing with customizable options for mechanical or wireless shifting as well as left or right rear brake setups. 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 from getting inside your frame and keep a clean aesthetic. These ports help improve the looks of the frame while remaining functional and simple for maintenance.
| REAR TRAVEL: | 150mm (Compatible with 160mm) | ||
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| FRONT TRAVEL: | 160mm | ||
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| WHEEL SIZE: | 29" or MX (XS 27.5 only) | ||
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| SIZES: | XS, SM, MD, LG, XL, XXL | ||
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| FRAME BEARINGS: | 2x 6903, 2x 6902, 4x 6802, 2x 3802, 2x 6900 | ||
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| FORK AXLE TO CROWN: | 578mm (Includes headset) (XS 560mm) | ||
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| FORK OFFSET: | 44mm (XS 37mm) | ||
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| REAR SHOCK SIZE: | 205mm x 60mm (compatible with 205 x 65mm) | ||
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| SHOCK HARDWARE: | Trunnion Mount Top / 30mm x 8mm Bottom | ||
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| HEADSET (TOP): | 44mm Zero Stack | ||
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| HEADSET (BOTTOM): | 56mm Zero Stack | ||
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| BB SHELL: | 73mm BSA Threaded | ||
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| CHAINLINE: | 52-55mm | ||
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| REAR BRAKE MOUNT: | 180mm Post Mount, Max Rotor Size 223mm | ||
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| REAR AXLE: | Transition Axle For UDH, 12mm x 148mm Spacing | ||
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| ISCG TABS: | ISCG05 | ||
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| SEATPOST DIAMETER: |
31.6mm | ||
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| SEAT CLAMP: | Carbon: 37.0mm Alloy: 34.9mm |
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| MAX SEATPOST INSERTION: | Carbon: X-Small 245mm | Small 245mm | Medium 275mm | Large 315mm | X-Large 345mm | XX-Large 375mm Alloy: X-Small 225mm | Small 225mm | Medium 260mm | Large 310mm | X-Large 325mm | XX-Large 340mm |
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| MAX CHAINRING SIZE: | 34T Standard Single Ring | ||
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| MAX TIRE SIZE: | 29" x 2.5" | ||
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| REAR SHOCK SAG: | 150mm/60mm: 16-20mm (26-32%) | ||
Specifications:
| REAR TRAVEL: | 150mm (Compatible with 160mm) | ||
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| FRONT TRAVEL: | 160mm | ||
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| WHEEL SIZE: | 29" or MX (XS 27.5 only) | ||
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| SIZES: | XS, SM, MD, LG, XL, XXL | ||
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| FRAME BEARINGS: | 2x 6903, 2x 6902, 4x 6802, 2x 3802, 2x 6900 | ||
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| FORK AXLE TO CROWN: | 578mm (Includes headset) (XS 560mm) | ||
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| FORK OFFSET: | 44mm (XS 37mm) | ||
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| REAR SHOCK SIZE: | 205mm x 60mm (compatible with 205 x 65mm) | ||
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| SHOCK HARDWARE: | Trunnion Mount Top / 30mm x 8mm Bottom | ||
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| HEADSET (TOP): | 44mm Zero Stack | ||
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| HEADSET (BOTTOM): | 56mm Zero Stack | ||
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| BB SHELL: | 73mm BSA Threaded | ||
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| CHAINLINE: | 52-55mm | ||
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| REAR BRAKE MOUNT: | 180mm Post Mount, Max Rotor Size 223mm | ||
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| REAR AXLE: | Transition Axle For UDH, 12mm x 148mm Spacing | ||
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| ISCG TABS: | ISCG05 | ||
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| SEATPOST DIAMETER: |
31.6mm | ||
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| SEAT CLAMP: | Carbon: 37.0mm Alloy: 34.9mm |
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| MAX SEATPOST INSERTION: | Carbon: X-Small 245mm | Small 245mm | Medium 275mm | Large 315mm | X-Large 345mm | XX-Large 375mm Alloy: X-Small 225mm | Small 225mm | Medium 260mm | Large 310mm | X-Large 325mm | XX-Large 340mm |
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| MAX CHAINRING SIZE: | 34T Standard Single Ring | ||
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| MAX TIRE SIZE: | 29" x 2.5" | ||
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| REAR SHOCK SAG: | 150mm/60mm: 16-20mm (26-32%) | ||
Specs
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