2025 Transition Bikes Sentinel Carbon
- Category
- Full-suspension Trail MTB
- Design
- Flat Bar, Full suspension
- Frame
- Carbon/Composite
- Suspension
- 160mm fork travel, 150mm rear travel
- Features
- Disc brake
Geometry
XL | XXL | |
Stack | 642mm | 651mm |
Reach | 505mm | 530mm |
Stack to Reach Ratio | 1.27:1 | 1.23:1 |
Seat Tube Length, C-T | 460mm | 490mm |
Top Tube Length, Effective/Horizontal HT Top | 632mm | 660mm |
Head Tube Angle | 64deg | 64deg |
Effective Seat Tube Angle, ETT Center | 77.9deg | 77.6deg |
Head Tube Length | 130mm | 140mm |
Bottom Bracket Drop | 25mm | 25mm |
Bottom Bracket Height | 347mm | 347mm |
Chainstay Length | 448mm | 448mm |
Chainstay Length Horizontal | 447.3mm | 447.3mm |
Front-Center | 855.1mm | 885.1mm |
Front-Center Horizontal | 854.7mm | 884.7mm |
Wheelbase | 1302mm | 1332mm |
Fork Offset/Rake | 44mm | 44mm |
Fork Length (Axle-To-Crown) | 578mm | 578mm |
Trail | 132.5mm very high | 132.5mm very high |
Mechanical Trail | 119.1mm | 119.1mm |
Wheel Flop | 52.2mm | 52.2mm |
Tire to Pedal Spindle | 313.1mm 170 mm cranks | 343.1mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 177mm 170 mm cranks | 177mm 170 mm cranks |
Carbon Build
XL | XXL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.4in | 2.4in |
Tire Width Max | 2.5in | 2.5in |
Tire Outer Diameter | 743.9mm | 743.9mm |
Bike Length with Tires | 2045.9mm | 2075.9mm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Full-suspension Trail MTBSource:https://www.transitionbikes.com/Bikes/Sentinel