2020 Transition Bikes Sentinel Base

Design
Flat Bar, Full suspension
Frame
Carbon/Composite
Suspension
160mm fork travel
Features
Disc brake
Somewhat upright stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Geometry

SM
MD
LG
XL
XXL
Stack
613mm
622mm
631mm
640mm
649mm
Reach
420mm
450mm
476mm
501mm
521mm
Stack to Reach Ratio
1.46:1
1.38:1
1.33:1
1.28:1
1.25:1
Seat Tube Length, Unknown
350mm
390mm
430mm
460mm
490mm
Top Tube Length, Effective/Horizontal Unknown
552mm
585mm
613mm
641mm
665mm
Top Tube Slope
27.8deg
23.7deg
20deg
17.5deg
15.3deg
Head Tube Angle
63.6deg
63.6deg
63.6deg
63.6deg
63.6deg
Seat Tube Angle
70.8deg
70.8deg
70.8deg
70.8deg
70.8deg
Effective Seat Tube Angle, Unknown
78.2deg
77.5deg
76.9deg
76.4deg
76deg
Head Tube Length
100mm
110mm
120mm
130mm
140mm
Bottom Bracket Drop
29mm
29mm
29mm
29mm
29mm
Bottom Bracket Height
343mm
343mm
343mm
343mm
343mm
Chainstay Length
440mm
440mm
440mm
440mm
440mm
Chainstay Length Horizontal
439mm
439mm
439mm
439mm
439mm
Front-Center
760.5mm
794.5mm
824.5mm
853.5mm
877.4mm
Front-Center Horizontal
760mm
794mm
824mm
853mm
877mm
Wheelbase
1199mm
1233mm
1263mm
1292mm
1316mm
Fork Offset/Rake
43mm
43mm
43mm
43mm
43mm
Trail
136.6mm
very high
136.6mm
very high
136.6mm
very high
136.6mm
very high
136.6mm
very high
Mechanical Trail
122.4mm
122.4mm
122.4mm
122.4mm
122.4mm
Wheel Flop
54.4mm
54.4mm
54.4mm
54.4mm
54.4mm
Standover Height
671mm
688mm
700mm
712mm
722mm
Tire to Pedal Spindle
218.6mm
170 mm cranks
252.5mm
170 mm cranks
282.5mm
170 mm cranks
311.5mm
170 mm cranks
335.5mm
170 mm cranks
Pedal Spindle to Ground Clearance
173mm
170 mm cranks
173mm
170 mm cranks
173mm
170 mm cranks
173mm
170 mm cranks
173mm
170 mm cranks

Base Build

SM
MD
LG
XL
XXL
Wheel Size
700C/29"
622 mm BSD
700C/29"
622 mm BSD
700C/29"
622 mm BSD
700C/29"
622 mm BSD
700C/29"
622 mm BSD
Tire Width
2.4in
2.4in
2.4in
2.4in
2.4in
Tire Outer Diameter
743.9mm
743.9mm
743.9mm
743.9mm
743.9mm
Bike Length with Tires
1942.9mm
1976.9mm
2006.9mm
2035.9mm
2059.9mm

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 Scale
Source:https://www.transitionbikes.com/Bikes_Sentinel2.cfm#GEO