Transition Sentinel XO1

Name: Transition Sentinel XO1
Brand: Transition

2018 MountainEnduro Manufacturer page

Last known price: $5,999

Prices shown first for United States
Fork travel: 160 mm
Wheels: 29″
Drivetrain: 1 × 12 30t / 10–50t
Gear range: 500%
Weight: 13.51 kg 29.8 lb · Reference configuration not specified
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 154–170
MD 164–182
LG 175–190
XL 184–200

Components

18 of 21 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Suspension

2 parts

Fork
- Fox 36
Rear shock
- Fox

Drivetrain

7 parts

Bottom bracket

73mm BSA Threaded Not identified
Cassette
- SRAM XG-1275 Eagle 12 speeds 10–50t
XG-1275
Chain
- SRAM GX Eagle 12 speeds
Crankset
- SRAM 30t
Front derailleur

No Support Not identified
Rear derailleur
- SRAM Eagle AXS S500 12 speeds
Shifters
- SRAM

Brakes

2 parts

Wheels and tires

4 parts

Cockpit and contact points

6 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 450mm

Stack 617mm

Wheelbase 1218mm

Head angle 64.0°

Seat angle 76.8°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	425	450	475	500
Stackmm	617	617	626	635
Top tube lengthmm	568	593	622	650
Seat tube lengthmm	360	400	440	490
Head tube lengthmm	100	100	110	120
Head tube angle	64°	64°	64°	64°
Seat tube angle	77.5°	76.8°	76.3°	75.8°
Chainstay lengthmm	435	435	435	435
Wheelbasemm	1193	1218	1247	1277
Front centermm	760	785	814	844
Bottom bracket dropmm	30	30	30	30
Bottom bracket heightmm	345	345	345	345
Standover heightmm	685	695	700	715
Fork rakemm	43	43	43	43
Trailmm	135	135	135	135
Stack/reach ratio	1.45	1.37	1.32	1.27

Not published by the manufacturer: Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Bicycle weight: 13.51 kg

29.8 lb

Suspension

Suspension configuration: Full suspension
Front travel: 160 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 50
Lowest gear: 17.4 in
Highest gear: 87.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.3″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

4 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

160 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2018
Sample: 538 bicycles with this information
Coverage: 97.1% of the class

Lowest gear

17.4 gear inches

This value is below the central range for this class.

Cohort: Mountain / Enduro Model year: 2018
Sample: 464 bicycles with this information
Coverage: 83.7% of the class

Highest gear

87.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2018
Sample: 464 bicycles with this information
Coverage: 83.7% of the class

Shifting

Mechanical

16 of 554 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2018
Sample: 554 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.7 km/h
Highest gear: 33.3 km/h

Total gear range 500%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 17.4–87.0 gear inches
Class reference (p10–p90): 16.5–93.5 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Enduro Model year: 2018
Lowest gear: 464 bicycles with this information, 83.7% of the class
Highest gear: 464 bicycles with this information, 83.7% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2018 builds

Differences across 2018 builds
Specification	This bicycle Transition Sentinel XO1	Transition Sentinel Carbon GX	Transition Sentinel Carbon X01	Transition Sentinel GX	Transition Sentinel NX	Transition Sentinel X01
Frame
Bicycle weight	13.51 kg	13.65 kg	13.47 kg	13.69 kg	15.24 kg	14.71 kg
Frame material	Not informed	Carbon	Carbon	Aluminum	Aluminum	Aluminum
Suspension
Rear travel	Not informed	140 mm	140 mm	140 mm	140 mm	140 mm
Drivetrain
Smallest chainring	30	30	30	30	28	30
Largest chainring	30	30	30	30	28	30
Rear sprockets	12	12	12	12	11	12
Smallest sprocket	10	10	10	10	11	10
Largest sprocket	50	50	50	50	42	50
Lowest gear	17.4 in	17.4 in	17.4 in	17.4 in	19.3 in	17.4 in
Highest gear	87.0 in	87.0 in	87.0 in	87.0 in	73.8 in	87.0 in