Transition Sentinel Alloy Complete GX

Name: Transition Sentinel Alloy Complete GX
Brand: Transition

2020 MountainTrail Manufacturer page

Last known price: $4,399

Prices shown first for United States
Travel: 160 / 140 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 30t / 10–50t
Gear range: 500%
Weight: 15.31 kg 33.8 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 154–170
MD 164–182
LG 175–190
XL 184–200
XXL 190–207

Components

16 of 18 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.

Frame and fork

1 part

Frame

Sentinel Alloy 140mm Not identified

Suspension

2 parts

Fork
- Fox 36
Rear shock
- Fox

Drivetrain

5 parts

Brakes

2 parts

Wheels and tires

2 parts

Cockpit and contact points

6 parts

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size LG

Table

Reach 475mm

Stack 626mm

Wheelbase 1247mm

Head angle 64.0°

Seat angle 76.3°

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 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	425	450	475	500	515
Stackmm	617	617	626	635	644
Top tube lengthmm	568	593	622	650	666
Seat tube lengthmm	360	400	440	490	510
Head tube lengthmm	100	100	110	120	130
Head tube angle	64°	64°	64°	64°	64°
Seat tube angle	77.5°	76.8°	76.3°	75.8°	75.5°
Chainstay lengthmm	435	435	435	435	435
Wheelbasemm	1193	1218	1247	1277	1296
Front centermm	760	785	814	844	863
Bottom bracket dropmm	30	30	30	30	30
Bottom bracket heightmm	345	345	345	345	345
Standover heightmm	685	695	700	715	720
Fork rakemm	43	43	43	43	43
Trailmm	135	135	135	135	135
Stack/reach ratio	1.45	1.37	1.32	1.27	1.25

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
Frame material: Aluminum
Bicycle weight: 15.31 kg

33.8 lb

Suspension

Suspension configuration: Full suspension
Front travel: 160 mm
Rear travel: 140 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

Fork spring: Air
Tire width: 2.5″
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 above the central range for this class.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,348 bicycles with this information
Coverage: 93.8% of the class

Lowest gear

17.4 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,217 bicycles with this information
Coverage: 84.6% of the class

Highest gear

87.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,217 bicycles with this information
Coverage: 84.6% of the class

Shifting

Mechanical

55 of 1,437 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,437 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): 17.1–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2020
Lowest gear: 1217 bicycles with this information, 84.6% of the class
Highest gear: 1217 bicycles with this information, 84.6% 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 2020 builds
Specification	This bicycle Transition Sentinel Alloy Complete GX	Transition Sentinel Alloy Complete NX	Transition Sentinel Carbon Complete GX	Transition Sentinel Carbon Complete NX	Transition Sentinel Carbon Complete XO1
Frame
Frame material	Aluminum	Aluminum	Carbon	Carbon	Carbon
Bicycle weight	15.31 kg	15.72 kg	14.33 kg	14.42 kg	13.83 kg
Drivetrain
Smallest sprocket	10	11	10	11	10
Highest gear	87.0 in	79.1 in	87.0 in	79.1 in	87.0 in
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Dropper seatpost	Rigid seatpost	Dropper seatpost