Principia Evoke A2.4

Name: Principia Evoke A2.4
Brand: Principia

2025 YouthMountain youth Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €679 Last known price
Wheels: 24″
Drivetrain: 1 × 7 40t / 12–32t
Gear range: 267%
Weight: 13.1 kg 28.9 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

4 of 8 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

Aluminium Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

3 parts

Cassette
- Shimano CS-HG200 12–32t
CS-HG200
Crankset

Aluminium black 40T Not identified
Rear derailleur
- Shimano Tourney

Brakes

1 part

Brakes
- Tektro
HD-M285

Wheels and tires

2 parts

Rims

24in Not identified
Tires

24x2.00 Not identified

Sizes and geometry

1 size Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 12"

Table

Reach 338mm

Stack 503mm

Wheelbase 565mm

Head angle 69.0°

Seat angle 71.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 24″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Reachmm	338
Stackmm	503
Top tube lengthmm	492
Seat tube lengthmm	306
Head tube lengthmm	110
Head tube angle	69°
Seat tube angle	71°
Chainstay lengthmm	418
Wheelbasemm	565
Bottom bracket dropmm	25
Bottom bracket heightmm	280
Standover heightmm	628
Trailmm	74
Stack/reach ratio	1.49

Not published by the manufacturer: Front center, Fork rake, 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: 13.1 kg

28.9 lb

Suspension

Suspension configuration: Hardtail

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 7
Smallest sprocket: 12
Largest sprocket: 32
Lowest gear: 30.0 in
Highest gear: 80.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 2″
Travel: Front: Additional specification: Not available: No
Wheel material: Aluminum
Wheel size: 24″

Technical analysis

3 measures

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

Lowest gear

30.0 gear inches

This value is above the central range for this class.

Cohort: Youth / Mountain youth Model year: 2025
Sample: 257 bicycles with this information
Coverage: 70.0% of the class

Highest gear

80.0 gear inches

This value is above the central range for this class.

Cohort: Youth / Mountain youth Model year: 2025
Sample: 257 bicycles with this information
Coverage: 70.0% of the class

Shifting

Mechanical

10 of 367 bicycles with this information use electronic shifting.

Cohort: Youth / Mountain youth Model year: 2025
Sample: 367 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.5 km/h
Highest gear: 30.6 km/h

Total gear range 267%

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: 30.0–80.0 gear inches
Class reference (p10–p90): 14.0–80.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2025
Lowest gear: 257 bicycles with this information, 70.0% of the class
Highest gear: 257 bicycles with this information, 70.0% 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 2025 builds
Specification	This bicycle Principia Evoke A2.4	Principia Evoke A2.0	Principia Evoke A2.6	Principia Evoke A3.9	Principia Evoke A5.9	Principia Evoke A6.9
Frame
Bicycle weight	13.1 kg	11.5 kg	13.5 kg	15 kg	15.5 kg	15.5 kg
Drivetrain
Smallest chainring	40	36	40	32	32	32
Largest chainring	40	36	40	32	32	32
Rear sprockets	7	Not informed	7	9	10	11
Smallest sprocket	12	14	12	11	11	11
Largest sprocket	32	28	32	36	42	42
Lowest gear	30.0 in	25.7 in	32.5 in	25.8 in	22.1 in	22.1 in
Highest gear	80.0 in	51.4 in	86.7 in	84.4 in	84.4 in	84.4 in
Other specifications
Fork spring	Coil	Coil	Coil	Not informed	Not informed	Air
Tire width	2″	Not informed	2.1″	2.1″	2.1″	2.1″
Wheel size	24″	20″	26″	29″	29″	29″