Polygon Xtrada 24

Name: Polygon Xtrada 24
Brand: Polygon

2026 YouthMountain youth Manufacturer page

Last known price: $999

Prices shown first for United States
Fork travel: 80 mm
Wheels: 700c
Drivetrain: 1 × 10 30t / 11–48t
Gear range: 436%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

One Size 124.5–149.9

Components

11 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.

Frame and fork

1 part

Frame

Alx Junior Alloy, Post Mount, QR/Nut 10 × 135MM Rear Spacing, Tapered 44/56MM Head Tube, BSA Threaded 73MM BB, Internal Brake And Shifter Routing, Replaceable Dropout Not identified

Suspension

1 part

Fork
- Polygon

Drivetrain

6 parts

Brakes

2 parts

Wheels and tires

4 parts

Front hub

Alloy, QR 9 × 100MM, 32H, 6-Bolt Not identified
Rear hub

Alloy, QR 10 × 135MM, 32H, 6-Bolt, Cassette Not identified
Rims

Alloy Double Wall, 30MM Width, 23MM Height Not identified
Tires
- WTB

Cockpit and contact points

7 parts

Grips

Standard Not identified
Handlebar
- Polygon
Headset

Zero Stack, Caged Bearing, ZS 44/28.6 | ZS 56/30 Not identified
Pedals

One-Piece PP Body Not identified
Saddle

Black, Steel Rails, 7MM Not identified
Seatpost
- Polygon
Stem
- Polygon

Sizes and geometry

1 size Open in the geometry plotter

Enter your height to highlight matching ranges.

Size One Size

Table

Reach 345mm

Stack 541mm

Wheelbase 1028mm

Head angle 65.0°

Seat angle 70.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	345
Stackmm	540.5
Top tube lengthmm	490
Seat tube lengthmm	321
Head tube lengthmm	90
Head tube angle	65°
Seat tube angle	70°
Chainstay lengthmm	400
Wheelbasemm	1028.28
Front centermm	630
Bottom bracket dropmm	30
Bottom bracket heightmm	288
Standover heightmm	583.3
Fork rakemm	42
Stack/reach ratio	1.57
Suspension and parts
Crank lengthmm	140
Handlebar widthmm	640
Stem lengthmm	45

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

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 80 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 48
Lowest gear: 18.1 in
Highest gear: 79.1 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire clearance: Maximum tire width: 2.4″
Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

1 measure

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

Shifting

Mechanical

9 of 321 bicycles with this information use electronic shifting.

Cohort: Youth / Mountain youth Model year: 2026
Sample: 321 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.9 km/h
Highest gear: 30.3 km/h

Total gear range 436%

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: 18.1–79.1 gear inches

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 2026 builds
Specification	This bicycle Polygon Xtrada 24	Polygon Xtrada 20	Polygon Xtrada 5	Polygon Xtrada 6	Polygon Xtrada 7
Frame
Fork material	Aluminum	Aluminum	Not informed	Not informed	Not informed
Suspension
Front travel	80 mm	60 mm	120 mm	120 mm	120 mm
Drivetrain
Smallest chainring	30	30	32	32	32
Largest chainring	30	30	32	32	32
Rear sprockets	10	9	10	12	12
Smallest sprocket	11	11	11	10	10
Largest sprocket	48	38	48	51	52
Lowest gear	18.1 in	15.8 in	19.3 in	18.2 in	17.9 in
Highest gear	79.1 in	54.6 in	84.4 in	92.8 in	92.8 in
Cockpit
Seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Dropper seatpost	Dropper seatpost
Derailleur hanger	Not informed	Not informed	UDH	UDH	UDH
Other specifications
Fork spring	Air	Air	Coil	Not informed	Not informed
Tire clearance	Maximum tire width: 2.4″	Maximum tire width: 2.4″	Maximum tire width: 2.25″	Maximum tire width: 2.25″	Maximum tire width: 2.25″
Wheel size	700c	20″	29″	29″	29″

Changes since 2025
Specification	2025 Polygon Xtrada 24	This bicycle Polygon Xtrada 24
Frame
Fork material	Not informed	Aluminum
Drivetrain
Largest sprocket	42	48
Lowest gear	20.7 in	18.1 in
Brakes
Brake type	Mechanical disc	Hydraulic disc
Other specifications
Bottom bracket standard	Not informed	BSA
Tire clearance	Not informed	Maximum tire width: 2.4″