Polygon Premier 20 Disc EVO

Name: Polygon Premier 20 Disc EVO
Brand: Polygon

2025 YouthGeneral youth Manufacturer page

Last known price: $549

Prices shown first for United States
Suspension: Rigid
Wheels: 20″
Drivetrain: 1 × 8 36t / 11–38t
Gear range: 345%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

3'5"–4'3"

The manufacturer did not publish rider heights for these sizes.

Components

10 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 XC Sport Alloy Frame, Threaded BSA 68mm Bottom Bracket, IS Mount Disc Brake 160mm, M10x135mm Rear Spacing, External Cable Routing, Bolt-On Centre Kickstand Mount Not identified

Suspension

1 part

Fork

Steel Rigid Fork, Straight 1-1/8” Threadless Steerer, IS Mount Disc Brake 160mm, 9x100mm Quick Release Not identified

Drivetrain

6 parts

Bottom bracket

BSA, 68mm, threaded Not identified
Cassette
- microSHIFT
CS-H803
Chain
- KMC Z8.3 8 speeds
Crankset

36T, Max Capacity 36T Not identified
Rear derailleur
- microSHIFT Acolyte Super Short Cage SpringLock 8 speeds
RD-M5185S
Shifters
- microSHIFT Acolyte Quick Trigger Shifter 1×8 Indicator 8 speeds
SL-M6280

Brakes

2 parts

Brakes
- Tektro HD-J285
HD-J285
Disc rotors
- Tektro

Wheels and tires

4 parts

Front hub

Solon DH802F, 9x100mm Quick Release, 32H Not identified
Rear hub

Solon DH802R, M10x135mm Quick Release, 32H Not identified
Rims
- Polygon
Tires
- Vee Tire

Cockpit and contact points

7 parts

Grips
- Polygon
Handlebar

Alloy Handlebar, 580mm Width, 25.4mm Bore, 30mm Rise, 6° Bend Not identified
Headset

Zero Stack, Caged Bearing, S.H.I.S.: ZS44/28.6 | ZS44/30 Not identified
Pedals

One-Piece PP Body Platform Pedals Not identified
Saddle
- Polygon
Seatpost

Alloy Seatpost, 27.2x250mm, 0mm Offset Not identified
Stem

Alloy Stem, 40mm Length, 25.4mm Clamp, 7° Rise 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 3'5"–4'3"

Table

Reach 321mm

Stack 429mm

Wheelbase 892mm

Head angle 69.0°

Seat angle 72.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 20″ 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
Frame
Reachmm	321
Stackmm	429
Top tube lengthmm	460
Seat tube lengthmm	255
Head tube lengthmm	100
Head tube angle	69°
Seat tube angle	72°
Chainstay lengthmm	370
Wheelbasemm	892
Front centermm	523
Bottom bracket dropmm	-20
Bottom bracket heightmm	234
Standover heightmm	553
Fork rakemm	42
Stack/reach ratio	1.34
Suspension and parts
Handlebar widthmm	580
Stem lengthmm	40
Seatpost lengthmm	220

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

Specifications

Frame and fork

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

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 36
Largest chainring: 36
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 38
Lowest gear: 19.0 in
Highest gear: 65.5 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
Tire clearance: Maximum tire width: 2.25″
Tire width: 2.25″
Travel: Front: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 20″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.3 km/h
Highest gear: 25.1 km/h

Total gear range 345%

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: 19.0–65.5 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 2025 builds

Differences across 2025 builds
Specification	This bicycle Polygon Premier 20 Disc EVO	Polygon Premier 20	Polygon Premier 20 Disc	Polygon Premier 24	Polygon Premier 24 Disc	Polygon Premier 24 XC
Frame
Fork material	Steel	Steel	Steel	Steel	Steel	Not informed
Suspension
Suspension configuration	Rigid	Rigid	Rigid	Rigid	Rigid	Hardtail
Front travel	Not informed	Not informed	Not informed	Not informed	Not informed	50 mm
Drivetrain
Smallest chainring	36	32	36	32	36	32
Largest chainring	36	32	36	32	36	32
Rear sprockets	8	7	7	7	7	7
Smallest sprocket	11	14	12	14	12	14
Largest sprocket	38	28	32	28	32	28
Lowest gear	19.0 in	22.9 in	22.5 in	27.4 in	27.0 in	27.4 in
Highest gear	65.5 in	45.7 in	60.0 in	54.9 in	72.0 in	54.9 in
Brakes
Brake type	Hydraulic disc	Rim brake	Mechanical disc	Rim brake	Mechanical disc	Rim brake
Other specifications
Bottom bracket standard	BSA	Not informed	BSA	Not informed	BSA	Not informed
Suspension	Rigid	Rigid	Rigid	Rigid	Rigid	Hardtail
Tire clearance	Maximum tire width: 2.25″	Not informed	Maximum tire width: 2.25″	Not informed	Maximum tire width: 2.25″	Not informed
Tire width	2.25″	2.1″	2.25″	1.75″	2.25″	1.75″
Wheel size	20″	20″	20″	24″	24″	24″
Fork spring	Not informed	Not informed	Not informed	Not informed	Not informed	Coil