Polygon Cascade 3

2026 MountainCross-country Manufacturer page

Last known price: $399

Prices shown first for United States
Travel: 100 / 135 mm Fork / rear shock
Wheels: 27.5″, 29″
Drivetrain: 1 × 8 36t / 11–45t
Gear range: 409%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 155–166
SM 155–166
MD 164–176
MD 164–176
LG 174–185
LG 174–185

Components

9 of 23 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

aluminum Not identified

Suspension

1 part

Fork
- SR Suntour XCE28

Drivetrain

6 parts

Bottom bracket

SQUARE BB, 68mm Not identified
Cassette
- Shimano CS-HG400 11–45t
CS-HG400
Chain
- KMC Z8.3 8 speeds
Z-8
Crankset
- Prowheel 36t
Rear derailleur
- Shimano Essa RD-U2000 8 speeds
RD-U2000
Shifters
- Shimano Altus SL-M315
SL-M315

Brakes

3 parts

Brake levers

HYDRAULIC DISC BRAKE Not identified
Brakes

HYDRAULIC DISC BRAKE Not identified
Disc rotors

6-BOLTS 160mm Not identified

Wheels and tires

5 parts

Front hub

ALLOY, 100mm 32H QR Not identified
Rear hub

ALLOY, 135mm 32H QR Not identified
Rims

ALLOY DOUBLE WALL Not identified
Spokes

27.5" F: 14G STAINLESS NDS:270mm / DS:272mm / R: : 14G STAINLESS NDS:270mm / DS:272mm / 29" F: 14G STAINLESS NDS:290mm / DS:292, 12mm NIPPLE BRASS / R: 14G STAINLESS NDS:290mm / DS:292, 12mm NIPPLE BRASS Not identified
Tires

27.5" / 29"x2.25" Not identified

Cockpit and contact points

7 parts

Grips
- Polygon
Handlebar
- Polygon
Headset

ZERO STACK W/ SEALED BEARING, ZS 44/28.6 | ZS 44/30 Not identified
Pedals

ONE PIECE PP BODY Not identified
Saddle

BLACK STEEL ø7mm Not identified
Seatpost

ALLOY SEATPOST 27.2x350mm Not identified
Stem
- Polygon

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 420mm

Stack 606mm

Wheelbase 1129mm

Head angle 68.0°

Seat angle 75.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	400	420	420	420	440	440
Stackmm	601	624	606	624	610	629
Top tube lengthmm	561	566	582	585	603	604
Seat tube lengthmm	390	390	430	430	460	460
Head tube lengthmm	115	90	120	95	125	100
Head tube angle	68°	68°	68°	68°	68°	68°
Seat tube angle	75°	74°	75°	75°	73°	75°
Chainstay lengthmm	440	455	440	455	440	455
Wheelbasemm	1108	1142	1129	1142	1151	1161
Front centermm	672	696	693	696	715	715
Bottom bracket dropmm	-45	-69	-45	-69	-45	-69
Bottom bracket heightmm	310	304	310	303	310	304
Standover heightmm	703	737	733	737	756	759
Fork rakemm	9	9	8	8	8	—
Trailmm	134	159	135	159	135	162
Stack/reach ratio	1.50	1.49	1.44	1.49	1.39	1.43
Suspension and parts
Crank lengthmm	170	170	170	170	170	170
Handlebar widthmm	680	680	680	680	680	680
Stem lengthmm	45	45	45	45	45	45

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

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum

Suspension

Suspension configuration: Full suspension
Front travel: 100 mm
Rear travel: 135 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 36
Largest chainring: 36
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 45
Lowest gear: 23.2 in
Highest gear: 94.9 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 27.5″, 29″

Technical analysis

2 measures

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

Front travel

100 mm

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2026
Sample: 1,209 bicycles with this information
Coverage: 90.0% of the class

Shifting

Mechanical

156 of 1,318 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2026
Sample: 1,318 bicycles with this information
Coverage: 98.2% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 8.9 km/h
Highest gear: 36.4 km/h

Total gear range 409%

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: 23.2–94.9 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 Cascade 3	Polygon Cascade 20	Polygon Cascade 2	Polygon Cascade 24	Polygon Cascade 4	Polygon Cascade 5
Frame
Fork material	Not informed	Aluminum	Not informed	Aluminum	Not informed	Not informed
Suspension
Suspension configuration	Full suspension	Hardtail	Hardtail	Hardtail	Hardtail	Hardtail
Front travel	100 mm	40 mm	100 mm	50 mm	100 mm	100 mm
Rear travel	135 mm	Not informed	Not informed	Not informed	Not informed	Not informed
Drivetrain
Front chainrings	1	1	3	1	1	1
Smallest chainring	36	30	24	32	36	36
Largest chainring	36	30	42	32	36	36
Rear sprockets	8	7	7	7	10	10
Smallest sprocket	11	14	14	14	11	11
Largest sprocket	45	28	28	28	46	48
Lowest gear	23.2 in	21.4 in	23.6 in	27.4 in	22.7 in	21.8 in
Highest gear	94.9 in	42.9 in	82.5 in	54.9 in	94.9 in	94.9 in
Brakes
Brake type	Hydraulic disc	Mechanical disc	Mechanical disc	Mechanical disc	Hydraulic disc	Hydraulic disc
Other specifications
Suspension	Full suspension	Hardtail	Hardtail	Hardtail	Hardtail	Hardtail
Tire width	2.25″	1.95″	2.25″	2.1″	2.25″	2.25″
Wheel size	27.5″ / 29″	20″	27.5″	24″	27.5″ / 29″	27.5″ / 29″
Bottom bracket standard	Not informed	BSA	Not informed	BSA	Not informed	Not informed
Tire clearance	Not informed	Maximum tire width: 1.95″	Maximum tire width: 2.25″	Maximum tire width: 2.1″	Maximum tire width: 2.25″	Maximum tire width: 2.25″