Cascade 3
OverviewAbout the Polygon Cascade 3
The Polygon Cascade 3 is a mountain bike, built on an aluminium frame, listed at $549.99 at BikesOnline. An off-road bike for trails, with grippy tyres and trail-ready geometry.
How it comparesThe Cascade 3 against similarly priced bikes
- At $549.99 it costs less than 96% of the 223 mountain bikes we list.
- Head angle: 68.0 degrees, about the same as similarly priced hardtail mountain bikes (middle 68.3 degrees).
- Front travel: 100 mm, about the same as similarly priced hardtail mountain bikes (middle 100 mm).
- Lowest gear ratio: 0.80, taller (harder on steep climbs) than the middle of similarly priced hardtail mountain bikes (0.71).
- Gears at the back: 8-speed, about the same as similarly priced hardtail mountain bikes (middle 8-speed).
- Stock tyre width: 57 mm, about the same as similarly priced hardtail mountain bikes (middle 57 mm).
Closest alternatives on price
same price
$49 more
$50 more
$100 more · 9-speed vs 8-speed
Compare the Cascade 3 with the two closest side by side
Compared with the 8 similar mountain bikes on BikeFinder priced $400 to $750, using each bike's published specs and the price shown on its page.
SizingWhat size Cascade 3 do I need?
Enter your height to see the size Polygon recommends.
| Size | Rider height | In feet |
|---|---|---|
| S (27.5") | 155 to 165 cm | 5 ft 1 in to 5 ft 5 in |
| M (27.5") | 165 to 175 cm | 5 ft 5 in to 5 ft 9 in |
| M (29") | 165 to 175 cm | 5 ft 5 in to 5 ft 9 in |
| L (29") | 175 to 185 cm | 5 ft 9 in to 6 ft 1 in |
| XL (29") | 185 to 195 cm | 6 ft 1 in to 6 ft 5 in |
Rider heights from Polygon's size chart. Height is a starting point: arm and leg length, flexibility and riding style all matter, so a test ride beats any chart. How bike sizing works.
SpecificationsWhat we know
- Brand
- Polygon
- Category
- Mountain
- Frame
- Aluminium
- Wheel size
- 29-inch (27.5-inch on the smaller sizes)
- Drivetrain
- Shimano Altus 1x8
- Brakes
- Disc
- Frame sizes
- S (27.5"), M (27.5"), M (29"), L (29"), XL (29")
- Price
- $549.99 at BikesOnline, was $769.99. In stock, checked 3 Nov 2026.
Specs and pricing are listed in AUD and sourced from Australian retail listings. Confirm the current details and availability with the seller before purchase.
GeometrySize M (29 inch)
- Stack
- 624 mm
- Reach
- 420 mm
- Stack/reach
- 1.49
- Head angle
- 68 deg
- Seat angle
- 75 deg
- Wheelbase
- 1142 mm
- Chainstay
- 455 mm
- BB drop
- 69 mm
- Standover
- 737 mm
GearingRatios
Ratios are derived from the chainrings and cassette. They describe the gearing, not any rider's ability.
Drivetrain & buildFull specification
- Groupset
- Shimano Altus
- Shifting
- Mechanical
- Drive
- 1x
- Speeds
- 8
- Crank
- Prowheel CY10, 170mm
- Chainrings
- 36
- Cassette
- Shimano ESSA CS-HG400, 11-45T, 8-Speed
- Rear derailleur
- Shimano ESSA ERD-U2000, 8-Speed
- Brakes
- Clarks Clout Hydraulic Disc, 2-Piston
- Rotors
- 160mm
- Wheelset
- Polygon Alloy Double Wall, 21mm Inner Width, 32H
- Rim internal width
- 21 mm
- Stock tyre
- 29x2.25
- Seatpost
- Polygon Alloy, 27.2mm x 350mm, 0mm Offset
- Cockpit
- Polygon Alloy, 45mm Extension, 3 deg Rise, 31.8mm Clamp / Polygon Steel, 680mm Width, 40mm Rise, 8 deg Back Sweep
- Saddle
- Polygon Black Saddle, Steel Rails
SuspensionMTB detail
- Front travel
- 100 mm
- Fork
- SR Suntour XCE28
- Wheel config
- 29
- Suspension
- hardtail
Bike DNAWhat the numbers say
- Steering
- A 68 deg head angle points to balanced trail handling.
- Climbing
- Lowest ratio 0.8 is a very low climbing gear for steep or loaded climbs.
Derived from the published geometry and gearing above. It describes the numbers, not a ride test.
BikeFinder Data Profile: geometry and specification researched from published sources (BikesOnline product page (specification list and geometry table)), verified 2026-11-03. This is a specification analysis, not a physical ride review.
Where to buyStockist
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