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Mountain
Polygon

Cascade 5

Aluminium29-inch (27.5-inch on the smaller sizes)Mountain
$749.99
at BikesOnline, was $969.99. In stock, checked 3 Nov 2026.
All Polygon prices
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AluminiumFrame
◎
29-inch (27.5-inch on the smaller sizes)Wheel size
⚙
Shimano CUES 1x10Drivetrain
◉
DiscBrakes
SizesXS (27.5")S (27.5")M (29")L (29")XL (29")Which size?

OverviewAbout the Polygon Cascade 5

The Polygon Cascade 5 is a mountain bike, built on an aluminium frame, listed at $749.99 at BikesOnline. An off-road bike for trails, with grippy tyres and trail-ready geometry.

aluminiumdisc brakehardtail

How it comparesThe Cascade 5 against similarly priced bikes

  • At $749.99 it costs less than 91% of the 223 mountain bikes we list.
  • Head angle: 69.0 degrees, steeper, so quicker steering than the middle of similarly priced hardtail mountain bikes (67.8 degrees).
  • Front travel: 100 mm, about the same as similarly priced hardtail mountain bikes (middle 100 mm).
  • Lowest gear ratio: 0.75, taller (harder on steep climbs) than the middle of similarly priced hardtail mountain bikes (0.70).
  • Gears at the back: 10-speed, more than the middle of similarly priced hardtail mountain bikes (8-speed).
  • Stock tyre width: 57 mm, about the same as similarly priced hardtail mountain bikes (middle 57 mm).
  • No dropper post as standard; 0 of 9 similarly priced hardtail mountain bikes include one.

Closest alternatives on price

Compare the Cascade 5 with the two closest side by side

Compared with the 25 similar mountain bikes on BikeFinder priced $500 to $1,000, using each bike's published specs and the price shown on its page.

SizingWhat size Cascade 5 do I need?

cm

Enter your height to see the size Polygon recommends.

Polygon Cascade 5 size chart
SizeRider heightIn feet
XS (27.5")145 to 155 cm4 ft 9 in to 5 ft 1 in
S (27.5")155 to 165 cm5 ft 1 in to 5 ft 5 in
M (29")165 to 175 cm5 ft 5 in to 5 ft 9 in
L (29")175 to 185 cm5 ft 9 in to 6 ft 1 in
XL (29")185 to 195 cm6 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 CUES 1x10
Brakes
Disc
Frame sizes
XS (27.5"), S (27.5"), M (29"), L (29"), XL (29")
Price
$749.99 at BikesOnline, was $969.99. 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)

REACH420STACK624WHEELBASE1,142CHAINSTAY45569.0°74.0°
Polygon Cascade 5, size M (29 inch). Published geometry, drawn to scale (BB drop or fork offset not published, typical value used).
Stack
624 mm
Reach
420 mm
Stack/reach
1.49
Head angle
69 deg
Seat angle
74 deg
Wheelbase
1142 mm
Chainstay
455 mm
BB drop
69 mm
Standover
736 mm

GearingRatios

0.75lowest (climbing)
3.27highest (speed)
Very low climbing gear

Ratios are derived from the chainrings and cassette. They describe the gearing, not any rider's ability.

Drivetrain & buildFull specification

Groupset
Shimano CUES
Shifting
Mechanical
Drive
1x
Speeds
10
Crank
Prowheel Charm, 170mm
Chainrings
36
Cassette
Shimano CUES CS-LG300, 10-Speed, 11-48T
Rear derailleur
Shimano CUES RD-U6000-GS, 10-Speed, w/ Clutch
Brakes
Shimano MT201 Hydraulic Disc Brake, 160 mm Rotor, 6-Bolt, 2-Piston
Rotors
160mm
Wheelset
Polygon Alloy Double Wall, 27.5"/29" , 20 mm Height, 21 mm Internal Width, 32H
Rim internal width
21 mm
Stock tyre
27.5x2.25 / 29x2.25
BB standard
BSA threaded
Seatpost
Polygon Alloy, 27.2 x 350 mm, 0 mm Offset
Cockpit
Polygon Alloy, 45 mm Extension, 31.8 mm Clamp Bore, 3 deg Rise / Polygon Steel, 680 mm Width, 31.8 mm Clamp Bore, 40 mm Rise, 8 deg Bend
Saddle
Polygon Black, Steel Rail 7 mm

SuspensionMTB detail

Front travel
100 mm
Fork
Suntour XCM32
Wheel config
29
Suspension
hardtail

Bike DNAWhat the numbers say

Steering
A 69 deg head angle points to steeper, climbing and XC handling.
Climbing
Lowest ratio 0.75 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

BikesOnline
In stock, checked 3 Nov 2026
$749.99
Check size and stock →

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