Collosus N9
OverviewAbout the Polygon Collosus N9
The Polygon Collosus N9 is a mountain bike, built on an aluminium frame, listed at $4,399.99 at BikesOnline. An off-road bike for trails, with grippy tyres and trail-ready geometry.
How it comparesThe Collosus N9 against similarly priced bikes
- At $4,399.99 it sits in the upper part of the range: 57% of the 223 mountain bikes we list cost less.
- Head angle: 63.5 degrees, slacker, so steadier on descents than the middle of similarly priced full-suspension mountain bikes (64.5 degrees).
- Front travel: 170 mm, more than the middle of similarly priced full-suspension mountain bikes (150 mm).
- Rear travel: 170 mm, more than the middle of similarly priced full-suspension mountain bikes (145 mm).
- Reach (size M): 460 mm, about the same as similarly priced full-suspension mountain bikes (middle 460 mm).
- Lowest gear ratio: 0.63, about the same as similarly priced full-suspension mountain bikes (middle 0.62).
- Gears at the back: 12-speed, about the same as similarly priced full-suspension mountain bikes (middle 12-speed).
Closest alternatives on price
same price · carbon frame · 160 mm fork vs 170 mm
$100 less
$100 less · 140 mm fork vs 170 mm
$100 more · 140 mm fork vs 170 mm
Compare the Collosus N9 with the two closest side by side
Compared with the 30 similar mountain bikes on BikeFinder priced $3,100 to $5,950, using each bike's published specs and the price shown on its page.
SizingWhat size Collosus N9 do I need?
Enter your height to see the size Polygon recommends.
| Size | Rider height | In feet |
|---|---|---|
| S | 155 to 165 cm | 5 ft 1 in to 5 ft 5 in |
| M | 165 to 175 cm | 5 ft 5 in to 5 ft 9 in |
| L | 175 to 185 cm | 5 ft 9 in to 6 ft 1 in |
| XL | 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
- Model year
- 2025
- Category
- Mountain
- Frame
- Aluminium
- Wheel size
- 29-inch
- Drivetrain
- Shimano XT 1x12
- Brakes
- Disc
- Frame sizes
- S, M, L, XL
- Price
- $4,399.99 at BikesOnline, was $5,499.99. 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
- Stack
- 630 mm
- Reach
- 460 mm
- Stack/reach
- 1.37
- Head angle
- 63.5 deg
- Seat angle
- 77 deg
- Wheelbase
- 1244 mm
- Chainstay
- 435 mm
- BB drop
- 27 mm
- Standover
- 716 mm
GearingRatios
Ratios are derived from the chainrings and cassette. They describe the gearing, not any rider's ability.
Drivetrain & buildFull specification
- Groupset
- Shimano XT
- Shifting
- Mechanical
- Drive
- 1x
- Speeds
- 12
- Crank
- Shimano XT FC-M8100-1, 170mm, Max Chainring: 34T
- Chainrings
- 32
- Cassette
- Shimano SLX CS-M7100, 12-Speed, 10-51T, Microspline
- Rear derailleur
- Shimano XT RD-M8100, 12-Speed
- Brakes
- Shimano XT M8120 4-Piston Hydraulic Brakes
- Rotors
- 203mm
- Wheelset
- Polygon MT6 Alloy Double Wall, 30mm Inner Width, Tubeless Ready
- Rim internal width
- 30 mm
- Stock tyre
- 29x2.5
- Tubeless
- Yes
- BB standard
- Threaded
- Seatpost
- Tranz X JD-YSP23KL, 34.9mm, 150mm (S, M) / 170mm (L, XL)
- Cockpit
- Raceface Aeffect R35, Length: 40mm, Bar Bore: 35mm / Raceface Aeffect R35, Length: 780mm, Rise: 20mm, Bar Bore: 35mm
- Saddle
- Xtent, Cr-MO 7mm
- UDH
- Yes
SuspensionMTB detail
- Front travel
- 170 mm
- Rear travel
- 170 mm
- Fork
- Fox 38 Performance
- Fork stanchions
- 38 mm
- Shock
- Fox Float X2
- Wheel config
- 29
- Dropper
- Tranz X JD-YSP23KL
- Dropper travel
- 150 mm
- Discipline
- Enduro
- Suspension
- full suspension
Bike DNAWhat the numbers say
- Steering
- A 63.5 deg head angle points to very slack, built for steep descending.
- Climbing
- Lowest ratio 0.63 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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