Xtrada 20
OverviewAbout the Polygon Xtrada 20
The Polygon Xtrada 20 is a kids bike, built on an aluminium frame, listed at $1,299.99 at BikesOnline. A bike sized and geared for younger riders.
How it comparesThe Xtrada 20 against similarly priced bikes
- At $1,299.99 it sits in the upper part of the range: 89% of the 55 kids bikes we list cost less.
- Gears at the back: 9-speed, more than the middle of similarly priced kids bikes (8-speed).
- Stock tyre width: 57 mm, narrower than the middle of similarly priced kids bikes (60 mm).
Closest alternatives on price
same price · 8-speed vs 9-speed · 80 mm fork vs 60 mm · 66 mm tyres vs 57 mm
$199 more
$300 more
$300 more · 11-speed vs 9-speed
Compare the Xtrada 20 with the two closest side by side
Compared with the 8 similar kids bikes on BikeFinder priced $900 to $1,750, using each bike's published specs and the price shown on its page.
SpecificationsWhat we know
- Brand
- Polygon
- Category
- Kids
- Frame
- Aluminium
- Wheel size
- 20-inch
- Drivetrain
- microSHIFT 1x9
- Brakes
- Disc
- Frame sizes
- One size
- Price
- $1,299.99 at BikesOnline. 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 One size
- Stack
- 500 mm
- Reach
- 310 mm
- Stack/reach
- 1.61
- Head angle
- 66 deg
- Seat angle
- 75 deg
- Wheelbase
- 912 mm
- Chainstay
- 340 mm
- BB drop
- 10 mm
- Standover
- 560 mm
GearingRatios
Ratios are derived from the chainrings and cassette. They describe the gearing, not any rider's ability.
Drivetrain & buildFull specification
- Groupset
- microSHIFT
- Shifting
- Mechanical
- Drive
- 1x
- Speeds
- 9
- Crank
- 127mm, alloy, Square taper
- Chainrings
- 30
- Cassette
- Microshift CS-H093, 9-speed, 11-38T
- Rear derailleur
- Microshift RD-M6195-S, 9-speed, Direct Attach
- Brakes
- Tektro HD-J3120, hydraulic disc, Post Mount, 2-Piston
- Rotors
- 160mm
- Wheelset
- Alloy double wall, 30mm width, 23mm height
- Stock tyre
- 20x2.25
- Fork material
- Polygon Custom Kids Air Fork suspension fork
- BB standard
- BSA threaded
- Seatpost
- Polygon Sport, 30.9 x 250mm
- Cockpit
- Polygon Sport, 45mm, 3 deg rise, 31.8mm clamp / Polygon Sport, 580mm, 20mm rise, 6 deg backsweep, 31.8mm clamp
- Saddle
- Black, steel rails, 7mm
SuspensionMTB detail
- Front travel
- 60 mm
- Fork
- Polygon Custom Kids Air Fork
- Suspension
- hardtail
Bike DNAWhat the numbers say
- Position
- Stack-to-reach 1.61 gives an upright, comfort-oriented riding position.
- Steering
- A 66 deg head angle points to stable, relaxed steering.
- Climbing
- Lowest ratio 0.79 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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