Premier 20 Disc
OverviewAbout the Polygon Premier 20 Disc
The Polygon Premier 20 Disc is a kids bike, built on an aluminium frame, listed at $499.99 at BikesOnline. A bike sized and geared for younger riders.
How it comparesThe Premier 20 Disc against similarly priced bikes
- At $499.99 it sits in the upper part of the range: 52% of the 55 kids bikes we list cost less.
- Lowest gear ratio: 1.13, taller (harder on steep climbs) than the middle of similarly priced kids bikes (0.94).
- Gears at the back: 7-speed, about the same as similarly priced kids bikes (middle 7-speed).
- Stock tyre width: 57 mm, wider than the middle of similarly priced kids bikes (54 mm).
Closest alternatives on price
same price
$20 less
$20 less
$31 less
Compare the Premier 20 Disc with the two closest side by side
Compared with the 18 similar kids bikes on BikeFinder priced $350 to $650, 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
- Shimano Altus 1x7
- Brakes
- Disc
- Frame sizes
- One size
- Price
- $499.99 at BikesOnline, was $629.99. 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 One size
- Stack
- 429 mm
- Reach
- 321 mm
- Stack/reach
- 1.34
- Head angle
- 69 deg
- Seat angle
- 72 deg
- Wheelbase
- 892 mm
- Chainstay
- 370 mm
- BB drop
- 20 mm
- Standover
- 553 mm
- Fork rake
- 42 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
- 7
- Crank
- Prowheel Alloy Crank, 140mm Arm Length
- Chainrings
- 36
- Cassette
- Shimano CS-HG200-7, 12 to 32T
- Rear derailleur
- Shimano Altus RD-M310-DL, 7-Speed
- Brakes
- Tektro MD-M280 Mechanical Disc Brake
- Rotors
- 160mm
- Wheelset
- Polygon Alloy Double Wall 20", 30mm Width, 32H
- Stock tyre
- 20x2.25
- Fork material
- Steel
- BB standard
- BSA threaded
- Seatpost
- Alloy Seatpost, 27.2x250mm, 0mm Offset
- Cockpit
- Alloy Stem, 40mm Length, 25.4mm Clamp, 7 deg Rise / Alloy Handlebar, 580mm Width, 25.4mm Bore, 30mm Rise, 6 deg Bend
- Saddle
- Polygon Junior Saddle, Steel Rail 7mm
Bike DNAWhat the numbers say
- Position
- Stack-to-reach 1.34 gives a long and low, racier riding position.
- Steering
- A 69 deg head angle points to stable, relaxed steering.
- Climbing
- Lowest ratio 1.13 is endurance-friendly gearing.
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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