Reid Girls Classic 20 vs Polygon Premier 20
A side by side comparison of two kids bikes available in Australia, on price and specs. The Reid Girls Classic 20 is the lower-priced of the two.
Key differences
- Price: the Girls Classic 20 costs $110 less at the prices shown.
- Frame: steel on the Girls Classic 20, aluminium on the Premier 20.
- Gearing: 1x1 Single speed, coaster hub on the Girls Classic 20, 1x7 Shimano Tourney on the Premier 20.
Worked out from each bike's published specification and the price shown on its page. The full side by side table and a to-scale geometry overlay are below.
| 2 of 4 bikesDeltas are against the baseline | |||
|---|---|---|---|
| Price and where to buy | |||
| Current Australian price | $289.99Lowest | $399.99 | |
| RRP | $289.99 | $399.99 | |
| Price source | At Reid Cycles. In stock, checked 27 Oct 2026. | At BikesOnline, was $429.99. In stock, checked 3 Nov 2026. | |
| Retailers | Reid Cycles | BikesOnline | |
| Overview | |||
| Category | Kids | Kids | |
| Type | Non-electric | Non-electric | |
| Model year | Not published | 2024 | |
| Frame and suspension | |||
| Frame | Steel | Aluminium | |
| Fork | Steel | Steel | |
| Wheels and tyres | |||
| Wheelset | Polished alloy rims | Alloy Double Wall, CNC brake surface with wear indicator, 19mm Internal Width, 28H | |
| Wheel size | 20-inch | 20-inch | |
| Stock tyres | 20x1.75 | 20x1.75 | |
| Drivetrain | |||
| Groupset | Single speed, coaster hub | Shimano Tourney | |
| Shifting | 1x | Mechanical, 1x | |
| Crank | Not published | Prowheel A102PP Alloy Arms, 3/32" Steel Chainring with Plastic Double Chain Guard, 32T | |
| Chainrings | Not published | 32 | |
| Cassette | Not published | 7-Speed Freewheel 14-28T | |
| Cassette speeds | 1 | 7 | |
| Lowest gearRatio of smallest ring to biggest cog. Lower is easier climbing. | Not published | 1.14 | |
| Highest gearBiggest ring to smallest cog. Higher is a faster top speed. | Not published | 2.29 | |
| Gearing character | Not published | Endurance gearing | |
| Brakes and weight | |||
| Brakes | Tektro dual pivot front brake, rear coaster brake | Promax BL-367G Alloy 4-Finger Kids with Reach Adjust | |
| Geometry | |||
| Size shown | Not published | One size | |
| Stack | Not published | 429 mm | |
| Reach | Not published | 321 mm | |
| Stack to reachHigher is more upright, lower is more stretched out. | Not published | 1.34 | |
| Head angleLower (slacker) is calmer at speed, higher (steeper) is quicker steering. | Not published | 69.0 deg | |
| Seat angle | Not published | 72.0 deg | |
| Wheelbase | Not published | 892 mm | |
| Chainstay | Not published | 370 mm | |
| BB drop | Not published | 20 mm | |
Geometry overlay
- Polygon Premier 20 (size One size) is the baseline.
Stack, reach, head and seat angles, wheelbase, chainstay and BB drop are drawn to scale from published charts. Tube shapes are schematic. No full geometry published for: Reid Girls Classic 20.
BikeFinder Data Profile. Geometry and component figures are researched from published manufacturer and retailer sources, not physical ride tests, and can vary by model year.
Specs and pricing are listed in AUD and sourced from Australian retail listings. Confirm current details with the seller before purchase.