Kona Rove AL vs Polygon Tambora G4
A side by side comparison of two gravel bikes available in Australia, on price and specs. The Kona Rove AL is the lower-priced of the two.
| 2 of 4 bikesDeltas are against the baseline | |||
|---|---|---|---|
| Price and where to buy | |||
| Current Australian price | $1,299Lowest | $1,299.99 | |
| RRP | $1,599 | $1,299.99 | |
| Price source | At Bikezone Fitzroy, was $1,599. Stock not confirmed, checked 14 Oct 2026. | At BikesOnline, was $1,699.99. Stock not confirmed, checked 14 Oct 2026. | |
| Retailers | bikezonefitzroy.com.au | BikesOnline | |
| Overview | |||
| Category | Gravel | Gravel | |
| Type | Non-electric | Non-electric | |
| Model year | 2026 | 2024 | |
| Frame and suspension | |||
| Frame | Aluminium | Aluminium | |
| Fork | Kona 6061 Aluminium Disc | Carbon rigid | |
| Wheels and tyres | |||
| Wheelset | WTB SX19 rims, Joytech hubs | Alloy double wall, 32H | |
| Wheel size | 700c | 700c | |
| Stock tyres | 700x40c | 700x40C | |
| Max tyre clearance | 45 mm | 45 mmsame | |
| Drivetrain | |||
| Groupset | Shimano ESSA | Microshift Advent X | |
| Shifting | Mechanical, 1x | Mechanical, 1x | |
| Crank | Shimano ESSA 2000, 40t | Alloy, 40T | |
| Chainrings | 40 | Not published | |
| Cassette | Shimano ESSA HG300 11-45t 8spd | Microshift Advent X CS-H104, 10-speed | |
| Cassette speeds | 8 | 10 | |
| Lowest gearRatio of smallest ring to biggest cog. Lower is easier climbing. | 0.89 | Not published | |
| Highest gearBiggest ring to smallest cog. Higher is a faster top speed. | 3.64 | Not published | |
| Gearing character | Low climbing gear | Not published | |
| Brakes and weight | |||
| Brakes | Tektro Mira CX | Tektro MD-C550 mechanical disc | |
| Rotors | 160/160mm | 160mm | |
| Geometry | |||
| Size shown | 56 | M | |
| Stack | 601 mm | 593 mm-8 mm | |
| Reach | 400 mm | 381 mm-19 mm | |
| Stack to reachHigher is more upright, lower is more stretched out. | 1.50 | 1.56+0.06 | |
| Head angleLower (slacker) is calmer at speed, higher (steeper) is quicker steering. | 70.0 deg | 71.5 deg+1.5 deg | |
| Seat angle | 73.0 deg | 74.0 deg+1.0 deg | |
| Wheelbase | 1,076 mm | 1,022 mm-54 mm | |
| Chainstay | 435 mm | 425 mm-10 mm | |
| BB drop | 70 mm | 78 mm+8 mm | |
Geometry overlay
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- Kona Rove AL (size 56) is the baseline.
- Polygon Tambora G4 (size M): 8 mm lower stack, 19 mm shorter reach, 1.5 deg steeper head angle, 54 mm shorter wheelbase, 10 mm shorter chainstays.
Stack, reach, head and seat angles, wheelbase, chainstay and BB drop are drawn to scale from published charts. Tube shapes are schematic. Sizes differ between these bikes, so check the size you would actually ride.
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.