Polygon Tambora G4 vs Marin DSX 1
A side by side comparison of two gravel bikes available in Australia, on price and specs. The Polygon Tambora G4 is the lower-priced of the two.
| 2 of 4 bikesDeltas are against the baseline | |||
|---|---|---|---|
| Price and where to buy | |||
| Current Australian price | $1,299.99Lowest | $1,499.99 | |
| RRP | $1,299.99 | $1,499.99 | |
| Price source | BikesOnline price, checked 14 Oct 2026 | BikesOnline price, checked 14 Oct 2026 | |
| Retailers | BikesOnline | BikesOnline | |
| Overview | |||
| Category | Gravel | Gravel | |
| Type | Non-electric | Non-electric | |
| Model year | 2024 | 2025 | |
| Frame and suspension | |||
| Frame | Aluminium | Aluminium | |
| Fork | Carbon rigid | full carbon, tapered steerer | |
| Wheels and tyres | |||
| Wheelset | Alloy double wall, 32H | Marin Aluminum Double Wall rims, Forged Aluminum hubs, 32H | |
| Wheel size | 700c | 700c | |
| Stock tyres | 700x40C | 700x45 | |
| Max tyre clearance | 45 mm | Not published | |
| Drivetrain | |||
| Groupset | Microshift Advent X | Shimano CUES U6000 | |
| Shifting | Mechanical, 1x | Mechanical, 1x | |
| Crank | Alloy, 40T | Forged Alloy, hollow spindle, steel narrow-wide chainring | |
| Chainrings | Not published | 42 | |
| Cassette | Microshift Advent X CS-H104, 10-speed | Shimano CUES CSLG300 | |
| Cassette speeds | 10 | 10 | |
| Lowest gearRatio of smallest ring to biggest cog. Lower is easier climbing. | Not published | 0.88 | |
| Highest gearBiggest ring to smallest cog. Higher is a faster top speed. | Not published | 3.82 | |
| Gearing character | Not published | Low climbing gear | |
| Brakes and weight | |||
| Brakes | Tektro MD-C550 mechanical disc | Tektro HD-R285 Flat Mount Hydraulic | |
| Rotors | 160mm | 160/160 | |
| Geometry | |||
| Size shown | M | Medium | |
| Stack | 593 mm | 572.5 mm-20 mm | |
| Reach | 381 mm | 405 mm+24 mm | |
| Stack to reachHigher is more upright, lower is more stretched out. | 1.56 | 1.41-0.15 | |
| Head angleLower (slacker) is calmer at speed, higher (steeper) is quicker steering. | 71.5 deg | 69.5 deg-2.0 deg | |
| Seat angle | 74.0 deg | 74.0 degsame | |
| Wheelbase | 1,022 mm | 1,060 mm+38 mm | |
| Chainstay | 425 mm | 425 mmsame | |
| BB drop | 78 mm | 80 mm+2 mm | |
Geometry overlay
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- Polygon Tambora G4 (size M) is the baseline.
- Marin DSX 1 (size Medium): 20 mm lower stack, 24 mm longer reach, 2.0 deg slacker head angle, 38 mm longer wheelbase.
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.