Tambora G4
OverviewAbout the Polygon Tambora G4
The Polygon Tambora G4 is a gravel bike, built on a aluminium frame, listed at $1,699.99. A drop-bar all-road bike for gravel, dirt and mixed surfaces.
SizingWhat size Tambora G4 do I need?
Enter your height to see the size Polygon recommends.
| Size | Rider height | In feet |
|---|---|---|
| S | 150 to 163 cm | 4 ft 11 in to 5 ft 4 in |
| M | 163 to 175 cm | 5 ft 4 in to 5 ft 9 in |
| L | 175 to 188 cm | 5 ft 9 in to 6 ft 2 in |
| XL | 188 to 195 cm | 6 ft 2 in to 6 ft 5 in |
Rider heights from Polygon's size chart (the brand chart for this model family). Height is a starting point: arm and leg length, flexibility and riding style all matter, so a test ride beats any chart. How bike sizing works.
SpecificationsWhat we know
- Brand
- Polygon
- Model year
- 2024
- Category
- Gravel
- Frame
- Aluminium
- Wheel size
- 700c
- Drivetrain
- Microshift Advent 10-speed
- Brakes
- Disc
- Frame sizes
- S, M, L, XL
- Price
- $1,699.99, RRP AUD (Reid Cycles, checked 27 Sep 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 M
- Stack
- 593 mm
- Reach
- 381 mm
- Stack/reach
- 1.56
- Head angle
- 71.5 deg
- Seat angle
- 74 deg
- Wheelbase
- 1022 mm
- Chainstay
- 425 mm
- BB drop
- 78 mm
- Standover
- 755 mm
Drivetrain & buildFull specification
- Groupset
- Microshift Advent X
- Shifting
- Mechanical
- Drive
- 1x
- Speeds
- 10
- Crank
- Alloy, 40T
- Cassette
- Microshift Advent X CS-H104, 10-speed
- Rear derailleur
- Microshift Advent X M6205GM, 10-speed
- Brakes
- Tektro MD-C550 mechanical disc
- Rotors
- 160mm
- Wheelset
- Alloy double wall, 32H
- Rim internal width
- 19 mm
- Stock tyre
- 700x40C
- Max tyre clearance
- 45 mm
- Tubeless
- Yes
- Fork material
- Carbon rigid
- BB standard
- Threaded BSA 68mm
- Thru-axle
- Front 12x100mm, Rear 12x142mm
- Seatpost
- Alloy, 27.2 x 350mm
- Cockpit
- Alloy flare bar (420mm S/M, 440mm L/XL, 16 degree flare) with alloy stem (90mm S/M, 100mm L/XL, 7 degree)
- Saddle
- Selle Italia Model X
- Mounts
- 14 universal mounts (3 top tube, 7 down tube, 2 seat tube, rear carrier pair)
Bike DNAWhat the numbers say
- Position
- Stack-to-reach 1.56 gives an upright, comfort-oriented riding position.
- Steering
- A 71.5 deg head angle points to balanced steering.
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 (polygonbikes.com product page (tambora-g4)), verified 2026-09-04. This is a specification analysis, not a physical ride review.
Where to buyStockist
BikeFinder is an independent directory. We link to retailers; the price shown is last seen and set by the seller.
