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2025 Polygon

TAMBORA A9X

A carbon frame gravel bike with high-end components and shimano grx 800 hydraulic disc brakes.
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Manufacturer Price

$3,999
Price History
FrameCarbon
SuspensionRigid
ForkCarbon
Wheels700c Carbon
Drivetrain2 × 12 Electronic
GroupsetGRX 800, GRX Di2
BrakesShimano GRX 800 Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Terrain
smoothrugged
TAMBORA A9X
Other Gravel bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

38 mph

TAMBORA A9X

36 mph

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Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full Tambora model range

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Sizing
SM

4'11" – 5'5"

MD

5'3" – 5'10"

LG

5'8" – 6'3"

XL

6'1" – 6'5"

Rider Fit Notes
  • 5'5", size SM, Fits small
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Price History
Reviews
99 Spokes
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Mar 2024

The Polygon Tambora G7 packs a ton of features (adjustable geometry anyone!) into a low its small price tag! But high value on ...

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Geometry
Specs
Build
Frame

carbon

BB Standard: T47, Threaded

Color: Black

Fork

CARBON RIGID

Bottom Bracket

TOKEN T47 FOR 24mm SPINDLE

Headset

TOKEN TK155P-36 W/ SEALED BEARING, IS 52/28.6 | IS 52/40

Handlebar

BLKTEC R8 INTEGRATED, W: 400mm (S, M) / 420mm ( L, XL), BB: 31.8mm INTEGRATED, R/D: 125mm, B/R: 72mm

Saddle

FIZIK TERRA ARGO X7

Seatpost

CARBON, DxL: 27.2x400mm

Type: Rigid

Groupset
Rear Derailleur

SHIMANO GRX Di2 RD-RX825

Crank

SHIMANO GRX FC-RX820, 48x31T

Shifters

SHIMANO GRX Di2 ST-RX825, 2x12-SPEED BRIFTER

Cassette

SHIMANO ULTEGRA CS-R8101, 11-34T

Chain

KMC NEW X-12

Brakes

SHIMANO GRX RX825 HYDRAULIC DISC

Type: Shimano GRX 800 Hydraulic Disc

Brake Levers

SHIMANO RX825

Wheels
Rims

F: CARBON FV H: 28 622x24 24H FOR TYRE 622-35/68 TLR / R: CARBON FV H: 28 622x24 24H FOR TYRE 622-35/68 TLR

Spokes

F: STAINLESS DOUBLE BUTTED 14G NDS:282mm DS:284mm W/ NIPPLE BRASS / R: STAINLESS DOUBLE BUTTED 14G NDS:284mm DS:282mm W/ NIPPLE BRASS

Front Hub

NOVATEC D791SB 12x100mm 24H CL

Rear Hub

NOVATEC D792SB 12x142mm 24H CL FOR CASSETTE SPROCKET

Tires

MAXXIS RE-FUSE 700X32C

Disc Rotors

SHIMANO CL800, 160mm

Rider Notes
Riders Also Viewed

First added May 3

Last updated June 1