2023 Polygon

TAMBORA G4

An aluminum frame gravel bike with upper mid-range components and mechanical disc brakes.
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Manufacturer Price

$899
Price History
FrameAluminum
SuspensionRigid
ForkCarbon
Wheels700c Aluminum
Drivetrain1 × 10
GroupsetmicroSHIFT Advent X
BrakesMechanical Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Terrain
smoothrugged
TAMBORA G4
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)

31 mph

TAMBORA G4

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

None yet.

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Price History
Reviews
99 Spokes
Polygon Tambora Review || Two Bikes in One!

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 ...

Watch Review

Geometry
99 Spokes on YouTube99 Spokes on YouTube
Specs
Build
Frame

aluminum

BB Standard: BSA, 68mm, Threaded

Color: Broken White

Fork

CARBON RIGID

Bottom Bracket

THREADED BSA 68mm

Headset

TOKEN TK156SP-CHHC W/ SEALED BEARING

Handlebar

ALLOY FLARE 16degree, W: 420mm (S, M) / 440mm (L, XL), BB: 31,8mm, R/D: 125mm, B/R: 77mm

Saddle

SELLE ITALIA MODEL X

Seatpost

ALLOY SEATPOST, DXL: 27,2 x 350mm

Type: Rigid

Groupset
Rear Derailleur

MICROSHIFT ADVENT X M6205GM 10-SPEED

Crank

ALLOY 40T

Shifters

MICROSHIFT ADVENT X SB-M100, 1x10-SPEED BRIFTER

Cassette

MICROSHIFT ADVENT X CS-H104 10 SPEED 11-48T

Chain

KMC X10

Brakes

TEKTRO MD-C550 MECHANICAL

Type: Mechanical Disc

Brake Levers

MICROSHIFT ADVENT X SB-M100

Wheels
Rims

ALLOY DOUBLE WALL FV H: 19 622X23 32H TLR

Spokes

F: STAINLESS 14G NDS:290 & DS:294 W/ NIPPLE BRASS / R: STAINLESS 14G NDS:292 & DS:290 W/ NIPPLE BRASS

Front Hub

F: ALLOY DISC BRAKE 12x100mm 32H 6B / R: ALLOY DISC BRAKE 12x142mm 32H 6B FOR SPROCKET

Rear Hub

F: ALLOY DISC BRAKE 12x100mm 32H 6B / R: ALLOY DISC BRAKE 12x142mm 32H 6B FOR SPROCKET

Tires

VEE RAIL 700x40C 622x40 TLR

Disc Rotors

TEKTRO 160mm 6B

Rider Notes
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Last updated July 1