2024 Polygon

Tambora G4

An aluminum frame gravel bike with upper mid-range components and mechanical disc brakes.
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MSRP$999  
Weight25.1 lbs  
FrameAluminum
SuspensionRigid
ForkCarbon
Wheels700c Aluminum
Drivetrain1 × 10
GroupsetmicroSHIFT Advent X
BrakesMechanical Disc
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Top Comparison
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)

33 mph

Tambora G4

36 mph

Similar Bikes

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

View Comparison
Sizing
SM

5'2" – 5'8"

MD

5'6" – 5'11"

LG

5'10" – 6'3"

XL

6'1" – 6'7"

🐐 Estimated

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

ALX Gravel Frame, Internal Cable Routing, BB86 Press Fit BB, 12x142mm Thru-Axle, Flat Mount Disc, SRAM UDH

BB StandardBB86/BB92, Press Fit

Hanger StandardUDH

Fork

Polygon Full Carbon Rigid fork, Flat Disc Brake, 12x100mm

Bottom Bracket

BB86/BB92, press-fit

Headset

ZS 56/28.6 | ZS 56/40

Stem

Entity Expert, 31.8mm Clamp, 7-Degree, 90mm (S,M) / 100mm (L, XL)

Handlebar

Polygon Alloy flare, 31.8mm Clamp Diameter, 125mm Rise, 16 Degree Flare, 420mm Width (S-M), 440mm Width (L-XL)

Saddle

Selle Italia Superflow

Seatpost

Entity 27.2 x 350mm

TypeRigid

Groupset
Rear Derailleur

MicroShift M6205GM, 10-Speed

Crank

ProWheel Charm, 42T, 170mm

Shifters

MicroShift Advent X SB-M100, 1x10-Speed Shifter

Cassette

MicroShift CS-H104, 11-48T, 10-Speed

Chain

KMC X10

Brakes

Front: Tektro MD-C550 Mechanical Disc Brake, 160mm Rotor, Rear: Tektro MD-C550 Mechanical Disc Brake, 160mm Rotor

TypeMechanical Disc

Wheels
Rims

Front: Polygon Alloy Double Wall, 23mm Inner Width, 12x100mm, 32H, 6Bolt Hub, Stainless spokes, Brass Nipple, Tubeless Tape Installed, Rear: Polygon Alloy Double Wall, 23mm Inner Width, 12x142mm, 32H, 6Bolt Hub, Stainless spokes, Brass Nipple, Tubeless Tape Installed

Tires

Front: Vee Tire Co. Rail, 700x40C, Rear: Vee Tire Co. Rail, 700x40C

Rider Notes
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Last updated April 8