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    TAMBORA AE GRX2025 Polygon
    Recommended
    MSRP
    $4,099
    Where to Buy
    —
    $1

    At

    Category
    		Gravel, E-Bike
    7.2
    Frame
    		Carbon
    		Carbon
    Wheels
    		Carbon
    Wheel Size
    		700c
    		Shimano GRX 800 Hydraulic Disc
    		Bosch 600W 63Nm mid-drive
    		Bosch 400Wh
    		GRX 800
    Drivetrain
    		1 × 12
    Brand Site

    polygonbikes.com

    Summary
    		The Polygon TAMBORA AE GRX is a carbon frame gravel e-bike with high-end components and shimano grx 800 hydraulic disc brakes.

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    Insights
    Ride Feel

    Based on frame geometry and build specs.

    Rider Position
    relaxedaggressive
    TAMBORA AE GRX
    Other Gravel bikes
    Gear Range

    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 AE GRX

    Highest gear

    (descending)

    Spec Level

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

    Geometry
    Specs
    TAMBORA AE GRX2025 Polygon
    Frame

    carbon

    Color: Metalic Brown

    Fork

    CARBON RIGID

    Headset

    FSA NO.55R 1.5"/CR/LS, IS 52/28.6 | IS 52/40

    Handlebar

    FSA ENERGY SUPER COMPACT, W: 400mm (S-M) 420mm (L-XL), BB: 31.8mm, R/D: 120mm

    Saddle

    FIZIK TERRA ARGO, STEEL ø7mm

    Seatpost

    CARBON, DxL: 27.2 x 400mm

    Type: Rigid

    Groupset
    Rear Derailleur

    SHIMANO GRX RD-RX822 12-SPEED

    Crank

    FSA CK-220-IS MEGATOOTH SH 44T

    Shifters

    SHIMANO GRX BR-RX820 12-SPEED BRIFTER

    Cassette

    SHIMANO CS-M8100 XT 12-SPEED 10-51T MICROSPLINE

    Chain

    SHIMANO CN-M6100 12-SPEED

    Brakes

    SHIMANO GRX HYDRAULIC

    Type: Shimano GRX 800 Hydraulic Disc

    Brake Levers

    SHIMANO GRX ST-RX820

    Wheels
    Rims

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

    Spokes

    F: STAINLESS 14G NDS:282 & DS:284 W/ NIPPLE BRASS / R: STAINLESS 14G NDS:282 & DS:280 W/ NIPPLE BRASS

    Front Hub

    NOVATEC D791 12x100mm 24H CL

    Rear Hub

    CL-142 12x142mm 24H CL FOR MICROSPLINE

    Tires

    SCHWALBE G-ONE 700C-40 622X40 ALLROUND TIRE TLE ADDIX

    Disc Rotors

    SHIMANO RT-CL800 CENTERLOCK 160MM

    Electric Components
    Motor

    BOSCH PERFORMANCE LINE SPRINT BDU3184

    Battery

    BOSCH COMPACTTUBE 400 FIXED MOUNT HORIZONTAL

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