Unveil the Tambora

Swift Adventures Unlocked in One Bike
Drawing inspiration from the birth of bicycles, sparked by the largest volcanic eruption in recorded history, Mount Tambora, we've looked back and reminded ourselves and the world of this history by creating the Polygon Tambora A4 gravel bike, a perfect fusion of all-road and gravel capabilities in one extraordinary ride. Designed for versatility, the Tambora A4 gravel bike features a short wheelbase, making it an agile companion for all-road exploration. Equipped with a 2-by drivetrain, it offers enhanced versatility and a wide range of gears, empowering us to conquer any terrain with newfound speed.​ ​Whether you're a competitive racer, long-distance enthusiast, or an adventurous explorer, this gravel bike is tailored to meet your needs.
Polygon Tambora A4 Gravel Bike Charcoal

TAMBORA A4

$2,399.99
FIND DEALER
  • SKU : 503328

Features

  • Powerful Speed and Unwavering Stability​

    Experience the ultimate ride that combines power and speed with unwavering stability. The wheelbase length ensures stability, while the precise head tube angle instills confidence in your steering and control. No need to compromise between speed, stability, and confidence—now, the choice is in your hands.​

  • Conquer Diverse Terrains with Ample Tire Clearance​

    Accomodating up to 35c of tire for a short position flip chip and 45c for a long position flip chip.

  • Free to Choose in a Flip of a Switch​

    Where you can switch between speed and agility from a short position flip chip or stability and control from a long position flip chip.

  • Experience Effortless Performance with 2-by Drivetrain​

    Tailored for those who crave performance on extended, fast-paced all-road adventures, the 2-by drivetrain offers a broad range of gears, ensuring effortless cruising on flats with precision control. It delivers the perfect balance of power, agility, and efficiency for long-distance rides.​

Specification

  • Frameset
    Frameset

    ALX XC TRAIL FRAME

    Fork

    CARBON RIGID

    Size

    S, M, L, XL

    Frame Color

    CHARCOAL - BLUE

    Decal Color

    SILVER

  • Drivetrain
    Shifter

    SHIMANO GRX ST-RX600, 2x11-SPEED BRIFTER

    Crank

    PROWHEEL RPZ C701X TT, 48-31T

    Cassette

    SHIMANO CS-HG700, 11-34T

    Rear Derailleur

    SHIMANO GRX RD-RX810

    BB

    BSA, 68mm

    Chain

    KMC X11

  • Cockpit
    Saddle

    LINC FLUX 2

    Seatpost

    POLYGON EXPERT, DxL: 27.2x400mm

    Handlebar

    POLYGON EXPERT, W: 420mm (S, M) / 440mm (L, XL), BB: 31.8mm, R/D: 125mm, B/R: 77mm

    Handlestem

    POLYGON EXPERT, EXT: 90mm (S, M) / 100mm (L, XL) , BB: 31.8mm, R/D: 7degree

    Headset

    TOKEN TK156SP-36 W/ SEALED BEARING, ZS 56/28.6 | ZS 56/40

  • Wheel & Tire
    Wheel Set

    ALLOY DOUBLE WALL 32H

    Wheel Size

    700C

    Tire

    MAXXIS PURSUER 700X32C

    Rim

    F: ALLOY DOUBLE WALL FV H: 20 622 32H TLR / R: ALLOY DOUBLE WALL FV H: 20 622 32H TLR

    Hub

    F: NOVATEC D791SB 12x100mm 32H CL / R: NOVATEC D792SB 12x142mm 32H CL FOR SPROCKET

    Spokes

    F: STAINLESS 14G NDS:290 & DS:292 W/ NIPPLE BRASS / R: STAINLESS 14G NDS:292 & DS290: W/ NIPPLE BRASS

  • Brake
    Brake Lever

    SHIMANO ST-RX600

    Brake Caliper

    SHIMANO GRX HYDRAULIC DISC

    Rotor

    SHIMANO RT-CL700, 160mm

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