Every trail tells a different story. Polygon builds mountain bikes for every ride, from cross-country speed to technical descents, with hardtail and full-suspension MTBs designed to perform.
From skateparks and pump tracks to dirt jumps and street sessions, Polygon Dirt Jump & BMX bikes are built for confidence, control, and creativity.
Engineered with advanced frame technology, Polygon road bikes are designed to perform. Explore performance to all-rounder road bikes that deliver speed, efficiency, and precision on every ride.
Built for riders who refuse to be limited by the route, Polygon Adventure Bikes deliver comfort and versatility. Explore gravel bikes and hybrid bikes ready for urban rides and scenic escapes.
From daily commutes to weekend rides, Polygon city bikes deliver comfort, versatility, and reliable performance for every urban journey.
Go farther with Polygon electric bikes. From daily commuting to weekend adventures, our e-bikes deliver smooth power, confident handling, and more freedom on every ride.
Every ride starts with confidence. Polygon kids junior bikes are built for young riders, combining comfort, durability, and confidence to inspire every adventure from the very first ride.
TAMBORA AE
Unveil The Ultimate Gravel Experience
Features
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Engineered for Versatile Adventures
The Tambora AE electric gravel bike combines a carbon frame with a stiff chainstay design for enhanced power transfer, complemented by dropped seatstays to elevate comfort and compliance. Whether you're venturing off the beaten path or enhancing your daily commute, it's your ticket to boundless exploration.
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Ample tire clearance for every terrain you need
The Tambora AE is designed to accommodate tires with up to 45c clearance, ensuring versatility and capability across various terrains. Whether it's mixed surfaces during a race or an off-road adventure, this gravel bike is ready to conquer it all.
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Strength Meets Aerodynamics
Rest easy and tackle the steep climb and rough terrain ahead. The Tambora AE is equipped with a mullet groupset, delivering a perfect balance of power and aerodynamics. An ideal choice for riders seeking adventure, performance, and versatility in a sleek, capable e-bike, the Polygon Tambora gravel bike is ready to take you places you never thought possible.
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Silent strength, consistent power
Powered by the BOSCH Performance Line Sprint, offering a quiet yet powerful assist of up to 45 km/h with 55 Nm of torque, providing smooth and reliable power at any speed. The wireless switch ensures a clean and easy-to-maintain setup.
Choose your series
Build Specs
| Kit |
TAMBORA AE GX
|
TAMBORA AE GRX
|
|---|---|---|
| Frame | ACX CARBON e-GRAVEL | ACX CARBON e-GRAVEL |
| Fork | CARBON RIGID | CARBON RIGID |
| Shifter | SRAM RIVAL ETAP AXS 12-SPEED BRIFTER | SHIMANO GRX BR-RX820 12-SPEED BRIFTER |
| Crank Set | FSA CK-220-IS MEGATOOTH A 44T | FSA CK-220-IS MEGATOOTH SH 44T |
| Cassette | SRAM XG 1275 GX EAGLE 12-SPEED 10-52T XD DRIVER | SHIMANO CS-M8100 XT 12-SPEED 10-51T MICROSPLINE |
| Rear Derailleur | SRAM GX EAGLE AXS 12-SPEED | SHIMANO GRX RD-RX822 12-SPEED |
| Wheel Set | NOVATEC G24 DISC (28mm) W/ TUBELESS TAPE INSTALLED | NOVATEC G24 DISC (28mm) W/ TUBELESS TAPE INSTALLED |
| Tire | SCHWALBE G-ONE 700C-40 622X40 ALLROUND TIRE TLE ADDIX | SCHWALBE G-ONE 700C-40 622X40 ALLROUND TIRE TLE ADDIX |
| Brake Lever | SRAM RIVAL AXS | SHIMANO GRX ST-RX820 |
| Brake Caliper | SRAM RIVAL HYDRAULIC | SHIMANO GRX HYDRAULIC |
| Rotor | SRAM PACELINE CENTERLOCK 160MM | SHIMANO RT-CL800 CENTERLOCK 160MM |
| Motor | BOSCH PERFORMANCE LINE SPRINT BDU3184 | BOSCH PERFORMANCE LINE SPRINT BDU3184 |
| Sensor | BOSCH RIM MAGNET | BOSCH RIM MAGNET |
| Battery | BOSCH COMPACTTUBE 400 FIXED MOUNT HORIZONTAL | BOSCH COMPACTTUBE 400 FIXED MOUNT HORIZONTAL |
FAQ
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What is an gravel e-bike?
Gravel e-bike, especially Tambora AE Series, offers a stability through long road, combined with speed and agile experience for your gravel ride companion with multi-terrain tracks: all-day race, touring ride, long adventure that can handle most roads, sands, and light gravel with a hint of pebble terrain.
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Can tires be replaced with other tires? If so, what is the maximum size?
Sure! The tire can be upgraded up to 45c.
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What is the biggest chainring I can fit?
The maximum chainring of Tambora AE is 44T .
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What are the biggest rotors I can fit?
The biggest rotors for the Tambora AE series are 160 mm.
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Can you fit mudguards, pannier racks front and back?
Tambora AE is not compatible for mudguard, pannier, and bike rack. But don’t worry, we still have plenty of room to attach your frame bag.
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Can I fit a dropper post?
Yes, with some notes in mind:Tambora AE with SRAM build kit can be installed with a wireless dropper post and re-pair the brifter, while Tambora AE with Shimano build kit can be installed with a wire/brifter compatible with the dropper post.
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How much charging power and how long does it take to charge a Tambora AE?
The Tambora AE comes with fast charging features with 3-4 hours of charging time and battery capacity is 400 wh. This also depends on the condition of the battery and charger.
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What is the maximum distance of Tambora AE e-bike assist?
The range of the Tambora AE with assist covers up to 78 km and 119 km with powermore when the battery is full.Actual mileage may vary due to a number of other factors, such as terrain conditions, load on the gravel bike, and state of the battery.
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What is the maximum speed of the Tambora AE?
Power assist will provide up to a speed of 45 km/h. But don't worry, you can still ride the Tambora AE beyond 45 km/h but without the assistance of a boost assist.The speed of e-bikes may vary depending on the regulations of each country.
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Can I upgrade it to 2-by?
No, Tambora AE cannot be ugraded to 2-by.
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Can I add additional battery for Tambora AE? How big is the battery capacity?
Yes! Tambora AE comes with BOSCH Performance Line Sprint comes with powermore battery up to 250 wh for extra range.
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Do you have a Walk Assist mode?
Yes, our BOSCH e-bike system includes the 'Hill Hold' feature, which is part of the smart walk assistance. When you need to walk your bike uphill and stop, it won't roll backward; instead, it helps you by automatically stopping.
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How can I maximize its pedal assist and the battery lifetime as well?
BOSCH Performance Line Sprint drive system provides 4 power modes; Eco, Tour+, Sprint, Turbo. And the BOSCH e-bike Flow app lets you customize the assistance of each mode to your personal preferences (available only in Europe, North-America, Australia, and New Zealand).
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What is the maximum load that Tambora AE can accommodate?
The maximum load that Tambora AE can accommodate is 120 kg.
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Is there a warranty for Tambora AE?
The gravel bicycle frame warranty is valid for 5 (five) years from the date of purchase. For batteries and motors, it is valid for 2 (two) years from the date of purchase. Check the Polygon Bikes website for more information.
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What if the electronic system gets wet?
Just clean it with a clean cloth until dry.