Polygon Tambora Ae-n C3

Our new evolution in gravel bike! Inspired by the Tambora gravel to all-road series, the new Polygon Tambora gravel e-bike will unlock more power at any terrain, any speed with the BOSCH e-bike system. Spend less time breaking any wind, any obstacle, or any climbs at double speed – effortlessly. Featuring an ACX carbon gravel frame and fork for optimal performance.​​A perfect companion for a tough-competitive ride, or leisure fun gravel ride.​

ULTIMATE CARBON EXPLORER

From remote gravel trails to the fast lane of your daily commute, the Tambora E transforms every ride into an open invitation to explore without limits. Its lightweight carbon frame and stiff chain stays maximize power transfer, while dropped seat stays enhance comfort and compliance across rough terrain.

PERFORMANCE LINE SPRINT

This compact drive unit disappears into the frame – weighing just 4.4 lbs, it’s Bosch’s lightest drive yet, but it packs up to 600W & 55NM of smooth, responsive support. Start pedaling and feel the support: sensitive, quiet, and direct. A natural riding sensation combined with the benefits of the eBike.

650WH TOTAL RANGE

The Tambora E comes with two batteries: a slim, integrated 400WH main battery weighing just 2kg, and a 250WH range extender the size of a water bottle. Designed to help you breeze past obstacles, conquer climbs, and battle the wind, the Polygon Tambora E lets you go farther and faster.

CONTEMPORARY COMPONENTS

The Tambora E features a wide-range 12-speed drivetrain and powerful hydraulic brakes, giving you confidence on technical climbs and fast descents. Paired with wide carbon wheels and grippy tyres, it delivers better traction, a smoother ride, and the control you need to tackle any adventure easily.

NOVATEC G24 PRO CARBON WHEELSET

Built for gravel, this wheelset balances stiffness and compliance. Its 24mm internal tubeless-ready rims support wide tyres, while the rear hub’s Dual Ratchet System enhances durability, strength, and responsiveness compared to traditional pawl systems.

SCHWALBE G-ONE ALLROUND 700x40C

Smooth and versatile, the Schwalbe G-One Allround 700x40C rolls fast with minimal vibration while maintaining grip on gravel and dry trails. Tubeless-ready and lightweight, it’s built for efficiency across mixed terrain.

FLIP-CHIP CARBON FORK

The full carbon fork ensures stability and comfort on any terrain, while the flip chip lets you adjust the geometry to match your riding style. Fine-tune the head angle and bottom bracket height for optimal performance on trails or city streets.

SHIMANO GRX 820 SERIES

Bosch’s Performance Line SX motor is paired with the Compact Tube 400 battery, offering assist up to 45 km/h with 55 Nm of torque and a range of up to 119 km.