Polygon Tambora A5 carbon gravel bike bike, Shimano GRX 2x11 speed, Red 2026

The Polygon Tambora A5 2026 is a carbon gravel bike bike designed for riders who want to explore without limits. Fast on asphalt, stable on gravel, and comfortable on long rides, it combines a modern carbon frame , a gravel bike -specific Shimano GRX 2x11-speed drivetrain , and balanced geometry to offer exceptional versatility. Its Red colorway adds a sporty and distinctive touch that won't go unnoticed.

Gravel bike carbon Frame : lightweight and versatile

The Tambora A5 is based on a carbon frame developed to meet the demands of modern gravel bike .

The advantages of the frame :

• Lightweight and stiff Gravel bike carbon Frame
• Full carbon Fork
• Stable and comfortable geometry
• Internal cable routing
• Excellent vibration absorption
• Suitable for long rides and bikepacking

This design allows you to cover long distances with maximum efficiency while maintaining excellent comfort on rough terrain.

Shimano GRX 2x11 speed Drivetrain

The Polygon Tambora A5 is equipped with the Shimano GRX group, specially designed for gravel bike riding.

Key strengths of the drivetrain :

• Shimano GRX 2x11 speed Drivetrain
• Precise and reliable gear changes
• Developments adapted to hilly and mountainous terrain
• gravel bike specific ergonomics
• Excellent road and trail handling

This configuration allows for versatile gearing suitable for both long rolling sections and the most demanding climbs.

Shimano GRX hydraulic brake rotor brakes

To guarantee optimal control on all terrains:

• Shimano GRX hydraulic brake rotor brakes
• Constant braking power
• Excellent modulation
• Precise control on dry or wet terrain

A real advantage when the courses become technical or challenging.

Robust wheels and high-performance gravel bike tires

The Tambora A5 is designed to go off the beaten track:

• Tubeless Ready Wheels
• Width suitable for modern gravel bike tires
• Excellent stability at high speed
• Optimized performance on roads and trails

Combined with high-volume tires, they provide comfort, traction and safety on all types of surfaces.

gravel bike endurance geometry

The Polygon Tambora A5 adopts a modern geometry designed for adventure:

• Comfortable position over long distances
• Wheelbase optimized for stability
• Reassuring handling on descents
• Excellent handling on technical trails

It is perfectly suited for sporting outings, bike trips and gravel bike competitions.

Ready for adventure and bikepacking

The frame has numerous fixing points allowing for easy installation:

• frame bags
• Additional bottle cages
• Travel equipment
• Long-distance accessories

An ideal companion for multi-day adventures.

Red color: sporty and elegant

The Red color scheme highlights the dynamic lines of the Tambora A5 with a modern and sporty finish. A shade that perfectly reflects the adventurous and performance spirit of this carbon gravel bike .

Why choose the Polygon Tambora A5 2026?

• Lightweight and comfortable carbon Frame
• Shimano GRX 2x11 speed Drivetrain
• GRX hydraulic brake rotor brakes
• Stable and versatile geometry
• Bikepacking compatible
• Tubeless Ready Wheels
• Excellent versatility on roads and trails
• Ideal for adventure, sporty gravel bike and long distances

Technical specifications

• Frame : Polygon Carbon Gravel bike
• Fork : Full carbon
• Drivetrain : Shimano GRX 2x11 speed
• Brakes : Shimano GRX hydraulic brake rotor
• Wheels : Gravel bike Tubeless Ready
• Cable routing : Internal
• Compatibility : Bikepacking and adventure
• Color : Red
• Vintage : 2026
• Use : Gravel bike , adventure, endurance, bikepacking

In summary

The Polygon Tambora A5 Shimano GRX 2x11-speed Red 2026 is a high-performance, versatile carbon gravel bike bike designed for riding on roads, trails, and paths alike. Thanks to its lightweight frame , dedicated Shimano GRX gravel bike drivetrain , and comfortable geometry, it's an excellent choice for cyclists looking to embark on adventures, participate in gravel bike races, or simply explore new horizons.