Polygon TAMBORA A4 – a city and trekking bike designed for daily commuting, longer rides, and mixed-surface cycling on pavement and gravel roads.
Key Features
Frame and Fork
The bike features a lightweight ALX alloy frame with internal cable routing. The suspension fork helps reduce road vibrations and improves comfort on city streets, bike paths, and gravel surfaces.
Drivetrain
The bike uses a Shimano 2x9 drivetrain that provides a wider gear range for both flat roads and climbing. This setup allows riders to adapt more easily to different terrain and riding conditions.
Brake System
Hydraulic disc brakes provide controlled and consistent braking performance in various weather conditions. This setup is especially useful for daily commuting and longer rides.
Wheels and Tires
The 28-inch wheels improve rolling efficiency on longer distances. The versatile tires are suitable for pavement, bike paths, and light gravel use.
Cockpit and Components
A more upright riding position and trekking-oriented geometry improve comfort on extended rides. The wider handlebar also provides stable handling in urban environments and mixed routes.
Additional Features
The frame includes mounting points for fenders and racks, making the bike suitable for commuting and touring use. These integrated mounts add practicality for everyday riding.
Summary
The Polygon TAMBORA A4 is designed for riders looking for a versatile city and trekking bike for commuting and longer recreational rides. Its alloy frame, Shimano 2x9 drivetrain, and hydraulic disc brakes make it suitable for both urban riding and mixed terrain routes.
What type of bike is this?
It is a city and trekking bike with 28-inch wheels.
What are the main advantages?
Alloy frame, Shimano 2x9 drivetrain, and hydraulic disc brakes.
Who is it best suited for?
Daily commuters and riders covering longer mixed-surface routes.
What are the main components?
Shimano 2x9 drivetrain, suspension fork, and hydraulic disc brakes.
What category does it belong to?
City / Trekking category.
Who is the manufacturer?
Polygon Bikes
What wheel size does it use?
28-inch wheels.
| BICYCLE FRAME | |
|---|---|
| Dviračio rėmas | Aluminum ALX XC TRAIL |
| Dviračio šakė | CARBON RIGID |
| DRIVETRAIN | |
|---|---|
| Priekinių žvaigždžių skaičius | 2 |
| Pavarų perjungimo rankenėlės | SHIMANO GRX ST-RX600, 2x11-SPEED BRIFTER |
| Priekinis žvaigždžių blokas | PROWHEEL RPZ C701X TT, 48-31T |
| Galinis pavarų perjungėjas | SHIMANO GRX RD-RX810 11-SPEED |
| Galinis žvaigždžių blokas | SHIMANO CS-HG700, 11-34T |
| Grandinė | KMC X11 |
| BRAKES | |
|---|---|
| Stabdžių sistema | SHIMANO GRX |
| Stabdžių tipas | Hydraulic disc |
| WHEELS/TYRES | |
|---|---|
| Ratų dydis | 28 |
| Padangos | MAXXIS PURSUER 700X32C |
| Stebulės | F: NOVATEC D791SB 12x100mm 32H CL / R: NOVATEC D792SB 12x142mm 32H CL FOR SPROCKET |
| HANDLEBARS | |
|---|---|
| Vairas | POLYGON EXPERT, W: 420mm (S, M) / 440mm (L, XL), BB: 31.8mm, R/D: 125mm, B/R: 77mm |
| GENERAL INFORMATION | |
|---|---|
| Apytikslis svoris, kg | 11 |
| Maksimali apkrova, kg | 120 |