Polygon
Polygon Tambora A5 Gravel Bike
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Pickup currently unavailable at Unit 9, Hills Hire Centre, Johnstown Rd, Dún Laoghaire, Co. Dublin
Polygon Tambora A5 Gravel Bike
Red / L
Unit 9, Hills Hire Centre, Johnstown Rd, Dún Laoghaire, Co. Dublin
Pickup currently unavailable
Unit 9, Hills Hire Centre,Johnstown Rd,Dún Laoghaire,Co. Dublin
012840609Warehouse
Pickup available, usually ready in 5+ days
Unit 9, Hills Hire Centre,Johnstown Rd,Dún Laoghaire,Co. Dublin
+3532840609Unveil 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 A – a perfect fusion of all-road and gravel capabilities in one extraordinary ride. Designed for versatility, the Tambora A 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 bike is tailored to meet your needs.
2 Bikes in 1
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.
Tire Clearance
Accomodating up to 35c of tire for a short position flip chip and 45c for a long position flip chip.
Adjustable Geometry
Where you can switch between speed and agility from a short position flip chip or stability and control from a long position flip chip.
2x 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.
Full Carbon Gravel Bike
Introducing our first carbon gravel bike – Tambora A. Experience seamless power transfer at high speeds and become one with the ride.
Specifications
| Frame | ACX GRAVEL Carbon |
|---|---|
| Fork | GRAVEL Carbon |
| Headset | TOKEN TK155SP-36 W/ SEALED BEARING, IS 52/28.6 | IS 52/40 |
| Stem | POLYGON EXPERT, EXT: 90mm (S, M) / 100mm (L, XL), BB: 31.8mm, R/D: 7degree |
| Handlebars | POLYGON EXPERT, W: 420mm (S, M) / 440mm (L, XL), BB: 31.8mm, R/D: 125mm, B/R: 77mm |
| Wheels | NOVATEC G24 DISC (28mm) W/ TUBELESS TAPE INSTALLED |
| Rims | F: ALLOY DOUBLE WALL FV H: 20 622 32H TLR / R: ALLOY DOUBLE WALL FV H: 20 622 32H TLR |
| Spokes | F: STAINLESS 14G NDS:290 & DS:292 W/ NIPPLE BRASS / R: STAINLESS 14G NDS:292 & DS290: W/ NIPPLE BRASS |
| Hubs | F: NOVATEC D791SB 12x100mm 32H CL / R: NOVATEC D792SB 12x142mm 32H CL FOR SPROCKET |
| Tyres | MAXXIS RE-FUSE 700X32C |
| Shifter | SHIMANO GRX ST-RX600, 2x11-SPEED BRIFTER |
| Rear Derailleur | SHIMANO GRX RD-RX810 |
| Front Derailleur | SHIMANO GRX |
| Crankset | PRAXIS ALBA GR M30, 48-32T |
| Cassette | SHIMANO CS-HG700, 11-34T |
| Chain | KMC X11 |
| Bottom Bracket | PRAXIS ALBA T47 M30, 85.5mm |
| Brake Levers | SHIMANO ST-RX600 |
| Brake | SHIMANO GRX HYDRAULIC DISC |
| Rotors | SHIMANO CL700, 160mm |
| Seatpost | CARBON, DxL: 27.2x400mm |
| Saddle | FIZIK TERRA ARGO X7 |
Geometry
| S | M | L | XL | |
|---|---|---|---|---|
| Stack | 566 | 591 | 621 | 648 |
| Reach | 371 | 383 | 400 | 415 |
| Headtube Angle | 70.25 | 71.77 | 72.06 | 72.26 |
| Headtube Length | 143 | 163 | 193 | 221 |
| Seattube Angle | 74.75 | 74.26 | 73.76 | 73.26 |
| Seattube Length | 404 | 448 | 492 | 535 |
| Toptube (Effective) | 526 | 550 | 581 | 610 |
| Chainstay Length | 415 | 415 | 415 | 415 |
| Wheelbase | 997 | 1003 | 1026 | 1048 |
| BB Height | 265 | 265 | 265 | 265 |
| BB Drop | 79 | 79 | 79 | 79 |
| Standover | 701 | 741 | 784 | 819 |
| Stem Length | 90 | 90 | 100 | 100 |
| Handlebar Width | 420 | 420 | 440 | 440 |
| Rider Height | 150-163 | 163-175 | 175-188 | 188-195 |