Details
RACE OR ESCAPE
Whether you plan to race your heart out in the burgeoning gravel race scene or just escape the daily grind, Tambora has you covered. The Tambora transforms between a race-ready gravel grinder and an aggressive roadie. Coming spec’d with Polygon’s super lightweight ACX carbon fibre frame and fork, quality contact points, SRAM components, and a tubeless-ready set-up.
FLIP-CHIP FREEDOM
The Polygon Tambora’s versatile flip-chip design allows you to tailor your ride to the terrain. Go short and sharp for race-day agility or longer and slacker for comfort on epic adventures. With ample mounts for bottles, racks, and mudguards, plus space for 45mm tyres, the Tambora is your versatile gravel companion, ready for any adventure you throw at it.
CONFIDENCE WHEN IT COUNTS
Tambora rewards decisive inputs with calm, predictable handling — it translates speed into control so you can charge unfamiliar roads without second-guessing. Its tuned balance and intuitive steering offer reassuring feedback in corners and over rough surfaces, letting you carry speed, not anxiety, from the first pedal stroke to the last.
Specs
| frameset | |
|---|---|
| Frame | ACX Gravel Frame, Internal Cable Routing, BB86 Press Fit BB, 12x142mm Thru-Axle, Flat Mount Disc, Sram UDH |
| suspension | |
| Fork | Polygon Full Carbon Rigid fork, Flat Disc Brake, 12x100mm |
| drivetrain | |
| Rear derailleur | Sram Rival XPLR ETAP AXS, 12-Speed |
| Shifter | Sram Rival ETAP AXS, 12-Speed Shifter |
| Crank | Sram Rival 1 Wide 42T, 170mm |
| Cassette | Sram XG-1251, 10-44T, 12-Speed |
| Chain | Sram Rival, 12-Speed |
| brakes | |
| Front brake | Sram Rival, Hydraulic Disc Brake, 160mm Rotor |
| Rear brake | Sram Rival, Hydraulic Disc Brake, 160mm Rotor |
| wheels | |
| Front hub | Novatec G24 Disc, 12x100mm, 24H, Novatec D791, 6 Bolt Hub |
| Rear hub | Novatec G24 Disc, 12X142mm, 24H, Novatec D792, 6 Bolt Hub |
| Rim | Novatec G24 Disc Carbon 28mm Internal Width, Tubeless Tape Installed |
| Tyre | Vee Tire Co. Rail, 700x40C, 622x40, *Tubeless Ready |
| contact points | |
| Handlebar | Polygon Alloy flare, 31.8mm Clamp Diameter, 125mm Rise, 16 Degree Flare, 420mm Width (S-M), 440mm Width (L-XL) |
| Saddle | Selle Italia Superflow |
| Seatpost | Entity Carbon, 27.2 x 300mm (S,M,L) / 27.2 x 350mm (XL) |
| Stem | Entity Expert, 31.8mm Clamp, 7-Degree, 90mm (S,M) / 100mm (L, XL) |
| weight | |
| Bike weight | 21lbs (Size M) |
Geo
| S | M | L | XL | |
| Rider Height (ft in) | 4'11" - 5'4" | 5'4" - 5'9" | 5'9" - 6'2" | 6'2" - 6'5" |
| Top Tube Length | 525 | 550 | 580 | 610 |
| Reach | 368 | 381 | 397 | 411 |
| Stack | 566 | 590 | 620 | 652 |
| Seat Tube Length | 405 | 449 | 493 | 537 |
| Chainstay Length | 425 | 425 | 425 | 425 |
| Head Tube Angle | 70 | 71.5 | 72 | 72 |
| Seat Tube Angle | 74.5 | 74 | 73.5 | 73 |
| BB Height | 277 | 277 | 277 | 277 |
| Wheelbase | 1017 | 1023 | 1045 | 1068 |
| Head Tube Length | 140 | 160 | 190 | 225 |
| Bottom Bracket offset | 78 | 78 | 78 | 78 |
| Standover | 690 | 731 | 773 | 812 |
Build
2024 Polygon Tambora G8X
Your bike needs minor assembly before riding; use the tools and videos included.
As a guide, it'll take 10-40min depending on whether you're an experienced bike assembler or have little to no mechanical experience.
Side Note: Your cables will stretch during the initial bed-in period and must be adjusted by an experienced mechanic around 150km of riding.
Unboxing Your Bike
Bike Fit Setup
Tyre Pressure Setup