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 | Blend of Toray T700 & High Modulus M series Carbon |
| drivetrain | |
| Rear derailleur | SRAM Apex XPLR, 12-Speed |
| Shifter | SRAM APEX, 12-Speed Shifter |
| Crank | SRAM APEX 1 Wide 40T |
| Cassette | SRAM XPLR PG-1231, 12-Speed, 11-44T |
| Chain | SRAM RIVAL, 12-Speed |
| brakes | |
| Front brake | SRAM Apex Hydraulic disc, 2‑piston, Flat‑mount |
| Rear brake | SRAM Apex Hydraulic disc, 2‑piston, Flat‑mount |
| Rotor | 160mm |
| wheels | |
| Front hub | Novatec G24 Disc, 12x100mm, 32H, Novatec D791, 6 Bolt Hub, |
| Rear hub | Novatec G24 Disc, 12X142mm, 32H, Novatec D792, 6 Bolt Hub |
| Rim | Novatec G24 Disc Carbon 28mm Internal Width, Tubeless Tape Installed |
| Tyre | Vee Tire Co. Rail Frenzy, 700x40C, Tubeless Ready* *requires a lower viscosity sealant like that of Orange Seal Race, Stans Race, Panzer or Joes; 120ml per tyre |
| 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 | 23lbs (Size M) |
Geo
| S | M | L | XL | |
| Rider Height | 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
Assembly Videos - Tambora G7
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.
Please follow the video playlist below to complete the setup of your new bike correctly.
Unboxing Your Tambora G7
Dial In Your Bike Fit
Dial In Your Tyre Pressures
Pre-Ride Check