Details
LIGHTWEIGHT
Aluminum has long been the ideal material for bikes and aeroplanes with its incomparable strength-to-weight ratios. The frame features an integrated front end, internal cable routing, multiple mounting points for things like bottle cages, racks, mudguards and space for 45mm tyres.
GEOMETRY
Tambora features modern geometry with aggressive head and seat tube angles, long 425mm chainstays for comfort, and a 277mm bottom bracket height with the perfect amount of clearance. It also features a longer wheelbase designed for high-speed stability
INDUSTRY REVIEWS
Top Pick “The Tambora is a thoroughly modern bike-packing gravel bike with features usually found on more expensive bikes.” Cycling About
Specs
| frameset | |
|---|---|
| Frame | ALX Gravel Alloy Frame, Threaded BSA 68mm Bottom Bracket, Flat Mount Disc Brake, 12x142mm Rear Thru-Axle, Internal Cable Routing |
| Headset | Token TK156SP-CHHC Sealed Bearing |
| suspension | |
| Fork | Carbon Rigid Fork, Flat Mount Disc Brake, 12x100mm Thru-Axle |
| drivetrain | |
| Rear derailleur | Microshift Advent X M6205GM, 10-Speed |
| Shifter | Microshift Advent X SB-M100, 1x10-Speed Brifter |
| Crank | Alloy, 170mm |
| Chainring | 40T |
| Cassette | Microshift Advent X CS-H104, 11–48T, 10-Speed |
| Chain | KMC X10 |
| brakes | |
| Front brake | Tektro MD-C550 Mechanical Disc Brake |
| Rear brake | Tektro MD-C550 Mechanical Disc Brake |
| Rotor | Tektro 160mm, 6-Bolt |
| wheels | |
| Front hub | Alloy Disc Brake, 12x100mm Thru-Axle, 32H, 6-Bolt |
| Rear hub | Alloy Disc Brake, 12x142mm Thru-Axle, 32H, 6-Bolt |
| Rim | Alloy Double Wall, 700c, 23mm Inner Width, 32H, Tubeless Compatible ** |
| Tyre | Vee Tire Co. Rail Frenzy, 700x40, Tubeless Compatible ** |
| Max tyre size | 700x45 |
| 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 27.2 x 350mm |
| Stem | Entity Expert, 31.8mm Clamp, 7-Degree, 90mm (S,M) / 100mm (L, XL) |
| weight | |
| Bike weight | 25lbs (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
2024 Polygon Tambora G4
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 Tambora G4
Dial In Your Bike Fit
Dial In Your Tyre Pressures
Pre-Ride Check