UNVEIL THE TAMBORA
The Polygon Tambora G5 is a capable carbon gravel bike built for riders seeking speed, stability, and all-terrain performance. Its lightweight ACX Gravel frameset paired with a carbon rigid fork delivers efficient power transfer, precise handling, and excellent vibration damping, making it ideal for long-distance gravel rides, mixed-surface exploration, and fast adventure cycling. With balanced gravel geometry, it offers confident control on loose terrain while maintaining a responsive feel on pavement.
Equipped with a SRAM Apex 1 11-speed drivetrain, the Tambora G5 provides smooth shifting, reliable chain retention, and a wide 11–42T gear range suited for climbing and varied terrain. Hydraulic-assisted TRP HY-Road brakes deliver strong, consistent stopping power in all weather conditions, while Novatec thru-axle hubs and a durable double-wall wheelset ensure stable and efficient rolling. The tubeless-ready Vee Rail 700x40C tyres offer excellent grip and comfort across gravel and rough surfaces.
With a carbon seatpost, ergonomic flared handlebar, and Selle Italia Model X saddle, the Tambora G5 delivers comfort and control for long hours in the saddle. Whether used for adventure riding, gravel racing, or everyday mixed-terrain fitness rides, it provides a balanced blend of efficiency, durability, and all-surface capability.
FEATURES
Lightweight ACX carbon gravel frame engineered for stability, responsiveness, and long-distance comfort
Carbon rigid fork offering precise steering and excellent vibration absorption on rough gravel routes
SRAM Apex 1 11-speed drivetrain delivering smooth shifting and a wide 11–42T gear range for mixed terrain
Hydraulic-assisted TRP HY-Road brakes ensuring confident braking performance in all weather conditions
Durable alloy double-wall wheelset paired with Vee Rail 700x40C tubeless-ready tyres for enhanced grip and comfort
Novatec thru-axle hubs improving stiffness, rolling efficiency, and overall stability
Ergonomic alloy flare handlebar and carbon seatpost providing improved control and long-ride comfort
SIZE GUIDE
S Frame Size 150 to 163cm Height
M Frame Size 163 to 175cm Height
L Frame Size 175 to 188cm Height
XL Frame Size 188 to 195cm Height
SPECIFICATIONS
Frame Material: ACX Gravel
Fork: Carbon rigid
Shifter: SRAM Apex 1, 11-speed brifter
Crankset: Praxis Alba GR M30, 40T
Cassette: SRAM PG-1130, 11-speed, 11–42T
Rear Derailleur: SRAM Apex 1, 11-speed
Bottom Bracket: Praxis T47 M30
Chain: KMC X11
Saddle: Selle Italia Model X
Seatpost: Carbon, 27.2 x 300 mm (S, M, L) / 27.2 x 350 mm (XL)
Handlebar: Alloy flare 16°, width 420 mm (S, M) / 440 mm (L, XL), clamp 31.8 mm, rise/drop 125 mm, reach 77 mm
Stem: Alloy, extension 90 mm (S, M) / 100 mm (L, XL), clamp 31.8 mm, rise/drop 7°
Headset: Token TK155SP-36 with sealed bearing
Wheelset: Alloy double wall, 32H
Tyres: Vee Rail 700 x 40C (622 x 40), tubeless-ready
Rims: Alloy double wall FV, height 20 mm, 622 x 25, 32H, tubeless-ready
Hubs:
Front: Novatec D791, 12 x 100 mm, 32H, Center-Lock
Rear: Novatec D792, 12 x 142 mm, 32H, Center-Lock, cassette-type
Spokes:
Front: Stainless 14G, NDS 290 mm / DS 292 mm, brass nipples
Rear: Stainless 14G, NDS 292 mm / DS 290 mm, brass nipples
Brake Levers: SRAM Apex 1
Brake Calipers: TRP HD-C711 HY-Road
Rotors: Tektro TR, 160 mm, Center-Lock
