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 G – a perfect fusion of gravel and all-road capabilities in one extraordinary ride. This bike empowers 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. Features Powerful Speed and Unwavering Stability - No need to compromise between speed, stability, and confidence. The wheelbase length ensures stability, while the precise head tube angle instills confidence in your steering and control. Conquer Diverse Terrains with Ample Tire Clearance - Accommodating up to 45c tire. Go through any mixed terrain on any race or adventure, Polygon Tambora G will take you on any terrain with powerful speed. Free to Choose in a Flip of a Switch - Unlock the power of choice in your cycling experience, where you can switch between speed and agility or stability and control effortlessly. Introducing our groundbreaking technology: Flip Chip! Enjoy our first carbon gravel bike! - Introducing our first carbon gravel bike – Tambora G. Experience seamless power transfer at high speeds and become one with the ride. Wireless shifting - Experience the ultimate cycling pleasure with Polygon Tambora G8X’s new SRAM Rival 1 eTap AXS, ensuring a superior shifting experience. Specifications Frameset ACX GRAVEL Fork CARBON RIGID Frame Color MAROON BROWN Decal Color CHARCOAL Drivetrain Shifter SRAM RIVAL ETAP AXS 12-SPEED BRIFTER Rear Derailleur SRAM RIVAL XPLR ETAP AXS 12-SPEED Crank SRAM RIVAL 1 WIDE 40T Cassette SRAM XG-1251 12 SPEED 10-44T XDR Chain SRAM RIVAL 12-SPEED BB SRAM DUB T47 Cockpit Saddle SELLE ITALIA MODEL X Handlestem ALLOY STEM, EXT: 90mm (S, M) / 100mm (L, XL), BB: 31,8mm, R/D: 7degree Seatpost CARBON, DXL: 27,.2 x 300mm (S,M,L) / 27.2 x 350mm (XL) Heaadset TOKEN TK155SP-36 W/ SEALED BEARING Handlebar ALLOY FLARE 16degree, W: 420mm (S, M) / 440mm (L, XL), BB: 31,8mm, R/D: 125mm, B/R: 77mm Wheel & Tire Wheel Set NOVATEC G24 DISC (28mm) W/ TUBELESS TAPE INSTALLED Tire 700x40C 622x40 TLR Rim CARBON FV H: 28 622x24 24H FOR TYRE 622-35/68 TLR Hub F: NOVATEC D791 12x100mm 24H CL / R: NOVATEC D792 12x142mm 24H CL FOR XDR Spokes F: STAINLESS DOUBLE BUTTED 14G NDS:282mm DS:284mm W/ NIPPLE BRASS / STAINLESS DOUBLE BUTTED 14G NDS:284mm DS:282mm W/ NIPPLE BRASS Brake Brake Lever SRAM RIVAL Brake Caliper SRAM RIVAL HYDRAULIC DISC Rotor SRAM PACELINE 160mm CL Geometry & Size S M L XL Height (cm) 150-163 163-175 175-188 188-195 Seat Tube Length (A) 404 448 492 535 Seat Tube Angle (B) 74.5 74 73.5 73 Effective Seat Tube Angle (C) 74.5 74 73.5 73 Head Tube Length (D) 143 163 193 221 Head Tube Angle (E) 70 71.5 71.8 72 Effective Top Tube (F) 526 551 581 611 Bb Height (G) 280 280 280 280 Bb Offset (H) 78 78 78 78 Chainstay Length (I) 425 425 425 425 Wheelbase (J) 1017 1022 1045 1067 Frame Reach (K) 369 381 397 412 Frame Stack (L) 568 593 622 650 Standover Height (M) 716 755 798 833