Bicycle Archive · Specification report

2025 Polygon Tambora A9X

Velopedia Archive ID 900001856

Overview

Model year	2025
Brand	Polygon
Model	TAMBORA A9X
Bicycle type	Cyclocross/Gravel
Archive ID	900001856
Original MSRP	$3,999.00
Colors	Black
Sizes	S; M; L; XL

Frameset

Frame construction	ACX Gravel
Frame material	Carbon Fiber
Fork	Carbon Rigid
Fork material	Carbon Fiber

Drivetrain

Shifters	Shimano GRX Di2 ST-RX825, 2X12-Speed Brifter
Rear derailleur	Shimano GRX Di2 RD-RX825
Crankset	Shimano GRX FC-RX820, 48x31T
Bottom bracket	Token T47 for 24mm Spindle
Cassette	Shimano Ultegra CS-R8101, 11-34T
Chain	KMC New X-12

Brakes

Brakes	SHIMANO GRX RX825 HYDRAULIC DISC; Levers: SHIMANO RX825; Rotors: SHIMANO CL800, 160mm

Cockpit & contact points

Headset	Token TK155P-36 W/ Sealed Bearing, IS 52/28.6 \| IS 52/40
Handlebar	Blktec R8 Integrated, W: 400mm (S, M) / 420mm ( L, XL), BB: 31.8mm Integrated, R/D: 125mm, B/R: 72mm
Stem	Blktec R8 Integrated, EXT: 100mm (S, M) / 110mm (L-XL), BB: Integrated, R/D: 0 Degree
Saddle	Fizik Terra Argo X7
Seatpost	Carbon, DXL: 27.2X400mm

Wheels & tires

Hubs	F: Novatec D791SB 12x100mm 24H CL / R: Novatec D792SB 12x142mm 24H CL for Cassette Sprocket
Wheels	Novatec G24 Disc (28mm) W/ Tubeless Tape Installed
Rims	F: Carbon FV H: 28 622x24 24H for Tyre 622-35/68 TLR / R: Carbon FV H: 28 622x24 24H for Tyre 622-35/68 TLR
Front tire	Maxxis RE-Fuse 700x32C
Rear tire	Maxxis RE-Fuse 700x32C

Geometry · S · All Road

Seat tube	404 mm
Effective top tube	526 mm
Head tube	143 mm
Head-tube angle	70.25°
Seat-tube angle	74.75°
Actual seat-tube angle	74.75°
Chainstay / rear center	415 mm
Wheelbase	997 mm
Bottom-bracket drop	79 mm
Bottom-bracket height	265 mm
Reach	371 mm
Stack	566 mm
Standover height	701 mm

Geometry · M · All Road

Seat tube	448 mm
Effective top tube	550 mm
Head tube	163 mm
Head-tube angle	71.77°
Seat-tube angle	74.26°
Actual seat-tube angle	74.26°
Chainstay / rear center	415 mm
Wheelbase	1003 mm
Bottom-bracket drop	79 mm
Bottom-bracket height	265 mm
Reach	383 mm
Stack	591 mm
Standover height	741 mm

Geometry · L · All Road

Seat tube	492 mm
Effective top tube	581 mm
Head tube	193 mm
Head-tube angle	72.06°
Seat-tube angle	73.76°
Actual seat-tube angle	73.76°
Chainstay / rear center	415 mm
Wheelbase	1026 mm
Bottom-bracket drop	79 mm
Bottom-bracket height	265 mm
Reach	400 mm
Stack	621 mm
Standover height	784 mm

Geometry · XL · All Road

Seat tube	535 mm
Effective top tube	610 mm
Head tube	221 mm
Head-tube angle	72.26°
Seat-tube angle	73.26°
Actual seat-tube angle	73.26°
Chainstay / rear center	415 mm
Wheelbase	1048 mm
Bottom-bracket drop	79 mm
Bottom-bracket height	265 mm
Reach	415 mm
Stack	648 mm
Standover height	819 mm

Geometry · S · Gravel

Seat tube	404 mm
Effective top tube	526 mm
Head tube	143 mm
Head-tube angle	70°
Seat-tube angle	74.5°
Actual seat-tube angle	74.5°
Chainstay / rear center	425 mm
Wheelbase	1017 mm
Bottom-bracket drop	78 mm
Bottom-bracket height	280 mm
Reach	369 mm
Stack	568 mm
Standover height	716 mm

Geometry · M · Gravel

Seat tube	448 mm
Effective top tube	551 mm
Head tube	163 mm
Head-tube angle	71.5°
Seat-tube angle	74°
Actual seat-tube angle	74°
Chainstay / rear center	425 mm
Wheelbase	1022 mm
Bottom-bracket drop	78 mm
Bottom-bracket height	280 mm
Reach	381 mm
Stack	593 mm
Standover height	755 mm

Geometry · L · Gravel

Seat tube	492 mm
Effective top tube	581 mm
Head tube	193 mm
Head-tube angle	71.8°
Seat-tube angle	73.5°
Actual seat-tube angle	73.5°
Chainstay / rear center	425 mm
Wheelbase	1045 mm
Bottom-bracket drop	78 mm
Bottom-bracket height	280 mm
Reach	397 mm
Stack	622 mm
Standover height	798 mm

Geometry · XL · Gravel

Seat tube	535 mm
Effective top tube	611 mm
Head tube	221 mm
Head-tube angle	72°
Seat-tube angle	73°
Actual seat-tube angle	73°
Chainstay / rear center	425 mm
Wheelbase	1067 mm
Bottom-bracket drop	78 mm
Bottom-bracket height	280 mm
Reach	412 mm
Stack	650 mm
Standover height	833 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 13, 2026.