Bicycle Archive · Specification report

2026 X-LAB GT8

Velopedia Archive ID 900001318

Overview

Model year	2026
Brand	X-LAB
Model	GT8
Bicycle type	Cyclocross/Gravel
Archive ID	900001318
Original MSRP	$3,199.00
Colors	Afterburner Black, Slipstream, Recon Green
Sizes	XS, S, M, L, XL, XXL
Weight	8.78 kg / 19.31 lbs (Size M)

Frameset

Frame construction	XDS Carbon Frame, Toray T-800, UDH Compatible
Frame material	Carbon
Fork	XDS Carbon Fork, Toray T-800, 100x12mm Thru-Axle
Fork material	Carbon

Drivetrain

Component group	GRX Di2
Shifters	Shimano GRX ST-RX717 Di2
Rear derailleur	Shimano GRX RD-RX717 Di2
Crankset	Branta Alloy Power Meter Crankset, 40T, Narrow-wide Teeth; 24mm Steel Spindle, Apple Find My Anti-Theft Technology
Bottom bracket	T47 24mm
Cassette	Shimano CS-M6100-12, 10-51T
Chain	Shimano CN-M6100

Brakes

Brakes	Shimano GRX BR-RX410; Rotors: Shimano SM-CL700, F:160mm R:160mm

Cockpit & contact points

Handlebar	Branta Gravel Carbon Handlebar
Stem	Branta Carbon Stem
Saddle	Fizik Terra Argo X7
Seatpost	XDS Carbon 27.2mm

Wheels & tires

Wheels	Branta C45 Gravel Carbon Wheelset, Stainless Steel Spokes
Front tire	Continental Terra Trail 700x45C; Max Tire Clearance: 55C
Rear tire	Continental Terra Trail 700x45C; Max Tire Clearance: 55C
Wheel size	700C

Geometry · XS

Seat tube	435 mm
Top tube	506 mm
Head tube	80 mm
Head-tube angle	70°
Seat-tube angle	76°
Chainstay / rear center	435 mm
Wheelbase	1020 mm
Bottom-bracket drop	80 mm
Reach	370 mm
Stack	519 mm
Standover height	715 mm
Front center	598 mm

Geometry · S

Seat tube	447 mm
Top tube	525 mm
Head tube	100 mm
Head-tube angle	70°
Seat-tube angle	75°
Chainstay / rear center	435 mm
Wheelbase	1032 mm
Bottom-bracket drop	80 mm
Reach	379 mm
Stack	540 mm
Standover height	730 mm
Front center	610 mm

Geometry · M

Seat tube	471 mm
Top tube	547 mm
Head tube	120 mm
Head-tube angle	71°
Seat-tube angle	74°
Chainstay / rear center	435 mm
Wheelbase	1031 mm
Bottom-bracket drop	80 mm
Reach	384 mm
Stack	565 mm
Standover height	755 mm
Front center	609 mm

Geometry · L

Seat tube	491 mm
Top tube	566 mm
Head tube	140 mm
Head-tube angle	71°
Seat-tube angle	74°
Chainstay / rear center	435 mm
Wheelbase	1046 mm
Bottom-bracket drop	80 mm
Reach	392 mm
Stack	584 mm
Standover height	773 mm
Front center	624 mm

Geometry · XL

Seat tube	532 mm
Top tube	585 mm
Head tube	165 mm
Head-tube angle	71°
Seat-tube angle	73°
Chainstay / rear center	435 mm
Wheelbase	1061 mm
Bottom-bracket drop	80 mm
Reach	399 mm
Stack	607 mm
Standover height	807 mm
Front center	638 mm

Geometry · XXL

Seat tube	577 mm
Top tube	605 mm
Head tube	190 mm
Head-tube angle	71°
Seat-tube angle	73°
Chainstay / rear center	435 mm
Wheelbase	1078 mm
Bottom-bracket drop	80 mm
Reach	408 mm
Stack	631 mm
Standover height	838 mm
Front center	655 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 23, 2026.