X-LAB GT8 GRX717 Di2 Afterburner

Price
$5,799.99
Size:XS
This item is temporary out of stock

Adventure-ready gravel bike built for control, comfort, and conquest.


The GT8 is X-LAB’s first gravel platform, built for riders who see every road as an invitation.


Designed for stability, control, and long-distance comfort, the GT8 transitions effortlessly from pavement to dirt, city streets to open trails.


With confident handling and durable carbon construction, it’s a gravel bike that encourages exploration without limits.


Wherever the road disappears, the GT8 keeps going.


Where Gravel Gets Interesting

The GT8 is made for the rides that don’t follow a route. It was born to master uneven terrain, unknown turns, and long mixed-surface days where stability, speed, and confidence all matter at once.


Clearance That Changes the Ride

With up to 55mm tire clearance, the GT8 opens the door to bigger comfort, more grip, and more capability wrapped in colorways that look as fierce as they feel.


The Seat Stay Advantage

A unique seat stay design balances strength, compliance, and precision handling. The GT8 is built to maximize ride performance while staying true to modern gravel standards and race-ready intent.


Key Features

Branta C45 Gravel carbon wheelset

Shimano GRX 717 Di2 groupset

Branta alloy crankset with integrated power meter and Apple Find My anti-theft technology

In-frame storage and accessory mounting points on frame and fork

















































































Model GT8
Frame X-LAB Carbon Frame, Toray T800, UDH Compatible
Fork X-LAB Carbon Fork, 100x12mm Thru-axle
Stem Branta Carbon Stem
Handlebar Branta Gravel Carbon Handlebar
Seatpost XDS Carbon 27.2mm Seatpost
Rear Derailleur Shimano GRX RD-RX717
Front Derailleur /
Shifters Shimano GRX ST-RX717
Brakes Shimano GRX BR-RX715
Cassette Shimano CS-M6200-12, 10-51T
Crankset Branta Aluminum Power Meter Crankset, 40T, Narrow-wide Teeth, 29mm Aluminum Spindle, Apple Find My Anti-Theft Technology
Bottom Bracket T47 24mm
Rotors Shimano SM-RT70, Front: 160mm / Rear: 160mm
Chain Shimano CN-M6100
Wheelset Branta C45 GT Carbon Wheelset, Steel Spokes
Tires Continental Terra Trail 700x45C
Saddle Fizik Terra Argo X7
Weight 8.78KG (Size M)

























































































































































Frame Size XS S M L XL XXL
A Stack (mm) 519 540 565 584 607 631
B Reach (mm) 370 379 384 392 399 408
C Head Tube Angle (deg) 70 70 71 71 71 71
D Head Tube Length (mm) 80 100 120 140 165 190
E Seat Tube Angle (deg) 76 75 74 74 73 73
F Seat Tube Length (mm) 435 447 471 491 532 577
G Chainstay Length (mm) 435 435 435 435 435 435
H BB Drop (mm) 80 80 80 80 80 80
I Wheelbase (mm) 1020 1032 1031 1046 1061 1078
J Top Tube Length (mm) 506 525 547 566 585 605
K Front Center (mm) 598 610 609 624 638 655
L Stand-over Height (mm) 715 730 755 773 807 838
M Fork Rake/Offset (mm) 55 55 50 50 50 50
N Trail (mm) 75 72 70 70 70 70





















































Components XS S M L XL XXL
Stem 70 70 80 90 100 100
Handlebar 370/430 370/430 390/450 390/450 410/470 410/470
Crankset 165 165 170 170 172.5 172.5
Seat Post 300 300 350 350 350 350























Sizing Size XS S M L XL XXL
Recommended Rider Height 148 cm – 158 cm
4'10" - 5'2"
158 cm – 168 cm
5'2" - 5'6"
168 cm – 176 cm
5'6" - 5'9"
176 cm – 183 cm
5'9" - 6'0"
183 cm – 191 cm
6'0" - 6'3"
191 cm – 202 cm
6'3" - 6'7"
Shipping Information

Our on-line store is open 24/7 and we ship Monday through Friday, excluding some holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 12:00 p.m. PST. Orders in high demand will have an estimated production time listed on its product page and will ship according to the date listed.

About Us

Bikefit Marlborough exists to grow Cycling, through our Knowledge, Passion and outstanding Customer Service.

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