A carbon gravel platform built for riders who want speed, clearance, storage, and versatility in one system. With internal downtube storage, generous tire clearance, and adventure-ready geometry, the GT8 frameset is ready for race days, long routes, and everything off the map.
$1,999
Free Shipping in the Contiguous U.S.
Free shipping applies to delivery addresses within the contiguous 48 U.S. states only. Alaska, Hawaii, Puerto Rico, Guam, and other U.S. territories are excluded. Additional shipping charges may apply to excluded locations.
Free shipping applies to delivery addresses within the contiguous 48 U.S. states only. Alaska, Hawaii, Puerto Rico, Guam, and other U.S. territories are excluded. Additional shipping charges may apply to excluded locations.
For the best experience, framesets are currently available only through our authorized dealers for professional assembly, setup, and ongoing service.Find A Dealer
Delivery within 14 days
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Size Chart
GT8 Frameset
Frame Size
Rider Height
XS
(46cm)
148 cm – 158 cm
4' 10" - 5' 2"
S
(50cm)
158 cm – 168 cm
5' 2" - 5' 6"
M
(54cm)
168 cm – 176 cm
5' 6" - 5' 9"
L
(56cm)
176 cm – 183 cm
5' 9" - 6' 0"
XL
(58cm)
183 cm – 191 cm
6' 0" - 6' 3"
XXL
(62cm)
191 cm – 202 cm
6' 3" - 6' 7"
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Sizing Guide
Sizing Guide
When purchasing a new bicycle, choosing the right size can do wonders for your ride experience. Use this sizing guide as a reference. If you’re in between two sizes, you can size up or down depending on your riding preference.
For the best results, we’d recommend visiting one of the many bike shops in our network to be fitted properly by a professional.
Your Measurements
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Size Recommendation
Based on your measurements, we recommend this frame size.
Best size for you:
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Your measurements:
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Best size for you:
—
Based on your measurements, your recommended size is
—. However, to ensure your comfort, safety, and the best riding experience, we recommend visiting an
authorized X-LAB dealer
to test ride both sizes before making your final decision.
Let’s Find Your Best Fit
Your measurements appear to fall outside our current size range for this bike. For your comfort, safety, and best riding experience, we recommend speaking with an
authorized X-LAB dealer
or
contacting our support team
before choosing a size.
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Notify Me
You have great taste – this bike sold out fast! If you want first dibs, drop your email and we’ll let you know as soon as it’s back in stock.
X-LAB GT8
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.
Highlights GT8 Frameset
Technical Specifications
FRAME
XDS Carbon Frame, Toray T-800, UDH Compatible
FORK
XDS Carbon Fork, Toray T-800, 100x12mm Thru-Axle
SEATPOST
XDS Carbon 27.2mm
WEIGHT
1.78 kg / 3.92 lbs (Size M, w/o headsets)
SIZE OPTIONS
XS / S / M / L / XL / XXL
*Continuous Product Improvement
Innovation never stands still. As part of our commitment to building the best possible bicycles, X-LAB reserves the right to update specifications, components, colors, and other product details at any time without notice. We make every effort to keep our published specifications current, but minor variations may occur between production batches. Please contact your local X-LAB dealer or Customer Support if you would like to confirm the latest specifications before purchase.
product geometry anchor
Geometry & Dimensions
Basic geometry
title
XS
S
M
L
XL
XXL
A — Seat Tube Length
435mm
447mm
471mm
491mm
532mm
577mm
B — Top Tube Length
506mm
525mm
547mm
566mm
585mm
605mm
C — Head Tube Length
80mm
100mm
120mm
140mm
165mm
190mm
D — Seat Tube Angle
76°
75°
74°
74°
73°
73°
E — Head Tube Angle
70°
70°
71°
71°
71°
71°
F — Chainstay
435mm
435mm
435mm
435mm
435mm
435mm
G — Wheelbase
1020mm
1032mm
1031mm
1046mm
1061mm
1078mm
H — Bottom Bracket Drop
80mm
80mm
80mm
80mm
80mm
80mm
I — Stack
519mm
540mm
565mm
584mm
607mm
631mm
J — Reach
370mm
379mm
384mm
392mm
399mm
408mm
K — Front Center
598mm
610mm
609mm
624mm
638mm
655mm
O — Stand Over
715mm
730mm
755mm
773mm
807mm
838mm
A — Seat Tube Length
435mm
B — Top Tube Length
506mm
C — Head Tube Length
80mm
D — Seat Tube Angle
76°
E — Head Tube Angle
70°
F — Chainstay
435mm
G — Wheelbase
1020mm
H — Bottom Bracket Drop
80mm
I — Stack
519mm
J — Reach
370mm
K — Front Center
598mm
O — Stand Over
715mm
A — Seat Tube Length
447mm
B — Top Tube Length
525mm
C — Head Tube Length
100mm
D — Seat Tube Angle
75°
E — Head Tube Angle
70°
F — Chainstay
435mm
G — Wheelbase
1032mm
H — Bottom Bracket Drop
80mm
I — Stack
540mm
J — Reach
379mm
K — Front Center
610mm
O — Stand Over
730mm
A — Seat Tube Length
471mm
B — Top Tube Length
547mm
C — Head Tube Length
120mm
D — Seat Tube Angle
74°
E — Head Tube Angle
71°
F — Chainstay
435mm
G — Wheelbase
1031mm
H — Bottom Bracket Drop
80mm
I — Stack
565mm
J — Reach
384mm
K — Front Center
609mm
O — Stand Over
755mm
A — Seat Tube Length
491mm
B — Top Tube Length
566mm
C — Head Tube Length
140mm
D — Seat Tube Angle
74°
E — Head Tube Angle
71°
F — Chainstay
435mm
G — Wheelbase
1046mm
H — Bottom Bracket Drop
80mm
I — Stack
584mm
J — Reach
392mm
K — Front Center
624mm
O — Stand Over
773mm
A — Seat Tube Length
532mm
B — Top Tube Length
585mm
C — Head Tube Length
165mm
D — Seat Tube Angle
73°
E — Head Tube Angle
71°
F — Chainstay
435mm
G — Wheelbase
1061mm
H — Bottom Bracket Drop
80mm
I — Stack
607mm
J — Reach
399mm
K — Front Center
638mm
O — Stand Over
807mm
A — Seat Tube Length
577mm
B — Top Tube Length
605mm
C — Head Tube Length
190mm
D — Seat Tube Angle
73°
E — Head Tube Angle
71°
F — Chainstay
435mm
G — Wheelbase
1078mm
H — Bottom Bracket Drop
80mm
I — Stack
631mm
J — Reach
408mm
K — Front Center
655mm
O — Stand Over
838mm
FAQ
General
What rider type is the GT8 designed for?
GT8 is designed to be a phenomenal do-it-all gravel bike. It can handle adventure rides, gravel racing, and short bikepacking trips. GT8 is a great option for any type of new or experienced gravel rider.
What’s the weight limit for the bike?
GT8 has a weight limit of 242 lbs (110kg), which includes the rider and any gear or cargo.
Can the frameset be purchased separately?
Yes, the GT8 frameset and other major components (including cockpit, crank, and wheels) are available for purchase.
Does the bike have downtube storage?
Yes, GT8 has an integrated storage compartment on the downtube of the frame. A storage bag designed for this frame storage compartment is also provided with GT8.
Does the bike have additional mounting points for cargo or extra water?
In addition to the standard water bottle mounting locations on the downtube and seat tube, GT8 also has mounting locations on the top tube, underside of the downtube, and both fork legs.
Where can my bike be serviced and repaired?
Any local bike shop will be able to provide general service for your GT8. For any component customization or warranty issues, we recommend going to an X-LAB dealer to receive the best expert guidance and support.
Technical
Is the frame compatible with SRAM groupsets?
Yes, the GT8 frame is compatible with most wired, wireless, or mechanical groupsets from all major drivetrain brands. GT8 comes with a 1x drivetrain, but it is compatible with both 1x and 2x drivetrain options.
What is the maximum tire clearance?
GT8 has clearance for up to 55 mm tires.
Does it use a UDH (Universal Derailleur Hanger)?
Yes, GT8 uses a UDH.
What is the maximum chainring size supported?
GT8 can fit up to 44T Shimano or 42T SRAM 1x front chainrings. For 2x, GT8 can fit up to 48-31T front chainrings.
What cockpit size options are available to purchase?
X-LAB offers 3 different stem options and 3 different handlebar options for GT8.
Additionally, you can use aftermarket cockpits from brands like FSA/Vision with their ACR Cone Spacer available here.
Is the frame compatible with dropper seat posts?
Yes, a standard dropper post can be installed and internally routed on GT8. GT8 has a standard 27.2mm round seat tube.
Is the frame compatible with a suspension fork?
Due to the impacts on geometry and handling, we don’t recommend installing a suspension fork on GT8.
Support, Built Around Your Ride
From first setup to long-term service, X-LAB is designed to keep you riding with confidence.