FIT Custom


X90 Mountain Folding Bike

Road Frame

The FIT Custom 700c road frameset is perfect for the roadie looking for a custom build with added portability. Carbon fork included.

The Essentials

• Supports 10 or 11 speed cassettes
• Wheel Size: 700c
• Folding Time: 20 sec.
• Folded Size: 36″x28″x12″ (complete)
• Approx Weight: 5.2 lbs (2350 grams).
Uncut fork is 1.6 lbs (725 grams)
• M.S.R.P: $799.99


Great For

• Long rides.
• Road or gravel bike builds.
• Weekend getaways.
• Getting in a workout.

Bike Sizing

• 17in Frame: For riders 4’8″ – 5’2″.
Standover height is 27″
• 19in Frame: For riders 5’3″ – 5’10”.
Standover height is 28″
• 21in Frame: For riders 5’11” – 6’4″.
Standover height is 29″


The FIT Custom is a lightweight, 700c, road bike ideal for fitness and commuting use. It folds in under 20 seconds without the use of tools, offering flexibility in today’s multi-tasking world. The FIT is a fast, sleek road frameset that can maneuver around the city, and fold up to go aboard a train or bus for ultimate versatility. It comes in 17″, 19” and 21” frame sizes, can support up to 30 speeds, and comes with a carbon blade fork.

FIT Custom Folding Frame Folded
FIT Frame CLIX QR Closeup

CLIX Folding System

Clever integration of CLIX technology allows for the FIT Custom to be folded in under 20 seconds without the use of tools. A flip of the CLIX quick release lever on the top tube and the folding bike morphs to a compact size.

Folding Integrated Technology

The FIT frame is designed around a patented folding system. This design eliminates the need to break the frame in order to fold the bike. Not only does this make folding easier but it makes this bike the strongest folding bike on the market. The Folding Integrated Technology (F.I.T.) is based around frame construction concepts designed for serious full suspension downhill bikes.

Learn More
FIT Frame Folding System Closeup
FIT Frame Carbon Fork Closeup

Carbon Fiber Fork

The carbon blade fork enhances the FIT’s maneuverability – whether you’re commuting, enjoying a long ride, or off to the races. The straight, lighter weight blades mean the bike’s steering is exceptionally responsive – perfect for navigating the city streets, back roads or bike paths.


Color Gloss green front frame.  Gloss black rear frame.
Material Custom drawn 7005 Series Aluminum tubing with FIT System. Disc brake mount and removable rear derailleur hanger.
Sizes 17″, 19”, 21”
Bottom Bracket 68mm English Threaded
Seat Post Diameter 30.0mm
Head Tube Diameter 1-1/8″
Fork Carbon blades.  For caliper rim brake or disc brake.  1-1/8″ steerer tube.
Rear Frame O.L.D. Spacing 135mm. Verical dropouts.
Drive Train Compatible with 10 or 11 speed cassettes


Find a dealer or distributor to purchase your new Montague folding bike.

How to Buy

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