Specialized Jett 20 Singlespeed flo red Kinderbike

Kids move fast, and grow faster. At times, it can seem like there’s a small window for the perfect bike fit. The right bike for a young rider is a delicate balance between too small, too big, and a short-lived just right. If we’re going to inspire the next generation of riders, we need to keep kids comfortably riding longer.

The Jett is designed so that you’ll never fear the growth spurts. We did our homework to understand how kids grow—spoiler alert, kids’ arms and legs grow more rapidly than their torso. We took to the books and designed a bike with child-specific touch points that withstand the development of young riders. The Jett is uniquely adjustable, perfectly proportional, and child-liftable—you’ll always be set to Jett.

The Jett Single Speed features an adjustable handlebar that allows kids to fine tune reach as their arms grow. The narrower saddle and grips were informed by a Retül study on kids to be the appropriately size—with handbrakes on both the 16” and 20”. And what’s more, we designed the frame and reviewed every component to make the Jett one of the lightest bikes on the market. You’re going to have to beg them to get off this bike.

We designed the Jett Single Speed to be uniquely adjustable with longer seatposts and adjustable handlebars so kids can dial-in the perfect riding position as they grow.
Every detail of the Jett Single Speed—including the 130mm Bridge saddle, narrower-diameter grips, and short-reach, tool-less adjustable brake levers—was informed by Retül data from a kids’ research group to be perfectly proportional for young riders.
A lightweight bike is simply more fun and the Jett Single Speed’s all-new A1 aluminum frame, alloy fork, Pathfinder tires, and single-speed drivetrain make it one of the lightest kids’ bikes on the market.

Technical Specifications

FRAMESET
Fork
A1 Premium Butted Alloy, Alloy steerer, V-Brake
Seat Binder
Bolt-type, 31.8mm
Frame
A1 Premium Butted Alloy, unisex frame, internal cable routing, 110x10mm dropouts

COCKPIT
Stem
3D Forged Aluminum, 35mm length, 6 degree rise, 25.4mm clamp diameter
Handlebars
Alloy Mini Rise, Double Butted, 60mm Rise, 5-degree Backsweep, 580mm Width, 25.4mm Clamp Diameter, 19mm Bar End Diameter
Grips
Jett Body Geometry, 19mm Internal Diameter, lock-on
Saddle
Kids Bridge Saddle, 130mm
SeatPost
Alloy, 2-bolt, 14mm offset, 27.2mm, 280mm length

BRAKES
Front Brake
V-brake w/ tool-less reach adjust brake lever
Rear Brake
V-brake w/ tool-less reach adjust brake lever

DRIVETRAIN
Bottom Bracket
Square taper, Plastic cups, 113mm spindle
Cassette
18t Freewheel
Chain
KMC Z1 EPT (Anti-Rust)
Crankset
Forged Alloy, Square Taper, Single Speed, w/ Chainguard
Chainrings
34T

ACCESSORIES
Pedals
Nylon platform w/ reflectors

WHEELS
Rims
Alloy, 14mm Depth, 23mm Internal Width, 28H
Front Hub
Alloy, Loose Ball Bearings, Bolt type, 100mm Spacing, 28H
Spokes
Stainless, 14g
Front Tire
Pathfinder Sport, 20x2.0"
Rear Tire
Pathfinder Sport, 20x2.0"
Inner Tubes
Schrader, 32mm valve
Rear Hub
Alloy, Loose Ball Bearings, Bolt type, 110mm Spacing, 28H

* Specifications are subject to change without notice