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Jett 20

Jett 20

We deliver! Just say when and how.

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—they’ll always be set to Jett.

The Jett Multispeed features an adjustable handlebar that allows kids to fine tune reach as their arms grow. The 2-hole position cranks combined with longer seat tubes give plenty of flexibility to dial-in the optimal pedaling position. And whats 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.

Technical Specifications



A1 Premium Butted Alloy, unisex frame, internal cable routing, 135x10mm forged dropouts, replaceable derailleur hanger


A1 Premium Butted Alloy, Alloy steerer, V-Brake

Seat Binder

Bolt-type, 31.8mm



3D Forged Aluminum, 35mm length, 6 degree rise, 25.4mm clamp diameter


Alloy Mini Rise, Double Butted, 60mm Rise, 5-degree Backsweep, 580mm Width, 25.4mm Clamp Diameter, 19mm Bar End Diameter


Jett Body Geometry, 19mm Internal Diameter, lock-on


Kids Bridge Saddle, 130mm


Alloy, 2-bolt, 14mm offset, 27.2mm, 280mm length


Front Brake

V-brake w/ tool-less reach adjust brake lever

Rear Brake

V-brake w/ tool-less reach adjust brake lever



SunRace, 7-Speed, 11-34t




Forged Alloy, Square Taper, Adjustable 105/125mm Length, w/ Chainguard


Forged Alloy, 34T

Bottom Bracket

Square taper, Plastic cups, 113mm spindle

Rear Derailleur

Shimano RD-M310, 7-speed

Shift Levers

microSHIFT TS39 , 7-speed

Wheels & Tires


Alloy, 14mm Depth, 23mm Internal Width, 28H

Front Hub

Alloy, Loose Ball Bearings, Bolt type, 100mm Spacing, 28H

Rear Hub

Alloy, Loose Ball Bearings, Bolt type, 135mm Spacing, 28H


Stainless, 14g

Front Tire

Pathfinder Sport, 20x2.0"

Rear Tire

Pathfinder Sport, 20x2.0"

Inner Tubes

Schrader, 32mm valve



Nylon platform w/ reflectors

* Weights based on production painted frames as pictured. Actual weights will vary based on colorway, frame size, and component variation. Specifications are subject to change without notice.


Crank Length105/125mm
Handlebar Width580mm
Stem Length35mm
Saddle Width130mm
Seatpost Length280mm
Head-Tube Length100mm
Head-Tube Angle69°
B-B Height229.5mm
B-B Drop30mm
Fork Length (full)305mm
Fork Rake/Offset40mm
Chain-Stay Length350mm
Top-Tube Length (horizontal)417mm
Bike Stand-Over Height510mm
Seat-Tube Length290mm
Seat-Tube Angle73°

Ready to Jett

When your Jett arrives, rest assured that you’ll have everything you’ll need to get ready to roll. On the Set Up My Jett page, you’ll find an assembly video, the Jett Fit Tool, and many more resources for the perfect first ride.

Ship to Home

We can ship your new Jett or Hotwalk right to your door with our Ship to Home delivery. With clear instructions and the tools you’ll need, your new Specialized will be ready to roll in just a few simple steps, no experience needed.

A Bike That Lasts Longer

We build our bikes for a lifetime of riding. We hope you discover the impact a bike can have on a kid’s life, and we hope that the next owners discover the same. When your Jett reaches the end of its use, donate it to your local Free Bikes 4 Kidz organization to help get more kids on bikes.

Introducing The Jett
Introducing The Jett

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