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Jett 16 Single Speed

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Jett 16 Single Speed

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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.

Technical Specifications

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Drivetrain

Cassette

16t Freewheel

Chain

KMC Z1 EPT (Anti-Rust)

Crankset

Forged Alloy, Square Taper, Single Speed, w/ Chainguard

Chainrings

26T

Bottom Bracket

Square taper, Plastic cups, 113mm spindle

Cockpit

Saddle

Kids Bridge Saddle, 130mm

Stem

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

Handlebars

Alloy Mini Rise, Double Butted, 40mm Rise, 5-degree Backsweep, 580mm Width, 25.4mm Clamp Diameter, 19mm Bar End Diameter

Grips

Specialized Trail Grips, 19mm bar end diameter, Slip-On

SeatPost

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

Frameset

Frame

A1 Premium Butted Alloy, unisex frame, internal cable routing, 110x10mm dropouts

Fork

A1 Premium Butted Alloy, Alloy steerer, V-Brake

Seat Binder

Bolt-type, 31.8mm

Wheels & Tires

Rims

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, 110mm Spacing, 28H

Spokes

Stainless, 14g

Front Tire

Pathfinder Sport, 16x2.0"

Rear Tire

Pathfinder Sport, 16x2.0"

Inner Tubes

Schrader, 32mm valve

Accessories

Pedals

Nylon platform w/ reflectors

Brakes

Front Brake

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

Rear Brake

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

* 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.

Geometry

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16"
Stack338mm
Reach270mm
Head-Tube Length80mm
Head-Tube Angle69°
B-B Height180mm
B-B Drop25mm
Trail52mm
Fork Length (full)260mm
Fork Rake/Offset25mm
Front-Center418mm
Chain-Stay Length280mm
Wheelbase696mm
Top-Tube Length (horizontal)386mm
Bike Stand-Over Height420mm
Seat-Tube Length250mm
Seat-Tube Angle71°
Geometry

Rider Reviews

  • 4.3
  • 24 Reviews
 

Awesome specs and great value

I have paid more for a derailleur than this whole bike cost... That said this bike has excellent specs. The biggest positive about this bike is the freehub. Coaster bikes are horrible for kids learning. This is the perfect bike for kids coming from a strider. The hand brakes have tons of adjustment to dial in the best hand placement. My daughter started pedaling and now she's a natural. The paint on these frames is fire too. She's 4 years old. Her feet fit flat on the ground. Geometry is dialed.


Name:
Erik

Helpful?

Great little bike

My daughter has resisted learning to ride a bike. She is 47" tall so definitely almost too big for this bike. I hesitated buying a bike she will be almost too big for, but I wanted her to be able to feel confident that she wouldn't wipe out b/c of the weight & size of the bike. She spent 30-45 min the first day just gliding on it with her legs hanging over the pedals, then the 2nd day she told me not to help and figured out the pedals in less than 30 minutes. Unlike some other bikes, the handle bars are lower, which makes the bike look even smaller on her, but provided her more control. Only complaint is she said the bike seat isn't comfortable so i'll be looking for a cushion or replacement seat (took off a star for the seat). Happy with the price point (with sale) and quality of bike and will pass it on to her younger sibling when she's done. We will likely move her up to a 20" soon.


Name:
Melissa

Helpful?

Perfect

Great bike. We transitioned from the hotwalk to this bike and my son had no problems at all. Quality is amazing the geometry is perfect. It’s awesome seeing the thought put into this bike for younger riders. I have had many friends purchase this bike after seeing my son on it and have the same experience.


Name:
Jason

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Excellent value but too tall

My 4 year old is above average height for his age and is ready to transition from his kick bike. The bike would be an excellent fit except he can barely tiptoe with the seat post dropped to the clamp. A kid learning to pedal should be able to flat foot to be confident and comfortable. This seems like it would be an easy fix for specialized as there is an extra 2” above the weld on the seat tube and at full extension the seat height is ridiculously high. Otherwise excellent bike quality for a super price, I would have given 5 stars if my kid wasn’t discouraged from the stand over. Last suggestion, this is a kids bike maybe some fun colors?


Name:
Gabe

Helpful?

Perfect Big Kid Bike

My 4 year old boy was 40'' tall on his birthday. With the seat all the way down, and the handle bars adjuted in, the bike fits hime perfectly. This is our second premium 16'' "mountian bike." My older boy had another brand. This bike is light years ahead of our old one. Aeronomical frame lets him in and out of cockpit easily. Nice length to the crank allows him to go fast enough and easily ride uphill, and you can tell the pedals are for a kids bike. They are bigger than his first bike and smaller than mine, perfect. The handlebars have multiple settings to pull the bars closer to the rider and the brakes! Awesome brakes! It is so hard to walk the line of tiny hands being able to pull them, and still deliver enough stopping power. This bike does it. He made the transition from coaster brakes to hand in 30 seconds. He is actually much better at the hand brakes then coaster. Then the Specialized Logoed tires are so cool. This bike made my boy a better rider. Just buy it!


Name:
VAUGHN

Helpful?

What you expect, but hard for short leg kids

My 3 year old is 40 inches tall with a long torso and shorter legs and can rip around on a Strider, but the Jett is still to tall for him to sit on the seat and touch the ground with his feet even at the lowest position. That makes learning to ride it nearly impossible in our experience. I'm sure it will be better once his legs are taller than 19-20 inches. With only a 16-17in stand over with a diaper in the way we probably need a few weeks to learn to ride or to wait for a leg growth spurt.


Verified Buyer

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Name:
DANA

Helpful?

Awesome bike

Cool bike. Seems like a good middle ground which has good features, decently light weight and at a good price. I would recommend, but for other bikes in this category the seat height is a bit tall for a new rider which is about 19.75 inches at the lowest. My son was in the recommended range at about 39 inches tall, but would not be able to touch the ground. No body can learn how to bike if they can’t touch the ground. I bought a mini pivotal race seat and post and with that it’s 18 inches off the ground. With being advertised as a beginning bike that will grow with your child, it seems to lack the capability for the earlier riders. Again nice bike as long as you know the most important part of a first real bike is if the seat can go low enough to learn how to bike


Name:
Benjamin

Helpful?

Child bike

Prompt delivery and everything as expected

Would Recommend?
Yes!

Verified Buyer

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Name:
Neil H.

Helpful?

Jett 16 inch

Perfect bike for my 4 year old grandson. The quality is top notch and he will get a couple of years on it as he grows, the the little sister will get it and he will move on to the 20 inch Specialized. And did I mention he loves it.

Would Recommend?
Yes!

Verified Buyer

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Name:
Norm S.

Helpful?

Nice bike, but don't trust size chart

Great bike, very nicely made. But too big for my 4 year old that is 39". His feet do not touch the ground. Now we have an expensive bike that can not be used.

Would Recommend?
Yes!

Name:
Brittney

Helpful?

Kids first “real” bike.

Was a little bit smaller than I anticipated but still a very well built bike. The components and quality are exactly what you would expect from specialized and the price point made it a no brainer. The kid LOVES it as her first bike without training wheels.

Would Recommend?
Yes!

Verified Buyer

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Name:
Steven B.

Helpful?

Buy these training wheels

This is a nice little bike but I have been frustrated in finding a pair of training wheels that easily fit. I'm here to save you the headache ... just order the Wald 10252 set.

Would Recommend?
Yes!

Name:
Nick

Helpful?

AWESOME BIKE!

This one here fell from Heaven! BD (((Random Act of Kindness))) My neigbors boyfriend gave me this bike brand new with tools & tags attached! My 6 year old grandaughter learned how to ride on this bike. Had it over s year now with no issues. Peddling is easy & handles great! She's outgrowing it and will be time for the little cousins to learn & share this beauty! I highly recomment this bike.

Would Recommend?
Yes!

Name:
Jose L.

Helpful?

Great single speed bike

This is a great little bike. Very well built and nice quality. It comes with fast Pathfinder Pro tires, nice seat, KMC EPT chain, extra chainring guard if you won’t want to run the big plastic one. You can retrofit training wheels if your child is not ready for 2 wheels yet. specializeds training wheels do not fit though. The only negative is that the seatpost needs to be cut down to lower the seat all the way if your child is on low end to start riding the bike. The gearing is a little low for riding around the neighborhood, it seems like 8mph is about the max speed for my son with a comfortable cadence

Would Recommend?
Yes!

Name:
Brian

Helpful?

A real bike! with 16" wheels

By far the best 16" built on the market today. Geometry is spot-on and one of the only ones I could find with handbrakes and a freewheel, that work great. This is a "real" bike for your kid, not a department store trinket.


Verified Buyer

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Name:
Arthur L.

Helpful?

First Time Rider

Geometry made all the difference in learning to ride a bike for the first time.

Would Recommend?
Yes!

Verified Buyer

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Name:
Eric S.

Helpful?

Phenomenal

My son is 4 and he absolutely loves this bike! It’s a perfect fit and lightweight enough where he can comfortably push it uphill if he needs to. Handlebars and nice and wide & the brakes are perfect for those little fingers.


Name:
Steve

Helpful?

Excellent bike (pt 2]

This is the second part of my review, in the first part of the review address the quality of the bike, and in this part I want to address the attention to detail. I was extremely impressed to find that the tire logos were lined up with the valve stem. That's a touch that you only find from mechanics who truly care about the quality of their work, and one that's becoming more difficult to find from off the shelf bikes. If a mechanic cares enough to pay attention to something that is no more than a cosmetic detail that 99% of people will never notice, then you know that they're also paying attention to the critical components dring assembly.

Would Recommend?
Yes!

Name:
Jason

Helpful?

Excellent bike!

I bought the bike online, so a little assembly was required (4 bolts to attach the bars) but specialized was absolutely brilliant in detaching the bars at the stem as there's no need to fuss with preload on the headset bearings or any adjustments that are critical. This bike even comes with a torque wrench, which I've never seen included with the bike before. The bike fits my kid well and the seat post has quite a bit of adjustment, so I think most kids will get at least two summers out of this bike if not more. She absolutely loves the bike it pedals nice and smooth and the brakes are amazing, and is a bonus they even have an adjustable reach so your kid doesn't need to have baseball mitts for hands to reach the lever. (Pt. 1/2)

Would Recommend?
Yes!

Name:
Jason

Helpful?

Perfect mini mountain bike for

Perfect mini mountain bike for my 3yr old. He loves the hand brakes and free wheel, a feature usually on only larger frames.

Would Recommend?
Yes!

Verified Buyer

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Name:
Guest G.

Helpful?

Great bike!

This is the perfect bike for a child that is comfortable riding already. Great stepping stone bike for a growing child, lightweight, good gearing, amazing hand brakes for small hands.

Would Recommend?
Yes!

Name:
Kelsey

Helpful?

Please advise! Not training wheel compatible

This bike looks great, but it is NOT training wheel compatible. They need to make this more apparent on the Product Detail page, and they also need to make it more apparent that the universal 16" training wheels sold on this website are also NOT compatible with this bike. It is incredibly frustrating from a user perspective to have to read a customer review to find this out. I also don't understand why you would make a universal training wheel, but then create a kid's bike that does not have the screws for the universal training wheel product. Very disappointed that there is no solution to get training wheels on this bike for my son.

Would Recommend?
Yes!

Name:
Leslee

Helpful?

Not a good transition from a balance bike

My son has outgrown his balance bike with ease so we decided to get him a bigger bike. He is 102cm tall which falls in the range for this bike. Well it seems it doesn’t. He doesn’t touch the floor, even with his toes. We are forced to either return it or get training wheels as he cannot ride it with no ground support whatsoever. I am very disappointed and sad that something that it took me so long to decide ends up backfiring horribly.

Would Recommend?
Yes!

Verified Buyer

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Name:
Nicolas

Helpful?

My 3 almost 4 year old loves it!!!

We just bought this bike today! My little hasn’t taken a break yet! We love this bike… only thing we had to modify was the seat… the one on it was too long. She had a hard time stopping because it hit in the wrong spot. With a smaller seat she has no problems.

Would Recommend?
Yes!

Name:
Heidi

Helpful?