Specialized

2023 Specialized Jett 20 Single Speed

Previous used estimate

$107 - $110

Actual value depends on condition, size, and local demand.

2023 Specialized Jett 20 Single Speed

Value Guide market data · 2023 Specialized Jett 20 Single Speed

12-month projected trend

11%

Direction and magnitude, not judgment

vs. category average

29%

Drops faster than category avg

Price over time - 2023 Specialized Jett 20 Single Speed

$425$240$55MSRPMSRPYr 1Yr 2Yr 3Yr 4Yr 5Yr 6Yr 7Yr 7Yr 8Yr 9Yr 10Yr 11Yr 12Yr 13Yr 14Yr 14Yr 15Yr 16Yr 17Yr 18Yr 19Yr 20Yr 20

Values based on actual sales data. Enter your bike's specifics to get a precise valuation.

All Jett model years

Compare Jett 20 Single Speed models

1 models

Choose a different build or frame style to see its value.

Overview

About this bike

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 Retul 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 Retul 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.

Specifications

Subtype
Cross Country
Category
Mountain
Component Fork
A1 Premium Butted Alloy, Alloy steerer, V-Brake
Component Hubs
Front: Alloy, Loose Ball Bearings, Bolt type, 100mm Spacing, 28H Rear: Alloy, Loose Ball Bearings, Bolt type, 110mm Spacing, 28H
Component Rims
Alloy, 14mm Depth, 23mm Internal Width, 28H
Component Size
20-inch
Component Stem
3D Forged Aluminum, 35mm length, 6 degree rise, 25.4mm clamp diameter
Product Family
Jett
Component Chain
KMC Z1 EPT (Anti-Rust)
Component Color
Gloss Cobalt/Ice Blue, Gloss Flo Red/White, Gloss Oasis/Forest Green
Component Frame
A1 Premium Butted Alloy, unisex frame, internal cable routing, 110x10mm dropouts
Component Brakes
V-brake w/ tool-less reach adjust brake lever
Component Pedals
Nylon platform w/ reflectors
Component Saddle
Kids Bridge Saddle, 130mm
Component Spokes
Stainless, 14g
Component Crankset
Forged Alloy, Square Taper, Single Speed, w/ Chainguard
Component Seatpost
Alloy, 2-bolt, 14mm offset, 27.2mm, 280mm length
Component Handlebar
Alloy Mini Rise, Double Butted, 60mm Rise, 5-degree Backsweep, 580mm Width, 25.4mm Clamp Diameter, 19mm Bar End Diameter
Component Rear Tire
Pathfinder Sport, 20 x 2.0"
Component Chainrings
34T
Component Front Tire
Pathfinder Sport, 20 x 2.0"
Component Tape Grips
Jett Body Geometry, 19mm Internal Diameter, lock-on
Component Bottom Bracket
Square taper, Plastic cups, 113mm spindle
Component Cassette Freewheel
18T Freewheel
Hubs
Front: Alloy, Loose Ball Bearings, Bolt type, 100mm Spacing, 28H Rear: Alloy, Loose Ball Bearings, Bolt type, 110mm Spacing, 28H
Rims
Alloy, 14mm Depth, 23mm Internal Width, 28H
Crankset
Forged Alloy, Square Taper, Single Speed, w/ Chainguard
Pedals
Nylon platform w/ reflectors
Bottom Bracket
Square taper, Plastic cups, 113mm spindle
Chain
KMC Z1 EPT (Anti-Rust)
Seatpost
Alloy, 2-bolt, 14mm offset, 27.2mm, 280mm length
Saddle
Kids Bridge Saddle, 130mm
Handlebar
Alloy Mini Rise, Double Butted, 60mm Rise, 5-degree Backsweep, 580mm Width, 25.4mm Clamp Diameter, 19mm Bar End Diameter
Rear Tire
Pathfinder Sport, 20 x 2.0"
Stem
3D Forged Aluminum, 35mm length, 6 degree rise, 25.4mm clamp diameter
Brakes
V-brake w/ tool-less reach adjust brake lever
Chainrings
34T
Fork
A1 Premium Butted Alloy, Alloy steerer, V-Brake
Frame
A1 Premium Butted Alloy, unisex frame, internal cable routing, 110x10mm dropouts
Tape/Grips
Jett Body Geometry, 19mm Internal Diameter, lock-on
Color
Gloss Oasis/Forest Green
Size
20-inch
Spokes
Stainless, 14g
Cassette/Freewheel
18T Freewheel
Front Tire
Pathfinder Sport, 20 x 2.0"

What to check when buying used

Inspection

Frame condition

Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.

Inspection

Drivetrain wear

Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.

Inspection

Service history

Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.

Inspection

Suspension service

Confirm fork and rear shock service intervals and check pivot bearings for play.

Shop Our Inventory