Specialized Jett 20 2021

SKU: 173691-O/S-BZBK
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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 Specialized Jett 20 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.

  • We designed the Jett Multispeed to be uniquely adjustable with 2-hole position cranks, adjustable handlebars, and longer seatposts so kids can dial-in the perfect riding position as they grow.

  • Every detail of the Jett Multispeed—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 Multispeed’s all-new A1 aluminum frame, alloy fork, Pathfinder tires, and 7-speed drivetrain make it one of the lightest kids’ bikes on the market.


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

  • Fork A1 Premium Butted Alloy, Alloy steerer, V-Brake

  • Seat Binder Bolt-type, 31.8mm

  • 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

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

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

  • Cassette SunRace, 7-Speed, 11-34t

  • Chain KMC HV500

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

  • Chainrings Forged Alloy, 34T

  • Bottom BracketSquare taper, Plastic cups, 113mm spindle

  • Rear DerailleurmicroSHIFT RD-M26S, 7-speed

  • Shift Levers microSHIFT TS39 Trigger shift, 7-speed

  • Pedals Nylon platform w/ reflectors

  • 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, 135mm Spacing, 28H

  • Spokes Stainless, 14g

  • Front Tire Pathfinder Sport, 20x2.0"

  • Rear Tire Pathfinder Sport, 20x2.0"

  • Inner Tubes Schrader, 32mm valve