The Jett 20 Single Speed is Specialized's lightweight 20 inch first-pedal bike for kids stepping up from a 16 inch. Single-speed drivetrain (no gears to worry about), V-brakes with kid-sized levers, and a sub-9 kg complete weight that a 5-7 year old can actually handle. The bike that makes the leap to a real bike feel natural.
Key Features
- A1 Premium Butted Alloy frame — sub-9 kg weight that kids can manoeuvre
- Single-speed drivetrain — simple, robust, perfect first-pedal experience
- V-brakes with tool-less reach-adjust levers — sized for small hands
- Specialized Pathfinder Sport tyres, 20×2.0 inch — fast on tarmac, grippy on dirt
- Suits riders ~110-130 cm tall (typically 5-7 year olds)
Why You'll Love It
For Mackay kids ready to ride to school, ride to the park, or join you on a Bluewater Trail loop — the Jett 20 Single Speed is the bike. Light enough to manage, simple enough not to overwhelm. We size every kid in-store at Mackay Cycles to make sure the bike fits before they walk out.
Technical Specifications
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Frame: A1 Premium Butted Alloy, unisex frame, internal cable routing, 110x10mm dropouts
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Fork: A1 Premium Butted Alloy, Alloy steerer, V-Brake
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Crankset: Forged Alloy, Square Taper, Single Speed, w/ Chainguard
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Bottom Bracket: Square taper, Plastic cups, 113mm spindle
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Chain: KMC Z1 EPT (Anti-Rust)
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Cassette: 18t Freewheel
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Front Brake: V-brake w/ tool-less reach adjust brake lever
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Rear Brake: V-brake w/ tool-less reach adjust brake lever
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Front Hub: Alloy, Loose Ball Bearings, Bolt type, 100mm Spacing, 28H
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Rear Hub: Alloy, Loose Ball Bearings, Bolt type, 110mm Spacing, 28H
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Rims: Alloy, 14mm Depth, 23mm Internal Width, 28H
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Spokes: Stainless, 14g
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Front Tyre: Pathfinder Sport, 20x2.0"
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Rear Tyre: Pathfinder Sport, 20x2.0"
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Inner Tubes: Schrader, 32mm valve
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Handlebars: Alloy Mini Rise, Double Butted, 60mm Rise, 5-degree Backsweep, 580mm Width, 25.4mm Clamp Diameter, 19mm Bar End Diameter
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Stem: 3D Forged Aluminum, 35mm length, 6 degree rise, 25.4mm clamp diameter
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Grips: Jett Body Geometry, 19mm Internal Diameter, lock-on
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Saddle: Bridge Kids Saddle, 130mm
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Seatpost: Alloy, 2-bolt, 14mm offset, 27.2mm, 280mm length
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Seat Binder: Bolt-type, 31.8mm
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