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Trek Precaliber 12

The Precaliber 12 is the perfect first bike for little riders who are ahead of the curve and ready for two wheels at a younger age than most. It features an integrated handle built directly into the saddle so you can comfortably guide your child while they pedal, alongside tool-free training wheels that are super easy to install and remove when they are ready to balance on two wheels.

This model is a perfect fit for kids aged 3–4, between 91cm and 102cm (36"–40") tall.

Specifications

Frameset & Ergonomics

• Frame: Alpha Silver Aluminium, 12" kids' specific geometry, low standover height.

• Fork: High-tensile steel, 12", threadless 1" steerer tube.

Drivetrain & Braking

• Crankset: Alloy arms, 70mm short reach length, paired with a 24T steel chainring and a fully enclosed chain guard.

• Bottom Bracket: Square taper spindle, 68mm shell, sealed cartridge bearings.

• Cassette/Cog: 16T single-speed cog.

• Chain: HV410, heavy-duty 1/2" x 1/8".

• Pedals: Kids' Satellite, standard 9/16" pedal thread.

• Brakes: Traditional intuitive rear coaster brake (pedal backward to stop).

• Max Chainring Limit: 1x: 30T

Wheels & Tyres

• Rims: 12" 20-hole lightweight alloy, Schrader valve interface.

• Front Hub: High-durability steel, 84mm bolt-on axle.

• Rear Hub: Coaster brake integrated hub, 120mm bolt-on axle.

• Tyres: Bontrager XR1 multi-surface kids' tyres, wire bead, 27 tpi casing, 12" x 2.25" width.

• Max Tyre Clearance: 12" x 2.25"

Cockpit & Components

• Saddle: Kids' dedicated comfort padded saddle with an integrated rear parent-guide handle and integrated seatpost.

• Handlebar: Kids' steel high-riser bar, 25.4mm clamp zone, 80mm rise, 500mm total width.

• Stem: Bontrager Approved alloy stem, 25.4mm clamp, 15-degree rise, 50mm extension length.

• Grips: Kids'-specific comfort grips, 107mm width.

• Headset: Adjustable ball-bearing configuration.

Included Accessories

• Training Wheels: Trek Adjustable tool-free training wheels (fits 12"–16" frames), engineered for effortless removal and attachment.

Weight & Load Performance

• Total Bike Weight: 6.84 kg / 15.08 lbs

• Weight Limit: Maximum total weight safety limit of 23 kg / 50 lbs (combined weight of bicycle, young rider, and cargo)

Please Note: We make every effort to ensure the accuracy of the specification information, but components are subject to change by the manufacturer at any time without notice.