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 has a handle built into the saddle so you can guide them as they ride, and tool-free training wheels that are super easy to install and remove. Its a great fit for kids ages 3-4, between 36-40˝ tall.
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- This bike is a memory-maker: seeing your child ride their bike for the first time is something youll never forget
- This bike is hand-me-down heaven: its built to last, so younger siblings can inherit this bike and itll still feel like new
- Investing in a kids bike from an established bike brand is worth it—Trek kids bikes are designed and assembled by people who know bikes
- Like all Precaliber bikes, the frame is lower so its easier for kids to stand over and hop on and off
Integrated handle
Hidden handle under the saddle helps you guide your child while they learn to ride.
Toolless training wheels
When your little one is ready to ditch the training wheels, the only tools youll need are your hands.
Upgrade your pedals and love your bike more
Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. See the pedal guide and find the best pedals for your riding style. We recommend flat pedals for simple versatility.
| Frame | Alpha Silver Aluminum, 12 kids frame size |
| Fork | Steel, 12, threadless 1 steerer |
| Wheel Front | / |
| Tire | Bontrager XR1, wire bead, 27 tpi., 12x2.25 |
| Hub Rear | Steel, 84mm bolt-on // Coaster brake, 16T, 120mm bolt-on |
| Rim | Alloy 12, 20-hole, schrader valve |
| Crank | Alloy, 24T steel ring, chainguard, 70mm length |
| Bottom Bracket | Square taper, 68mm, sealed cartridge |
| Chain | HV410, 1/2x1/8 |
| Pedal | Kids Satellite, 9/16 thread |
| Saddle | Kids padded, integrated seatpost, with handle |
| Handlebar | Kids steel, 25.4mm clamp, 80mm rise, 500mm width |
| Stem | Bontrager Approved alloy, 25.4mm clamp, 15 degree rise, 50mm |
| Headset | Adjustable ball bearing |
| Grips | Kids grip, 107mm width |
Geometry Chart
| B B Drop | 0.5 |
| B B Height | 16.2 |
| Chainstay Length | 24.3 |
| Eff Top Tube | 36.5 |
| Frame Reach | 26 |
| Frame Size Number | 12 |
| Frame Stack | 44.1 |
| Head Angle | 70.0° |
| Head Tube Length | 8 |
| Offset | 2.5 |
| Seat Tube | 17.5 |
| Seat Tube Angle | 69.5° |
| Standover | 34.3 |
| Trail | 3.4 |
| Wheelbase | 62.9 |
| Wheel Size | 12" kids |
