Precaliber 20 Coaster Brake will have your little rider begging to go out for a pedal on their first real big kid bike. It's a great transition model from training wheels. It has one speed, a coaster brake, and a saddle with an integrated handle that can be swapped out for a light mount. For kids ages 6-8, between 45-52˝ tall.

Help them gain confidence

A hidden handle under the saddle helps you guide your child along while they gain confidence and learn to ride on two wheels.

Smaller grips for little hands

Smaller diameter grips make it easy for little hands to stay in control and navigate their next turn.

Linear pull brakes

Alloy linear pull brakes allow for quick adjustments and reliable stops.

Lightweight aluminum frame

All Trek kids' bikes are built with lightweight and easy-to-maneuver aluminum frames that are durable enough for whatever adventures lie ahead.

Reliable coaster brake

Coaster brakes engage when pedaling backward to help new riders learn how to stop intuitively.

Frame	Alpha Silver Aluminum, 20'' kids' frame size
Fork	Kid's steel fork
Tire	Bontrager XR1, wire bead, 27 tpi., 20x2.25''
Hub Front	Steel, 100mm, nutted axle
Hub Rear	Coaster brake, 19T, 120mm bolt-on
Rim	Alloy 20'', 32-hole, schrader valve
Crank	ProWheel alloy, 32T steel ring w/double guard, 127mm length
Bottom Bracket	Square taper, 68mm, sealed cartridge
Chain	HV410, 1/2x1/8
Brake	Alloy linear-pull
Brake Lever	Kids', alloy
Pedal	Kids' Satellite, 9/16 thread
Saddle	Kids' padded, integrated seatpost, with handle
Handlebar	Kids' steel, 25.4mm clamp, 40mm rise, 560mm width
Stem	Bontrager Approved alloy, 25.4mm clamp, 15 degree rise, 60mm
Headset	Adjustable ball bearing, threadless
Grips	Kids' grip, 107mm width

Geometry Chart

B B Drop	3
B B Height	23.8
Chainstay Length	37.2
Eff Top Tube	44.5
Frame Reach	31.2
Frame Size Number	20
Frame Stack	40.6
Head Angle	70.0°
Head Tube Length	8.5
Offset	4.2
Seat Tube	25.5
Seat Tube Angle	72.0°
Standover	47.6
Trail	5.3
Wheelbase	86.5
Wheel Size	20" kids'

Size

20" WHEEL