Mongoose LilGoose 12'' Kids Bike Red

Name: Mongoose LilGoose 12'' Kids Bike Red
Brand: Mongoose
SKU: J1QO5F8O
Price: 349.00 NZD
Availability: InStock

Brand: Mongoose

SKU: J1QO5F8O

$349.00 Full price

$349.00

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$399.00 Full price

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Alloy Frame/ Steel Fork

12" Wheel Size

Coaster w/ Front V-Brake

1 x 1 Speed

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Product Details

Description

The Mongoose LilGoose 12" Kids Bike Red is a kids bike built for confident starts, helping little riders learn balance, pedalling and basic control in a fun, low-stress way. It features a Tectonic T1 aluminium frame and a sturdy steel fork, with reliable brakes including a rear coaster brake and a front calliper for added stopping power. With a simple single-speed setup and kids-focused components, it is ideal for short rides around the neighbourhood, park play, and steady practice sessions as skills grow. If you are looking for a kids bike that feels solid, handles well at slower speeds, and is made for first adventures, this Mongoose kids bike is a great match.

Key Features

Alloy frame with 12-inch kids geometry
Steel fork for smooth everyday rides
Coaster rear brake plus front calliper
Single-speed drivetrain for easy learning

Specifications

Product Overview

Product

Mongoose LilGoose 12'' Kids Bike Red

Brand

Mongoose

Supplier SKU

MGM55303M10OS

Year Model

2026

Product Features

Frame Material

Alloy

Frame Style

Crossbar

Colour

Red

Wheel Size

12"

Brake Type

Coaster w/ Front V-Brake

Gears

1 x 1

Fork Material

Steel

Pedals Included

true

Build

Frame

Tectonic T1, Aluminium, 12" Kids geometry, 100 mm dropout

Fork

Mongoose, 12", Steel Steerer, 100 mm, bolt-on

Handlebars

Mongoose, Hi-Ten Steel, 500 mm width, 130 mm rise, 22.2 mm clamp

Headset

Threaded, EC22.2/27, retainer bearing

Grips

Mongoose, Kids

Stem

Aluminum/Steel, Quill, 30 mm ext., 22.2 mm clamp

Bottom Bracket

Internal, 1-Piece, American, 68 mm shell

Pedals

Kids, Plastic

Saddle

Mongoose Kids, Integrated Rails

Seat Post

Aluminum, Integrated Saddle, 25.4 mm

Wheels

Wheel Size

12"

Rims

Aluminum Single Wall, 16H

Hubs

Steel, 3/8 In Axle, 16H

Tyres

Mongoose, 12 in x 2.125 in, Wire bead

Groupset

Crankset

1-Piece Forged Steel 89 mm, 24T Steel chainring

Chain

KMC Z410

Brakes

F: Aluminum Caliper / R: Steel Coaster Brake

Cassette

Single Speed

Cassette Model

Single-Speed, 16T

Frequently Asked Questions

What is the Mongoose LilGoose 12'' Kids Bike used for?

The Mongoose LilGoose 12" Kids Bike Red is used for helping kids ride confidently on everyday surfaces like footpaths, driveways and local park paths, while building basic biking skills through simple, predictable handling.

Why choose the Mongoose LilGoose 12'' Kids Bike?

Choose the Mongoose LilGoose 12" Kids Bike Red for its sturdy alloy frame, responsive braking setup (coaster rear with front calliper), and a simple single-speed ride that is easier for kids to master.

Who is the Mongoose LilGoose 12'' Kids Bike designed for?

The Mongoose LilGoose 12" Kids Bike Red is designed for young riders who are ready for their first kids bike experiences and want a dependable bike that supports learning and growing comfort as they ride.

Find Your Size

Step 1: Measure your height

Take off your shoes
Stand with your back straight against a wall
Balance a book on your head to mark your height on the wall
Measure your height by the distance from the floor to the mark

Your height:

Find Your Size

Step 2: Adjust your inseam

Based on your height, we’ve calculated a starting point.
You can measure your inseam by tucking a book between your legs so there is pressure but it isn’t uncomfortable.
Inseam typically falls with 5cm of the average.

Your inseam: