Use my current location Mongoose LilGoose 12" Kids Bike Green/Black
Up to 12 months interest free
Perfect Ride Guarantee
If you don't love it, you can swap it, up to 30 days from purchase!* Learn more »
Free Bike Build
We'll build your bike for free when you click and collect at any 99 Bikes store.
First Free Tune-up
Every bike come with a complimentary free tune-up and safety check.
Please note that, in order to reduce production and delivery times, bike specifications are subject to change by the manufacturer without notice. Please be aware that these changes might not be reflected on product pages and images.
The Mongoose LilGoose 12" Kids Bike is the perfect introduction to cycling for young riders. Built with a lightweight Tectonic T1 aluminum frame, it offers a smooth and manageable ride for toddlers and preschoolers. This bike features a reliable aluminum caliper front brake and a rear steel coaster brake, ensuring safety while learning. With a single-speed design, kids can focus on enjoying their ride without the complexity of gears. The LilGoose’s vibrant colors and playful graphics make it an exciting choice for little adventurers.
Mongoose LilGoose 12" Kids Bike
- Lightweight alloy frame for easy handling
- Safe aluminum caliper and coaster brakes
- Single-speed design for simple operation
- Kid-friendly geometry for better balance
- Bright colors to attract young riders
Designed for Young Riders
The Mongoose LilGoose 12" is specifically designed with kids' geometry in mind, promoting comfort and confidence. This bike helps young riders maintain better balance and control as they develop their cycling skills.
Reliable Stopping Power
Equipped with an aluminum caliper front brake and a rear coaster brake, the LilGoose offers reliable stopping capabilities. Parents can feel at ease knowing their children can stop quickly and safely.
Engaging and Fun Design
The colorful design and playful graphics of the Mongoose LilGoose 12" capture the attention of young cyclists. Its vibrant aesthetics inspire kids to get outside and enjoy the thrill of riding.
What is the Mongoose LilGoose 12" used for?
The Mongoose LilGoose 12" is used for introducing young children to cycling, making it ideal for fun rides in the park and around the neighborhood.
Why choose the Mongoose LilGoose 12"?
Choose the Mongoose LilGoose 12" for its lightweight frame, safe braking system, and kid-friendly design, which make it perfect for young beginners learning to ride. Its eye-catching colors also enhance the biking experience.
Who is the Mongoose LilGoose 12" designed for?
The Mongoose LilGoose 12" is designed for young children, typically aged 2 to 4 years, who are just starting to explore the world of biking. It’s an excellent choice for little ones eager to learn and enjoy riding independently.
| SKU | Mongoose25LilGooseGreen/Black |
|---|---|
| Season | 2025 |
| Sizing SKUs | 12inch: MGM55303M20OS |
| Click & Collect | Yes |
| Colour | Green |
| Frame | Tectonic T1, aluminium, 12" kids geometry, 100 mm dropout |
| Frame Material | Alloy |
| Fork | Mongoose, 12”, steel steerer, 100 mm, bolt-on |
| Fork Material | Steel |
| Rear Gears | Single Speed |
| Crankset | 1-piece forged steel 89 mm, 24T steel chainring |
| Pedals | Kids, plastic |
| Chain | KMC Z410 |
| Brakes | Aluminum caliper front, rear steel coaster brake |
| Cassette | Single-speed, 16T |
| Tyres | Mongoose, 12 in x 2.125 in, wire bead |
| Rims | Aluminum single wall, 16H |
| Hubs | Steel, 3/8 in axle, 16H |
| Spokes | 14G, stainless steel |
| Bottom Bracket | Internal, 1-piece, American, 68 mm shell |
| Handlebar | 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 |
| Saddle | Mongoose Kids, integrated rails |
| Seatpost | Aluminum, integrated saddle, 25.4 mm |
Mongoose Kids Bike Sizing Chart
This is an accurate estimate, and every new bike comes with a free professional bike fit when you click & collect in store, plus all bikes have a 30 day Perfect Ride Guarantee.