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Delivered ready to ride in 10 to 14 days.

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Select the product you are interested in, click delivery, type in your postcode, and select Bike Delivery. If this is not available there is no available stock nearby.

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Once your order is placed we will be in contact with you within 2 hours to confirm your order.

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Your bike will be built up at your local 99 bikes by one of our expert mechanics and safety checked prior to delivery.

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Next Business Day Delivery

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Delivered before 8pm next business day.

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Shipping & Delivery Options

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At 99 Bikes, we offer multiple delivery options to suit your needs. Here’s a quick overview:

Click & Collect:
Order online and pick up your item from a nearby store — free and often same-day!

Standard Delivery:
Available for most parts and accessories.
Estimated delivery:

  • Metro: 2–14 business days
  • Regional & Remote: Up to 21 business days

Express Delivery:
Available for most parts and accessories.
Estimated delivery:

  • Metro: 1–6 business days
  • Regional & Remote: Up to 21 business days

Boxed Bike Delivery:
For selected bikes. Delivered boxed to your address and ready to be assembled in 1 - 2 weeks.

Note: Delivery times are an estimate and actual delivery times may vary based on public holidays and peak periods. Bulky items may take longer.
For full details, delivery estimates and more information, please visit our Shipping & Delivery Info page.

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Mongoose Rockadile 20" Kids Bike Teal

Out of stock
Only %1 left
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Up to 12 months interest free

Features

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 comes 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 Rockadile 20" Kids Bike is the perfect companion for young riders eager to explore trails and parks. Its lightweight alloy frame with a sport geometry design ensures easy handling, while the 60mm suspension fork smooths out bumps for a comfortable ride. Equipped with a Microshift 7-speed drivetrain and reliable linear pull brakes, this bike delivers both versatility and safety. Durable double-wall rims and 20" tires provide excellent traction and stability, making the Rockadile 20" ideal for budding adventurers.

Mongoose Rockadile 20" Kids Bike

  • Lightweight alloy frame with internal cable routing
  • 20" wheels with durable double-wall rims
  • 60mm suspension fork for smoother rides
  • Microshift 7-speed drivetrain for easy shifting
  • Linear pull brakes ensure reliable stopping power

Trail-Ready Frame Design

The Tectonic T1 alloy frame combines lightweight durability with a sporty geometry, offering easy maneuverability for young riders. Internal cable routing adds a sleek and modern look.

Smooth and Controlled Rides

With a 60mm suspension fork and reliable linear pull brakes, the Mongoose Rockadile 20" provides enhanced comfort and control on various terrains. Young riders can confidently tackle bumps and descents.

Versatile and Reliable Components

The Microshift 7-speed drivetrain ensures smooth and precise gear changes for tackling inclines and flat trails. Durable double-wall rims and 20" tires deliver stability and long-lasting performance.

What is the Mongoose Rockadile 20" used for?

The Mongoose Rockadile 20" is used for exploring trails, parks, and neighborhood streets, providing a comfortable and capable ride for young adventurers.

Why choose the Mongoose Rockadile 20"?

Choose the Mongoose Rockadile 20" for its lightweight frame, smooth suspension, reliable brakes, and easy-to-use 7-speed drivetrain, all designed to enhance your child’s riding experience.

Who is the Mongoose Rockadile 20" designed for?

The Mongoose Rockadile 20" is designed for kids aged 6-10 who want a durable, easy-to-handle bike for recreational rides and light trail adventures.

More Information
SKU Mongoose25RockadileTeal
Season 2025
Sizing SKUs 20inch - G: MGM51253F20OS
Click & Collect Yes
Frame Tectonic T1, aluminium, 20” sport geometry, internal cable routing, 9 mm x 135 mm dropout, replaceable hanger
Frame Material Alloy
Fork Xposure, 20”, steel steerer, lockout, 9 mm x 100 mm, QR, 60 mm travel
Front Travel under 100mm
Speeds 1 x 7
Front Gears Single
Groupset Brand MICROshift
Rear Gears 7 Speed
Crankset Xposure, forged steel, 32T
Pedals Mongoose, nylon
Chain KMC Z7
Brake Type Rim Brake
Brakes Radius, linear pull, aluminium
Shifters Microshift
Brake Levers Alloy
Derailleur Rear Microshift
Cassette Sunrace, 7-speed, 14-28T
Wheel Size 20"
Tyres Mongoose, 20 in x 2.0 in, wire bead
Rims Xposure, aluminium double wall, 23 mm ID, 32H
Hubs Xposure, aluminium, ball bearing, 3/8 mm x 135 mm, 32H, 6-bolt
Spokes 14G, stainless steel
Bottom Bracket Feimin FP-B609W, cartridge, 3-piece, threaded 68 mm shell
Handlebar Mongoose, aluminium, 600 mm width, 30 mm rise, 25.4 mm clamp
Headset Threadless, ZS44/ZS44, retainer bearing
Grips Mongoose, single density
Stem Xposure diecast, threadless, 60 mm, 7°, 25.4 mm clamp
Saddle Mongoose MTB comfort, steel rails
Seatpost Xposure, aluminum, 300 mm, 27.2 mm

Mongoose Kids Bike Sizing Chart

Rider's Height (cm)
75
85
95
105
115
125
135
145
155
165
175
12" Wheel
16" Wheel
20" Wheel
24" Wheel
26" Wheel

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.

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