Specialized Riprock Coaster 20 Bicycle - Lime

Specialized Riprock Coaster 20 Bicycle – The Perfect Junior MTB to Start Trail Riding

The Specialized Riprock Coaster 20 is the ideal bike for young riders taking their first steps into the world of off-road cycling. Designed to offer maximum stability, control, and fun, it combines a sturdy frame with simple and reliable components, perfect for learning safely.

Thanks to the single-speed drivetrain and the practical coaster brake, this bike is intuitive and easy to use, while the wide tires ensure traction and safety on any terrain.

Main Features

• Lightweight A1 Premium Aluminum Alloy Frame: durable and easy to handle, with low standover geometry for added safety
• Coaster Brake: simple and immediate, ideal for younger riders
• Single-speed Drivetrain: less maintenance and maximum ease of use
• Wide 20x2.3" Rhythm Lite Tires: excellent grip and control on dirt and pavement
• Child-specific Geometry: stability and comfort in every situation

Technical Specifications

Frame

• Frame: Specialized A1 Premium aluminum
• Fork: Hi-Ten steel
• Seatpost Clamp: Bolt-on, 28.6 mm

Brakes

• Front Brake: Linear-pull V-brake
• Rear Brake: V-brake with tool-free adjustable lever

Drivetrain

• Bottom Bracket: Feimin FP-B701, 68 mm
• Crankset: Hi-Ten steel, 114 mm
• Chain: KMC Z510, single-speed, anti-drop, 1/2"x1/8"
• Sprocket: Steel, 36 teeth

Wheels

• Rims: 20" aluminum, 16 mm depth, 21 mm internal width
• Front Hub: Steel, bolt-on, 100 mm spacing, loose ball bearings, 36 holes
• Rear Hub: Coaster brake, bolt-on, 110 mm spacing, 18-tooth cog, 36 holes
• Front Tire: Rhythm Lite, 30 TPI, stiff bead, 20x2.3"
• Rear Tire: Rhythm Lite, 30 TPI, stiff bead, 20x2.3"
• Inner Tubes: Schrader valve
• Spokes: Stainless steel, 14g

Cockpit

• Handlebar: BMX style steel, 10° backsweep, 4° upsweep, 130 mm rise, 560 mm width, 22.2 mm diameter
• Stem: Die-cast aluminum, 37 mm length, 10° angle, 22.2 mm diameter
• Saddle: Specialized Kids' Henge
• Grips: Specialized slip-on
• Seatpost: Steel, 25.4 mm

Accessories

• Pedals: Nylon platform with reflectors

Weight

• Weight: 10.6 kg
• Size: One size

Note

Technical specifications may change without notice depending on component availability.
Product images are for illustrative purposes only and may not exactly reflect the described features.

The Specialized Riprock Coaster 20 is the perfect bike to accompany young riders on their first two-wheel adventures. Thanks to the combination of simplicity, stability, and durability, it helps build confidence and security, making every ride a fun and educational experience.

Do you want to receive your bike ready for use? Don't forget to add the bike assembly service at the time of purchase! Discover all the details here: Francesconi bike assembly

A Complete Guide to Bike Sizes

Foreword: Not all bike sizes are the same

Each type of bike has a specific frame and often uses a different size scale. For example, a road bike with a 54cm frame might be considered a medium size by one brand, but a large by another.

Bicycle adjustment margins

Some types of bikes, like gravel bikes, offer a wide range of adjustments, adapting to different body types. Other models, however, have limitations in this regard. This is an important aspect to consider.

How to use size charts

We've created a simple guide to help you find the right bike size:

1. Check out our size charts for each bike type.
2. Learn more with specific tips to help you make the right choice.

Size Charts: Find Your Perfect Bike

Gravel and road bikes

Sizes are based on the length of the top tube (in cm), which determines the reach of the bike.

For gravel, measurements may vary slightly due to different geometries, but remain similar.

Mountain bike

MTBs are measured in inches, based on the seat tube.

Sizes also vary depending on the type of MTB: full-suspension , hardtail or fat bike .

Children's bikes

The size depends on the size of the wheels, often associated with age:

What to do with half measures?

If you are between two sizes:

• Comfort : Choose the larger size.
• Performance : Go for the smaller size.

Final tips for choosing

1. Consult the manufacturer's instructions : Always check the brand's guidelines.
2. Ask an expert : a specialized workshop can help you choose based on your height, ideal reach and goals.
3. Test the bike : If possible, test the model you intend to purchase.