Product Info
Details + Specs
Riprock Coaster 20
Built to make riding fun
Traction, control, confidence, and fun — the Riprock Coaster 20 is the perfect bike for your kid to start hitting the trails with, and its simple coaster-brake design means safety and fun aren't mutually exclusive. Big 20x2.
Best for: Young riders building confidence, bike-handling skills and a love of riding.
At a glance
Frame
Specialized A1 Premium Aluminium, ultra-low standover geometry
Fork
Hi-Ten steel, rigid
Weight
approx. 10.6kg (23lb 6oz)
Wheels
20" alloy rims, 16mm depth
Brakes
Rear steel coaster brake; front V-brake with tool-less reach adjust…
Drivetrain
Single-speed, 36T chainring / 18T rear cog, KMC Z510 chain
Key highlights
a simple rear coaster brake, backed by a front V-brake, removes hand-lever complexity so young riders can stop safely and predictably.
makes it easy for little ones to get on, off, and confidently put a foot down.
20x2. 3" tyres soak up bumps and deliver serious traction on trails, footpaths, and city streets.
built tough for daily kid-sized adventures without adding unnecessary weight.
Complete specification
Full build details
Components are grouped by bike system so the complete build is easy to scan.
Frameset
Frame
Specialized A1 Premium Aluminium, ultra-low standover geometry
Suspension
Fork
Hi-Ten steel, rigid
Brakes
Brakes
Rear steel coaster brake; front V-brake with tool-less reach adjust lever
Wheels and tyres
Wheels
20" alloy rims, 16mm depth
Tyres
Rhythm Lite, 20x2.3", 30 TPI, wire bead (front and rear)
Cockpit and contact points
Saddle
Specialized Kids' Henge
Accessories and storage
Pedals
Nylon platform pedals with reflectors
Weight and sizing
Weight
approx. 10.6kg (23lb 6oz)
Other build details
Drivetrain
Single-speed, 36T chainring / 18T rear cog, KMC Z510 chain
Recommended Rider Height
approx. 3'6"–4'4" (roughly ages 5–8)
Weight is based on a production painted bike in the stated reference size. Actual weight can vary with colour, size and component variation. Specifications are subject to change without notice.
Frequently bought with