Riprock Coaster 20
Shipping & Delivery
Built, tuned and handed over by our mechanics. Allow 48 hours if it is still boxed.
Built, delivered and set up at your door.
Boxed and part-assembled — we recommend a shop finishes the build. Not WA or NT.
Send us your address and we will price the freight.
Order-ins are placed the day you buy. We will email tracking as soon as it is on its way.
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 2.
Best for: Young riders building confidence, bike-handling skills and a love of riding.
At a glance
Frame
Specialized A1 Premium Aluminum, ultra-low standover geometry
Fork
Hi-Ten steel
Brakes
Rear steel coaster brake; front V-brake with tool-less reach adjust…
Drivetrain
Single-speed, KMC Z510 chain (anti-drop, 1/2"x1/8"), 18T rear cog
Crankset
Steel, 114mm, 36T steel chainring
Wheels
20" alloy rims, 16mm depth, 21mm internal width, 36h, stainless spokes
Key highlights
Lightweight and built to withstand tough use, with geometry that makes it easy for kids to fit on and grow with.
An easy-to-learn rear coaster brake is backed up by a tool-less reach-adjust front V-brake lever for confident, controlled stopping.
Extra volume and tread deliver exceptional traction, comfort, and stability across varied terrain.
Fits riders roughly 3'6"–4'4" tall, so it grows with your child through their early trail years.
Complete specification
Full build details
Components are grouped by bike system so the complete build is easy to scan.
Frameset
Frame
Specialized A1 Premium Aluminum, ultra-low standover geometry
Suspension
Fork
Hi-Ten steel
Brakes
Brakes
Rear steel coaster brake; front V-brake with tool-less reach adjust lever
Drivetrain
Crankset
Steel, 114mm, 36T steel chainring
Wheels and tyres
Wheels
20" alloy rims, 16mm depth, 21mm internal width, 36h, stainless spokes
Tyres
Rhythm Lite, 30 TPI, wire bead, 20x2.3" (front and rear)
Cockpit and contact points
Handlebars
BMX steel, 130mm rise, 560mm width
Seatpost
Steel, 25.4mm
Saddle
Specialized Kids' Henge
Other build details
Drivetrain
Single-speed, KMC Z510 chain (anti-drop, 1/2"x1/8"), 18T rear cog
Recommended Age/Height
approx. 5–8 years, riders approx. 3'6"–4'4"
Component specifications are subject to change without notice.
Frequently bought with
