KMC Z510, single-speed, anti-drop, 1/2"x1/8"

Bolt-on, 95mm spacing, loose ball bearings, 16h

BMX, steel, 10-degree backsweep, 4-degree upsweep, 65mm rise, 470mm width, 22.2mm

Coaster brake, bolt-on, loose ball bearings, 110mm spacing, 16T cog, 16h

12" alloy, 16mm depth, 21mm internal width

Die Cast Aluminum, 35mm length, 22.2 clamp diameter

Front: Rhythm Lite, 30 TPI, wire bead, 12x2.3", Rear: Rhythm Lite, 30 TPI, wire bead, 12x2.3"

With our Riprock Coaster 12, riding gets boiled down to its simplest element—fun. And to make sure of it, we designed the bike with tons of cool features that are easy for your little ones to use, like a coaster brake for simple stopping, wide 12x2.3" tires that increase stability and confidence, and tough components that will stand up to years of abuse. It's the perfect bike for your little ripper to start getting out on the trail with—we just wish that we had one when we were kids.

Specialized Riprock Coaster 12

The Specialized Riprock is a well-designed youth mountain bike that excels in lightweight construction, modern geometry, and kid-specific components, making it an excellent choice for young trail riders. Its slacker geometry, reduced chainstay lengths, and dropped stack heights improve handling and comfort, while the inclusion of hydraulic disc brakes and wide-range cassettes enhances performance. However, some models feature rigid forks, which may limit suspension performance for more aggressive trails.

MSRP	($404)
Where to Buy	— $1 At
Category	General Youth

Frame	Aluminum
	Steel
Wheels	Aluminum
Wheel Size	12″
	Coaster



Drivetrain
Brand Site	specialized.com
Summary	The Specialized Riprock Coaster 12 is a 12″ aluminum frame general youth bike with coaster brakes.

Frame	Specialized A1 Premium Aluminum
Fork	Hi-Ten steel
Bottom Bracket	Steel, loose ball bearings
Stem	Die Cast Aluminum, 35mm length, 22.2 clamp diameter
Handlebar	BMX, steel, 10-degree backsweep, 4-degree upsweep, 65mm rise, 470mm width, 22.2mm
Saddle	Specialized Kids'
Seatpost	Steel, 22.2mm Type: Rigid
Pedals	Nylon platform w/ reflectors
Grips	Specialized, slip-on

Crank	Hi-Ten steel, 76mm, Steel, 26T
Chain	KMC Z510, single-speed, anti-drop, 1/2"x1/8"
Brakes	Coaster Type: Coaster

Rims	12" alloy, 16mm depth, 21mm internal width
Spokes	Stainless, 14g
Front Hub	Bolt-on, 95mm spacing, loose ball bearings, 16h
Rear Hub	Coaster brake, bolt-on, loose ball bearings, 110mm spacing, 16T cog, 16h
Tires	Front: Rhythm Lite, 30 TPI, wire bead, 12x2.3", Rear: Rhythm Lite, 30 TPI, wire bead, 12x2.3"