Specialized Riprock Coaster 20

Name: Specialized Riprock Coaster 20
Brand: Specialized

2021 YouthGeneral youth Manufacturer page

Specialized Riprock Coaster 20, color Turquoise / Hyper Green / Light Turquoise

Suspension: Rigid
Wheels: 20″
Frame: Aluminum
Brakes: Coaster brake

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

3 of 17 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Specialized A1 Premium Aluminum Not identified

Suspension

1 part

Fork

Hi-Ten steel Not identified

Drivetrain

3 parts

Bottom bracket

Steel, loose ball bearings Not identified
Chain
- KMC
Crankset

Hi-Ten steel, 114mm, Steel, 36T Not identified

Brakes

1 part

Brakes

Coaster Not identified

Wheels and tires

5 parts

Front hub

Steel, bolt-on, 100mm spacing, loose ball bearings, 36h Not identified
Rear hub

Coaster brake, bolt-on, loose ball bearings, 110mm spacing, 18T cog, 36h Not identified
Rims

20" alloy, 16mm depth, 21mm internal width Not identified
Spokes

Stainless, 14g Not identified
Tires

Front: Rhythm Lite, 30 TPI, wire bead, 20x2.3", Rear: Rhythm Lite, 30 TPI, wire bead, 20x2.3" Not identified

Cockpit and contact points

6 parts

Grips
- Specialized
Handlebar

BMX, steel, 10-degree backsweep, 4-degree upsweep, 130mm rise, 560mm width, 22.2mm Not identified
Pedals

Nylon platform w/ reflectors Not identified
Saddle
- Specialized
Seatpost

Steel, 25.4mm Not identified
Stem

Die Cast Aluminum, 37mm length, 10 degree, 22.2 clamp diameter Not identified

Sizes and geometry

1 size Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 20"

Table

Reach 315mm

Stack 413mm

Wheelbase 858mm

Head angle 70.0°

Seat angle 72.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 20″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	315
Stackmm	413
Top tube lengthmm	449
Seat tube lengthmm	250
Head tube lengthmm	80
Head tube angle	70°
Seat tube angle	72°
Chainstay lengthmm	386
Wheelbasemm	858
Front centermm	476
Bottom bracket dropmm	42
Standover heightmm	477
Fork rakemm	23
Trailmm	71
Stack/reach ratio	1.31
Suspension and parts
Crank lengthmm	114
Handlebar widthmm	560
Stem lengthmm	37
Seatpost lengthmm	220

Not published by the manufacturer: Bottom bracket height, Front travel, Rear travel, Stem angle and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Steel

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 36
Largest chainring: 36

Wheels and brakes

Wheel configuration: Same size
Brake type: Coaster brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2.3″
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 20″

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2021 builds
Specification	This bicycle Specialized Riprock Coaster 20	Specialized Riprock 16 Coaster	Specialized Riprock 20	Specialized Riprock 20 Coaster	Specialized Riprock 24	Specialized Riprock Coaster 12
Frame
Frame material	Aluminum	Not informed	Aluminum	Not informed	Aluminum	Aluminum
Fork material	Steel	Not informed	Not informed	Not informed	Not informed	Steel
Drivetrain
Front chainrings	1	Not informed	1	Not informed	1	1
Smallest chainring	36	Not informed	30	Not informed	30	26
Largest chainring	36	Not informed	30	Not informed	30	26
Rear sprockets	Not informed	Not informed	7	Not informed	8	Not informed
Smallest sprocket	Not informed	Not informed	11	Not informed	11	Not informed
Largest sprocket	Not informed	Not informed	34	Not informed	34	Not informed
Lowest gear	Not informed	Not informed	17.7 in	Not informed	21.2 in	Not informed
Highest gear	Not informed	Not informed	54.6 in	Not informed	65.5 in	Not informed
Brakes
Brake type	Coaster brake	Coaster brake	Mechanical disc	Coaster brake	Mechanical disc	Coaster brake
Cockpit
Seatpost	Rigid seatpost	Not informed	Rigid seatpost	Not informed	Rigid seatpost	Rigid seatpost
Other specifications
Tire width	2.3″	Not informed	2.8″	Not informed	2.8″	2.3″
Wheel material	Aluminum	Not informed	Aluminum	Not informed	Aluminum	Aluminum
Wheel size	20″	16″	20″	20″	24″	12″
Fork spring	Not informed	Not informed	Coil	Not informed	Coil	Not informed