Velopedia Bicycle Archive

Compare Bicycles

Compare published geometry, gearing and specifications for up to three bicycles.

1 of 2 bicycles

At a glance

Key differences

Supported differences are shown below. Data limitations are labeled separately.

  1. Data limitation

    Only 2019 Specialized Riprock Coaster 20 has enough published drivetrain data for gearing calculations.

  2. Identity & price

    2019 Specialized Riprock Coaster 20 had an original MSRP $130 lower than 2023 Specialized Riprock Coaster 20.

    Original MSRP is the published list price when new, not today’s used-bike value.

Selected-size geometry

Geometry overlay

Frames share one scale and a bottom-bracket alignment. Size labels differ by brand; schematic drawing aids are identified below.

Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.
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Specification
2019 Specialized Riprock Coaster 20
2023 Specialized Riprock Coaster 20
Overview
Model Year
2019
2023
Brand
Specialized
Specialized
Model
Riprock Coaster 20
Riprock Coaster 20
Bicycle Type
Youth
Youth
Original MSRP
$270.00
$399.99
Colors
Monster Green/Nordic Red/Black, Rainbow Flake Pink/Deep Fuchsia/Metallic White Silver, Royal Blue/Moto Orange/White, Satin Sterling Grayl/Nordic Red/Hyper Green, Turquoise/Hyper Green/Light Turquoise
Satin Fiery Red / Dark Navy, Gloss Limestone / Purple Haze, Satin Deep Marine / Fiery Red, Gloss Dune White / White Sage
Sizes
—
20
Weight
—
10.6kg (23 lb, 5.9 oz)
Frameset
Frame Construction
Specialized A1 Premium Aluminum
Specialized A1 Premium Aluminum
Frame Material
Aluminum
Aluminum
Fork
Hi-Ten, 1-1/8" steerer
Hi-Ten steel
Fork Material
—
Steel
Drivetrain
Crankset
Hi-Ten steel, 114mm; chainrings: 36T
Hi-Ten steel, 114mm; chainrings: Steel, 36T
Bottom Bracket
Steel, loose ball bearings
Feimin FP-B701, 68MM
BB Shell Width
—
68 mm
Cassette
18T cog
—
Chain
KMC Z510, single-speed, anti-drop, 1/2"x1/8"
KMC Z510, single-speed, anti-drop, 1/2"x1/8"
Pedals
Nylon platform w/ reflectors
Nylon platform w/ reflectors
Brakes
Brakes
(R) V-brake w/ tool-less reach adjust brake lever
(R) V-brake w/ tool-less reach adjust brake lever
Cockpit & Contact Points
Handlebar
BMX, steel, 10-degree backsweep, 4-degree upsweep, 130mm rise, 560mm width, 22.2mm
BMX, steel, 10-degree backsweep, 4-degree upsweep, 130mm rise, 560mm width, 22.2mm
Stem
—
Die Cast Aluminum, 37mm length, 10 degree, 22.2 clamp diameter
Saddle
Specialized Kids' Henge
Specialized Kids' Henge
Seatpost
Steel, 25.4mm
Steel, 25.4mm
Wheels & Tires
Hubs
(F) Steel, bolt-on, 100mm spacing, loose ball bearings, 36h / (R) Coaster brake, bolt-on, loose ball bearings, 110mm spacing, 18T cog, 36h
(F) Steel, bolt-on, 100mm spacing, loose ball bearings, 36h / (R) Coaster brake, bolt-on, loose ball bearings, 110mm spacing, 18T cog, 36h
Rims
20" alloy, 16mm depth, 21mm internal width
20" alloy, 16mm depth, 21mm internal width
Spokes
Stainless, 14g
Stainless, 14g
Front Tire
Rhythm Lite, 30 TPI, wire bead, 20x2.3"
Rhythm Lite, 30 TPI, wire bead, 20x2.3"
Rear Tire
Rhythm Lite, 30 TPI, wire bead, 20x2.3"
Rhythm Lite, 30 TPI, wire bead, 20x2.3"
Geometry · choose a size for each bicycle
Geometry size
Reach
315 mm
315 mm
Stack
413 mm
413 mm
Effective top tube
449 mm
449 mm
Head-tube angle
70°
70°
Seat-tube angle
72°
72°
Head tube
80 mm
80 mm
Chainstay / rear center
386 mm
386 mm
Wheelbase
858 mm
858 mm
Bottom-bracket drop
42 mm
42 mm
Standover height
477 mm
477 mm
Fork offset / rake
23 mm
23 mm
Front center
476 mm
476 mm
Trail
71 mm
71 mm

Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.

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