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Today’s DealsRiprock Coaster 20
A 20″ aluminum frame general youth bike with coaster brakes.
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Manufacturer Price
$399| Weight | 23.4 lbs |
|---|---|
| Frame | Aluminum |
| Suspension | Rigid |
| Fork | Steel |
| Wheels | 20″ Aluminum |
| Brakes | Coaster |

Nov 2023 · Natalie Martins
More trail worthy than previous models, the 2022 Specialized Riprock 20 and 24 sport some great improvements, but stop short of perfection.
Redesigned with slacker, more modern geometry
Hydraulic disc brakes
Internally routed for dropper post
Lightweight compared to predecessor
9-speed drivetrain with trigger shifters
High-performing Manitou air fork on Expert model
Affordable price
Dropper post compatible even on 20-inch
Low stack geometry may not fit taller riders well
Minimum seat height too high for small kids (seat post cannot be slammed fully)
Handlebar too wide for some young riders
Base model tires not tubeless-ready
Price jump to Expert model is significant

Oct 2021
Specialized introduces an updated Riprock for young rippers with all the bells and whistles of its classic adult bikes. It has modern geometery and some cool new parts to go with the redesigned frame.

Oct 2021 · Mike Kazimer
The new Riprocks have updated geometry and components selected especially for smaller riders.
| Frame | Specialized A1 Premium Aluminum Colors: Satin Fiery Red / Dark Navy; Gloss Limestone / Purple Haze; Satin Deep Marine / Fiery Red; Gloss Dune White / White Sage |
|---|---|
| Fork | Hi-Ten steel |
| Bottom Bracket | Feimin FP-B701, 68MM |
| Stem | Die Cast Aluminum, 37mm length, 10 degree, 22.2 clamp diameter |
| Handlebar | BMX, steel, 10-degree backsweep, 4-degree upsweep, 130mm rise, 560mm width, 22.2mm |
| Saddle | Specialized Kids' Henge |
| Seatpost | Steel, 25.4mm Type: Rigid |
| Pedals | Nylon platform w/ reflectors |
| Grips | Specialized, slip-on |
| Crank | Hi-Ten steel, 114mm, Steel, 36T |
|---|---|
| Chain | KMC Z510, single-speed, anti-drop, 1/2"x1/8" |
| Brakes | V-brake w/ tool-less reach adjust brake lever Type: Coaster |
| Rims | 20" alloy, 16mm depth, 21mm internal width |
|---|---|
| Spokes | Stainless, 14g |
| Front Hub | Steel, bolt-on, 100mm spacing, loose ball bearings, 36h |
| Rear Hub | Coaster brake, bolt-on, loose ball bearings, 110mm spacing, 18T cog, 36h |
| Tires | Front: Rhythm Lite, 30 TPI, wire bead, 20x2.3", Rear: Rhythm Lite, 30 TPI, wire bead, 20x2.3" |
First added April 3
Last updated June 4