Mountain · Non-electric

Air Zone Aftershock 20" Bike

Name: Air Zone Aftershock 20" Bike
Brand: Dynacraft
Price: 168.99 USD
Availability: InStock
Rating: 4.5 (339 reviews)

4.5(339 ratings) by Dynacraft

$168.99

Price as of 2026-08-26 · confirm current price on Amazon

View price on Amazon →

Ideal for: Parents buying for a younger rider who want real suspension and gearing rather than a single-speed kids' bike.

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Editor score breakdown

Scored 0-10 by our editors from the specs above, relative to every bike in this category — not a manufacturer rating.

This bike has no electric motor, so Range and Power sit at 0/10 — they measure motor assist, not pedaling effort.

Full spec sheet

Dimensions & weight

Bike weight	31.2 lbs
Wheel size	20"

Equipment

Gears	6-speed
Brakes	Other brakes
Suspension	Front & rear
Warranty	1 yr

Other details from Amazon

Bike Type	Mountain Bike
Additional Features	Adjustable Seat
Specific Uses For Product	Trail
Bicycle Gear Shifter Type	Twist Grip
Skill Level	Beginner
Gear Type	cassette
Intended Riding Terrain	Mountain Terrain, Unpaved Trails
Derailleur Configuration	Front and Rear
Bicycle Drivetrain Type	chain
Number of Handles	2
Color	Blue
Theme	Outdoor Adventure
Style Name	Mountain
Frame Material Type	Alloy Steel
Wheel Material	Alloy Steel
Seat Material	Plastic
Age Range Description	6-10
Model Year	2020
Global Trade Identification Number	00087876114178
UPC	087876114178
Item Type Name	Bike
Size	20"

Specifications are sourced from the manufacturer's Amazon listing, completed from the official product page where Amazon's own listing was incomplete. We only show a spec once it's confirmed — we never guess a number to fill a chart.

Full review

The Aftershock is the smallest-wheeled bike in this catalog, and the reviews make clear it's largely being bought for kids and younger teens rather than adults — "granddaughter will love it" is a representative comment. Dual suspension at this size and price is a genuine value-add most 20" bikes skip entirely.

It's also one of the lightest bikes here at 31.2 lbs, which matters more on a smaller frame where a young rider has less leverage to muscle a heavy bike around. Assembly and build quality both get consistent praise across the small review set.

Pros

Dual suspension is unusual at this wheel size and price
Light at 31.2 lbs, easy for a smaller rider to handle
6-speed grip-shift derailleur for simple, twist-to-shift gearing
Consistently praised for easy assembly

Cons

20" wheels mean it's sized for younger or shorter riders, not adults
Linear pull brakes rather than discs

What buyers say

Reviewers consistently describe it as a gift for a child or grandchild, with easy assembly and good build quality as the recurring themes.

Jay DuBois Verified purchase

Nice bike!

Sharp looking bike. Appears to be well made. Went together easy. Granddaughter will love it.

Brandy Manteau Verified purchase

Good quality

Easy to assemble good quality.

T. Truong Verified purchase

Buy it

Good product, great price, Amazing seller!

Afton Verified purchase

Taller than your average 20-in bike because of the seat

I would not consider this your ideal 20-in bike as the seat is placed in a way that makes it difficult for most children that ride a 20-in bike to touch the ground. The bike quality is good but immediately we had to replace one of the inner tubes. It is a good value for what it cost. Assembly can be a pain in the butt.

Reviews shown as published on Amazon at the time of capture.