Name: Dart Plus 20” Kids’ Bike 7 Speed (6-8 years)
Brand: Retrospec
Price: 379.99 USD
Availability: InStock
Rating: 4.6 (49 reviews)

Features

Ultra Lightweight & Made for Kids

A better fitting bike leads to faster learning, heightened confidence, & more fun. At just 27 lbs, this bike’s lightweight aluminum frame is easier for kids to maneuver. Its kid-centric geometry and ergonomic saddle were tailor-made just for them.

Koda Plus 20" Kids' Black bicycle seat with arrow indicating adjustable height on a black bike frame.

Grows With Them

This bike’s wide range of adjustable seat height, extending from just 21.75” up to 27”, can accommodate small riders and their growth spurts, so little cyclists can keep riding comfortably as their bike grows with them.

Dart Plus 20" Kids' Bicycle black handlebar with brake lever on a white background.

Powerful, Reliable Braking

Mechanical disc brakes offer safe and consistent stopping power in any conditions, leading to more confident riding. Easy-reach levers adjust to fit smaller hands (no tools needed!) and teach them early how to use hand brakes like those found on adult bikes.

Close-up of the Koda Plus 20" Kids' Matte Black Mamba Bicycle's front wheel with disc brake and part of the frame visible displaying "retrospec" in neon green.

Smooth & Shock-Absorbent

This kids’ bike is equipped with wide, knobby tires and a 40mm front suspension fork for optimal comfort, control, and safety on bumpy roads.

Close-up of the Dart Plus 20" Kids' Bicycle's rear wheel, gears, chain, and pedal mechanism, with "Dart Plus" branded on the frame in neon green, on a white background.

Tackle Hills and Flats

With a Shimano 7-speed drivetrain adding power and speed to their ride, they can tackle the hills and flats of the cul-de-sac while learning how to shift and adjust the bike’s resistance for a comfortable ride on varying inclines.

Koda Plus 20" Kids' Bicycle handlebar with brake lever and gear shifter on white background.

Shimano Revoshift Shifters

A safer ride at their fingertips – literally. Kids can safely change gears with palms on the handlebars and eyes on the road.

Close-up of Dart Plus 20" Kids Bike handlebars with brake levers and gear shifters on white background.

Threadless Steering System

Stronger, lighter, more precise steering, and easier to maintain.

Ultra Lightweight & Made for Kids

A better fitting bike leads to faster learning, heightened confidence, & more fun. At just 27 lbs, this bike’s lightweight aluminum frame is easier for kids to maneuver. Its kid-centric geometry and ergonomic saddle were tailor-made just for them.
Grows With Them

This bike’s wide range of adjustable seat height, extending from just 21.75” up to 27”, can accommodate small riders and their growth spurts, so little cyclists can keep riding comfortably as their bike grows with them.
Powerful, Reliable Braking

Mechanical disc brakes offer safe and consistent stopping power in any conditions, leading to more confident riding. Easy-reach levers adjust to fit smaller hands (no tools needed!) and teach them early how to use hand brakes like those found on adult bikes.
Smooth & Shock-Absorbent

This kids’ bike is equipped with wide, knobby tires and a 40mm front suspension fork for optimal comfort, control, and safety on bumpy roads.
Tackle Hills and Flats

With a Shimano 7-speed drivetrain adding power and speed to their ride, they can tackle the hills and flats of the cul-de-sac while learning how to shift and adjust the bike’s resistance for a comfortable ride on varying inclines.
Shimano Revoshift Shifters

A safer ride at their fingertips – literally. Kids can safely change gears with palms on the handlebars and eyes on the road.
Threadless Steering System

Stronger, lighter, more precise steering, and easier to maintain.

All Natural Fun From the Field

Their Environment

Best for Outdoor

Indoor/Outdoor

Outdoor

⚠️ WARNING! This product can expose you to chemicals including Carbon-Black Extracts, which is known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.p65warnings.ca.gov/

We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, materials, and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. Bike and frame weights are based off pre-production painted frames at time of publication. Weights may vary in final production.

Specifications
Sizing
Financing
Assembly & Owner's Manual

Specifications

Frameset

Frame Aluminum alloy, low-profile/wide fit range and easy step-over design, tapered headtube, internal rear derailleur and rear brake routing, seat stay/rear rack mounts, replaceable rear der hanger
Fork Zoom aluminum alloy crown w/steel lowers, 40mm travel (no adjustments)

Wheelset

Rims 20" aluminum, double-wall, 32H
Front Hub Aluminum alloy, ball-bearing, 32H, bolt-on, 100mmOLD, 3/8" (10mm)
Rear Hub Aluminum alloy, ball-bearing, 32H, bolt-on, 135mmOLD, 3/8" (10mm)
Spokes 14G Stainless
Tires 20 x 2.30 small block knobbies, S/V

Accessories

Kickstand Rear Chainstay Mount, Steel
Rear Derailleur Guard Steel

Drivetrain

Rear Derailleur Shimano Tourney 7S
Shifters Shimano Revoshift (twist)
Crank Aluminum alloy 3-piece 127mm x 32T w/chainwheel guards
Chain KMC Z-series 1/2 x 3/32"
BB Sealed Cartridge, threaded, square taper
Freewheel/Cog Shimano Tourney 7S, 14-28T

Components

Headset Semi-Integrated, steel, 15mm spacers: 1x5, 1x10mm
Brakes Hand-operated aluminum mechanical disc brakes, 160mm rotors, w/Tool-Free reach-adjustable aluminum brake levers
Handlebars Aluminum alloy riser, 560mm x 40mm, 31.8mm clamp
Grips retrospec 120mm w/end plugs - PVC/BPA/Lead/Phthalate safe
Stem Aluminum alloy, 4-bolt face, 40mm x 8°
Saddle retrospec Sport padded
Seatpost Steel 25.4mm x 300mm
Seatpost Clamp Aluminum QR
Pedals Low-Profile Platform, Reinforced Nylon, w/reflectors, 9/16"

Recommended Weight Limit 150lbs

Sizing

How to measure my inseam for a bike

Your inseam can help you find the perfect sized bike (measuring it properly is similar to pant inseams but measured a little differently). Here's how they work:

Stand upright with your feet 6-8" apart.
Using a tape measure or tailor tape, measure from the bottom of your foot to the top of the inside of your leg.
Compare your inseam measurement to the standover height of the bike. You should have about an inch of space between your body and the top tube.

ARider Height

BInseam

CTop Tube

Size	Height Range	Standover Height
20"	4' - 5'	21"

Financing

Buy Now, Pay Later

Make easy monthly payments over 3,6 or 12 months

$89.60

PER MONTH

3 months

APR 20.22%

Interest $8.81

Total $268.80

$89.60

PER MONTH

3 months

APR 20.22%

Interest $8.81

Total $268.80

$89.60

PER MONTH

3 months

APR 20.22%

Interest $8.81

Total $268.80

Get a real-time decision with just 5 pieces of info.

Assembly & Owner's Manual

Assembly Instructions

Owner's Manual

4.6

Rated 4.6 out of 5 stars

Based on 49 reviews

Total 5 star reviews: 33 Total 4 star reviews: 13 Total 3 star reviews: 2 Total 2 star reviews: 0 Total 1 star reviews: 1

49 reviews

Sort

Alexis and Daniel V.
Verified Reviewer
12/19/24
Rated 4 out of 5 stars
From someone who bought TWO Dart bikes
I purchased two of these bikes from Amazon—a 24-inch and a 20-inch. Like many reviews on Retrospec’s website mention, you can adjust the seat but not the handlebars. While I do wish the handlebars were adjustable, my kids haven’t been bothered by their height since we adjusted their seats.
Assembly was another common topic in reviews. For us, it wasn’t too difficult because my husband has prior experience and owns bike tools. However, for someone without experience, it could require extra costs to have a bike shop handle assembly and tuning. Both bikes arrived with the front brakes too tight, causing them to rub against the tires when not in use. This possible extra cost of needing to go to a bike shop took away a star. The price point is only as good as your ownership of bike tools and experience with bike assembly and tune up.
Customer service, though, was excellent. Our 24-inch bike arrived with flat tires, and Zak from customer service quickly responded to our email. He shipped replacement tubes within just two days—fantastic turnaround time!
Overall, these bikes are a great choice: solid quality, Shimano gears, hand brakes, sleek design, and a reasonable price point. Thanks to the quality and great customer service, we also bought the Cub 2 balance bike for our youngest, which has great reviews as well. We’re now considering their Beaumont City bike for myself. Retrospec’s customer service and honest reviews make them a brand we trust!
Was this helpful?
Robert K.
Verified Buyer
11/11/24
Rated 4 out of 5 stars
Overall great bike
Overall a great bike. The front wheel was not 100% true when I took it out of the box and my son can't seem to get it into first gear. Will tighten the spokes and adjust the derailer and will hopefully be good to go.
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Matt L.
Verified Buyer
10/8/24
Rated 5 out of 5 stars
Dart
Thanks all! She loves it
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Jane S.
Verified Buyer
9/22/24
Rated 5 out of 5 stars
Thank you Zak
The bike arrived on September 19, on my Granddaughter’s birthday. She is thrilled.
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James D.
Verified Buyer
9/7/24
Rated 4 out of 5 stars
Pretty good for the price.
Overall I have been pleased with the purchase. Other kids bikes I was looking at were almost double the price, or more! The biggest thing I noticed setting the bike up was that the front bearing nuts were way too tight so the front wheel did not spin freely. I’ve worked on bikes for years so have the tools and knowledge to readjust but someone without these tools would not be able to do it with the free tools included with the bike.
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Dart Plus 20” Kids’ Bike 7 Speed (6-8 years)

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Features

Ultra Lightweight & Made for Kids

Grows With Them

Powerful, Reliable Braking

Smooth & Shock-Absorbent

Tackle Hills and Flats

Shimano Revoshift Shifters

Threadless Steering System

Ultra Lightweight & Made for Kids

Grows With Them

Powerful, Reliable Braking

Smooth & Shock-Absorbent

Tackle Hills and Flats

Shimano Revoshift Shifters

Threadless Steering System

All Natural Fun From the Field

Best for Outdoor

Specifications

Sizing

How to measure my inseam for a bike

Buy Now, Pay Later

Please enter an amount larger than or equal to $100.

Assembly Instructions