The Ultimate Guide to Buying a Kids' Bike
Austin, TX
Co-op Cycles REV 20 Kids' Bike
$319.00
Members get an est. $31.90 in rewards
Young riders can transition to hand brakes more easily with the Co-op Cycles REV 20 bike—it has coaster brakes, too, as well as a light aluminum frame and familiar BMX-inspired handlebar.
Key Details
Wheel Size
20 inches
- Designed to fit kids 3'7"–4'4" (typically ages 6–10) with an inseam length of 21–25 in.; see size chart for detailed buying guidance
- Aluminum frame is light enough for kids to handle, and sturdy enough to handle kids
- BMX-style handlebar is comfortable and fun
- 2 brake options let kids learn to use hand brakes while offering the familiarity of a coaster brake while they adjust
- Sticker pack includes tons of fun designs so kids can decorate their bike however they want
- Bicycle weight limit is 80 lbs. total, including rider + all gear carried on the bike and on the rider's body
- Includes training wheels with new and improved training wheel attachment system as of June 2024
- NOTE: Specs and images are subject to change based on component availability
Imported.
This bike comes with Coast to Coast Support, which includes:
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
View the Co-op Cycles Rev Product LineView all Co-op Cycles Kids' Bikes- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
- 20% off shop services
- Free tubes with purchase of flat tire repair (Co-op Cycles brand tubes only; tube must be installed at time of purchase)
New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
| Best Use | Recreational Cycling |
|---|---|
| Frame | Aluminum single-speed frame |
| Bike Suspension | No Suspension |
| Fork | Steel |
| Crankset | Alloy, 36T |
| Bottom Bracket | Cartridge |
| Brake Type | Rim |
| Brakes | Tektro linear-pull and coaster brake |
| Brake Levers | Tektro |
| Rims | Aluminum |
| Front Hub | KT, 36h, nutted |
| Rear Hub | KT, 36h coaster, nutted |
| Wheel Size | 20 inches |
| Tires | Kenda Kontact 20 x 2.25 in. |
| Handlebar Shape | BMX Bar |
| Handlebar | Steel |
| Stem | Co-op Cycles aluminum |
| Seat Post | Alloy |
| Saddle | Co-op Cycles |
| Pedals | Wellgo composite platform |
| Headset | 1-1/8 in. threadless stainless steel |
| Chain | KMC |
| Weight | 20 lbs. 1.3 oz. |
| Bike Weight | Bike weight is based on median size, as sold, or the average of two median sizes. |
| Gender | Kids' |
| Sustainability | From a Climate Label Certified brand |
Co-op Cycles Bikes (190743)
| 20 IN | |
|---|---|
| Reach | 323 |
| Stack | 390.5 |
| Effective Top Tube | 473 |
| Seat Tube Center-Top | 257 |
| Standover Height | 515 |
| Head Tube Angle (degrees) | 0 |
| Seat Tube Angle (degrees) | 69 |
| Wheelbase | 871.5 |
| Chainstay | 375 |
| Fork Offset | 42 |
Sizing Notes
Measurements are stated in millimeters unless otherwise indicated.
How we measure bikes
- Standover Height Standover Height is a measurement from the ground to the top of the top tube, measured at the midpoint of the top tube.
- Reach Reach is the horizontal distance from the center of the cranks to the center of the head tube, measured at head tube level.
- Stack Stack is the vertical distance from the center of the cranks to the center of the head tube, measured to the top of the head tube.
- Effective Top Tube Effective top tube is the distance from the center of the head tube to the center of the seat tube/seat post, measured parallel to the ground.
- Seat Tube Center to Top Seat Tube length is the measurement of the seat tube, from the center of the cranks to the top of the seat tube.
- Head Tube Length Head Tube Length is measured from the bottom to the top of the head tube.
- Head Tube Angle Head Tube Angle is the acute angle between the head tube and the ground (measured towards the rear of the bike)
- Seat Tube Angle Seat Tube Angle is the acute angle between the seat tube and the ground (measured towards the rear of the bike).
- Bottom Bracket Height Bottom Bracket Height is a measurement taken vertically from the ground up to the center of the cranks.
- Wheelbase Wheelbase is the measurement from the center of the front axle to the center of the rear axle.
- Chainstay Length Chainstay Length is the measurement from the center of the cranks to the center of the rear axle.
- Fork Offset Fork Offset, or rake, is the distance from the front axle to a line drawn parallel to the center of the head tube or steering axis.
Buying Advice
More expert advice
Better gear is built together
From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.
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Most Helpful Favorable Review
Great bike at a great price (discounted)
B Hay3 years ago
I bought this for my 7.5 yo daughter who has outgrown her character bike. At a third off, this is a smoking good deal. I especially like the combo of coaster and grip brakes so she can easily transition to the next level. Full disclosure, we are not a hard core riding family so if you’re looking for a recommendation from someone who has trained for the Tour de France you’ll need to read further. If you’re like us, you’ll like this bike. Just wait for the sale.
B Hay
Northwrn Alabama
24 people found this review helpful
Most Helpful Critical Review
Outdated Thinking
Brad2 years ago
Coaster brakes on a 20” bike? Only a rear hand brake? Kids really should be riding on double hand brake bikes by 20”, even 16” sizes on more modern brands have them standard now. Am surprised to see the Coop brand so far behind the times. Exceptionally heavy, too thick/narrow pedals… the list of cheap build quality goes on. Regret having recommended these for my family.
Brad
15 people found this review helpful
Customer Images
Erik T
Gerrardstown, WV
Great bike, could use adjustable training wheels
3 years ago
Really nice bike, but could use adjustable training wheels. The ones on there only sit at one height. They are sturdy, but it would be great to have adjustability. The rest of the bike is great. As a cyclist is has much of what you’d see in a current road bike. The seat is adjustable from to back, where most just go up or down. The handlebars are attached with a stem, the brakes work well…..all around really nice.
B Hay
Northwrn Alabama
Great bike at a great price (discounted)
3 years ago
I bought this for my 7.5 yo daughter who has outgrown her character bike. At a third off, this is a smoking good deal. I especially like the combo of coaster and grip brakes so she can easily transition to the next level. Full disclosure, we are not a hard core riding family so if you’re looking for a recommendation from someone who has trained for the Tour de France you’ll need to read further. If you’re like us, you’ll like this bike. Just wait for the sale.
Yes , I recommend this product
LITTLE NONO
Flagstaff, Az
REV 20 ROCKS!!
2 years ago
Got this Rev 20 for my 3year old that somehow bypassed all bikes after he wore his Rev12.. I don't understand why so many people are having issues. Bike is a little big for him but bike is pretty light and he pedals the living daylights out of it. Stepping him into a Rev 20 w gears next. Yes he is 3 years old. Quality is awesome on this bike w great materials.. love that has Noth brakes pedal and levers. He loves having n g that control.. Training wheels that fall off I would thing is the best way to get them moving passed the training wheels stage. Just my thoughts.. and my 3 year old thoughts:-) enjoy
Yes , I recommend this product
Anonymous
1 day ago
FGDad
Sewell, NJ
REI CO-OP BIKES are great quality & a great value.
3 years ago
My 7 year old loves this Co-Op bike. He's not quite ready to lose the training wheels yet but was getting too big for his 16” bike.
Yes , I recommend this product
fundad
Chicago, IL
Poor Quality and Does not Function
2 years ago
We got this bike for our daugher for Christmas 2022. It has been so disapointing and nothing like normal REI products. The training wheels fall off repeatedly while she rides it. One of the screws was stripped after only a few weeks of her riding it and we took it to our local REI bike shop to have it fixed, but the problem keeps recurring. The chain also falls off and needs put back on. The bike is really heavy and hard for her to manuever. I would not reccommend this product.
No, I do not recommend this product
MWeeks
Portland, OR
Great “big kid bike”
2 years ago
This bike is an absolute dream! I got it for my son - he’s five years old. It’s just exactly the right size based on measurements I saw and hoped would work. The staff who assembled the bike did an excellent and thorough job, and were so helpful and friendly at pickup. My son loves it! Bonus points it weathered his first crash quite nicely. The color is spectacular. Highly recommend.
Yes , I recommend this product
Grey
Oconomowoc
Great Co-op ReV 20 Kids Bike
2 years ago
My grandson loves the style and color of this bike. I love the fact that it has dual brakes! He is 6, but a big six, and just learned the standard back pedal brake. This having both the pedal break and a rear wheel brake is a great transition bike. He will also have some room to grow with it. Thanks REI!
Yes , I recommend this product
Sean C
Mukilteo, WA
Great Transition Kids' Bike
2 years ago
I read a lot of reviews and ended up at the Rev 20 for my daughter (7yrs), who had outgrown an older, heavier entry level bike. The Rev20 is sturdily built and the training wheels don't come loose. She likes the flexibility of the hand brake or the pedal brakes. Also, despite being nearly twice the size of her old bike the Rev 20 weighs-in a bit lighter, so it's much easier for her to pedal. Her favorite thing was the sticker kit- we definitely won't be confusing her Rev20 with another!
Yes , I recommend this product
MrEE
Virginia
Great first bike
2 years ago
Great kids bike. I worked at a bicycle shop a lifetime ago, and I'm picky about bikes. Yes, it's a little more expensive than something from a big box store, but it's absolutely superior. My 7yo daughter loves it and can't get enough of it. I just hope she doesn't outgrow it too quickly.
Yes , I recommend this product
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