The Ultimate Guide to Buying a Kids' Bike
Austin, TX
Co-op Cycles REV 12 Kids' Bike
$229.00
Members get an est. $22.90 in rewards
When it's time for little riders to make the leap to pedaling, the Co-op Cycles REV 12 kids' bike helps the transition with a low stand-over height, removable training wheels and a rear coaster brake.
Key Details
Wheel Size
12 inches
- Designed to fit kids 2'6"–3'3" tall (typically ages 2–4) with an inseam length of 12-17 in.; see size chart for detailed buying guidance
- Light aluminum frame and low stand-over height make it easy to maneuver
- Rear coaster brake is intuitive to use: Simply backpedal to engage the brake
- Removable training wheels and built-in, full-length chainguard help kids learn to ride without fear of catching pants in the chain
- BMX-style handlebar is comfortable to grip; pads enhance safety
- Convenient handle is integrated into the back of the saddle for easy carrying or control when teaching kids to ride
- 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 | Cycling |
|---|---|
| Frame | 6061 aluminum single-speed frame |
| Bike Suspension | No Suspension |
| Fork | Steel |
| Crankset | Steel 1-piece crank |
| Bottom Bracket | Steel, loose ball bearing |
| Brake Type | Coaster |
| Brakes | Rear coaster |
| Rims | Steel |
| Front Hub | KT, 16h |
| Rear Hub | KT, 16h |
| Wheel Size | 12 inches |
| Tires | Kenda Kontact K-841 12.5 x 2.25 in. |
| Handlebar Shape | Riser Bar |
| Handlebar | Steel riser bar with padded cross bar |
| Stem | Steel BMX style |
| Seat Post | Integrated seat/post |
| Saddle | Co-op Cycles |
| Pedals | Wellgo composite platform |
| Headset | 1-1/8 threadless steel |
| Chain | KMC steel |
| Weight | 15 lbs. 12 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 (190741)
| 12 IN | |
|---|---|
| Reach | 225 |
| Stack | 247 |
| Effective Top Tube | 69 |
| Seat Tube Center-Top | 197 |
| Standover Height | 353.5 |
| Head Tube Angle (degrees) | 75 |
| Seat Tube Angle (degrees) | 70 |
| Bottom Bracket Height | 17 (rise) |
| Wheelbase | 603 |
| Chainstay | 256 |
| Fork Offset | 25 |
Sizing Notes
Measurements are stated in millimeters or degrees 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
Solid Bike!
LisaB3 years ago
We purchased this bike online for our 3 year-old granddaughter, and we were very pleasantly surprised! First, we opted to have it shipped to an REI store for (free!) assembly, to make sure it was built properly. They had it ready in a day, and we picked it up with our granddaughter in order for her to be properly fitted. She's a petite 3 year-old, and the seat was placed at the lowest level. She tried it out in the store, and they made a couple of other tweaks.
I remember riding a bike with training wheels and feeling like I was going to tip over. This bike is very stable, and she wasn't scared at all with tipping over. It's a very solid, well-made bike, with room to grow. We (and our granddaughter) are very happy with it!
LisaB
14 people found this review helpful
Most Helpful Critical Review
Super Bummed! Training wheels FALL OFF.
Tayl2 years ago
I wanted to love this bike, i really did. It is study and the correct size for my kiddo, and we love REI bikes. But this one is a dud. We had it for about a month, with normal bike riding for a toddler, a couple times a week for about 30 minutes to an hour, nothing intensive. The training wheels started falling off...so i would screw them back on, but then ten minutes later, they'd fall right back off. Which, when a two year old is riding, and training wheels fall off, it is a pretty scary situation for them and it always resulted in my toddler falling and hurting his elbows, bracing himself. So we took it into REI and got charged 48 bucks to "correct" the issue. Low and behold, the first time he rides it after getting it "repaired", the training wheel falls off again after 10 minutes. He was in the middle of the road crossing in between sidewalks and he just bit it. I wouldn't recommend this bike to anyone.
Tayl
14 people found this review helpful
Customer Images
Matt
Portland, Oregon
Tough, quality built bike.
2 years ago
This bike looks well built. I examined the welds, and how everything was aligned when constructed. I also like how the bike is so tough. My kids will not be able to break it. Details like the handle bar grips, the seat, and tires are also high quality accents, and not the cheapest REI could find. The orange color is awesome. It even comes with a page of cool stickers, so your kids can personalize their bike. My son hopped on and started riding--transitioning up from a balance bike.
Yes , I recommend this product
LisaB
Solid Bike!
3 years ago
We purchased this bike online for our 3 year-old granddaughter, and we were very pleasantly surprised! First, we opted to have it shipped to an REI store for (free!) assembly, to make sure it was built properly. They had it ready in a day, and we picked it up with our granddaughter in order for her to be properly fitted. She's a petite 3 year-old, and the seat was placed at the lowest level. She tried it out in the store, and they made a couple of other tweaks. I remember riding a bike with training wheels and feeling like I was going to tip over. This bike is very stable, and she wasn't scared at all with tipping over. It's a very solid, well-made bike, with room to grow. We (and our granddaughter) are very happy with it!
Tayl
Super Bummed! Training wheels FALL OFF.
2 years ago
I wanted to love this bike, i really did. It is study and the correct size for my kiddo, and we love REI bikes. But this one is a dud. We had it for about a month, with normal bike riding for a toddler, a couple times a week for about 30 minutes to an hour, nothing intensive. The training wheels started falling off...so i would screw them back on, but then ten minutes later, they'd fall right back off. Which, when a two year old is riding, and training wheels fall off, it is a pretty scary situation for them and it always resulted in my toddler falling and hurting his elbows, bracing himself. So we took it into REI and got charged 48 bucks to "correct" the issue. Low and behold, the first time he rides it after getting it "repaired", the training wheel falls off again after 10 minutes. He was in the middle of the road crossing in between sidewalks and he just bit it. I wouldn't recommend this bike to anyone.
No, I do not recommend this product
Richard
Southern California
Don't get this bike, design flaw
1 year ago
Terrible training wheels. They're not secured by a nut, but tensioned into the bike itself so eventually they'll strip out and your child will fall after normal riding. When you bring it back in for the normal 1 year warrantee they'll call it user error because there was a sticker that says "tighten every time before use" and then charge you an obscene amount of money to fix what's obviously a design flaw Until they fix the problem, don't get this bike The bike is also very heavy, i would go with the woom if i could do it again.
No, I do not recommend this product
MDUN86
Brookings, South Dakota
Not good
2 years ago
Bought this bike for my son for his birthday and had to pay the extra $30 for shipping. I received the bike and put the rest of it together it looks nice but when it comes to function it is lacking a lot. The pedals seems very stiff to function and seem to catch when making a rotation which is something that will not work for a little kid. Also when pedaling it has a lot of noise coming from the back wheel. When turning the bike upside down and just try to free spin the wheel it does not spin freely for long and quickly comes to a stop for both the front and rear wheel. Lastly when I turned the bike upside down and rotate the rear wheel it is bent. Maybe it’s just a bad batch but disappointed is an understatement REI usually has extremely high quality gear but this one’s a miss.
No, I do not recommend this product
Sarah245
Seattle
Wouldn’t buy again
2 years ago
I bought this bike for my 3yo. He went from his balance bike to this pretty easy. However, this bike is just too heavy and the foot brake is a huge downside. I wish it had a hand break. Kids this age just have a hard time with that coordination while using their hands to steer. It is sturdy, but the paint chips very easily.
No, I do not recommend this product
Sjw46
Madison, WI
Well made but too heavy for a kids bike
1 year ago
Bike is well made but is extremely heavy! I couldn’t find its weight in the product description, but because the frame is aluminum I assumed that it would be relatively light. Unfortunately no, it is extremely heavy! It is so heavy that my son cannot ride it up even little hills.
No, I do not recommend this product
Czar
California
Bad training wheels design
2 years ago
The training wheels screw into the frame ok the body. I took this off twice and know it is stripped. Horrible design for the training wheels would not recommend.
No, I do not recommend this product
ChrisL
Great purchase, love the trade-in option
2 years ago
My son used his balanced bike from age 2 to 3. He got the hang of this bike in 3min without the training wheels at 3!
Yes , I recommend this product
Let the Good Times Roll
Los Angeles, CA
Orange is the New Black!
1 year ago
Good little bike. Well made, good weight, nice color and it feels durable, which is a bonus. To the “Go Cougs” reviewer. From the photo you posted, it looks like you need to raise the seat post. That will provide proper leg extension for your youngster, help him peddle easier and prevent injury. Happy riding.
Yes , I recommend this product
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