The Ultimate Guide to Buying a Kids' Bike
woom OFF 6 Kids' Mountain Bike
$1,049.00
Members get an est. $104.90 in rewards
Stable and responsive on rough terrain, the woom OFF 6 kids' mountain bike combines rugged capability with ergonomics designed for growing bodies and developing skills—on trails, gravel and asphalt.
Only thru 9/28
Earn 2x card rewards Instead of 5%, earn 10% in card rewards† on REI purchases—even sale items—with your REI Co-op® Mastercard® Sep 18–28. Terms apply. Learn more
Key Details
Wheel Size
26 inches
Number of Gears
9 gear(s)
- 9-speed SRAM X5 drivetrain has a wide gear ratio for tackling diverse terrain and is suitable for a wide range of gradients thanks to an 11–34T cassette
- Precise and easy-to-use SRAM trigger shifter allows riders to shift smoothly through the gears using their thumb and index finger
- With excellent modulation and special levers designed for kids' hands, the hydraulic disc brakes increase safety and control on rough terrain and in wet conditions
- Flip-flop design allows the stem to be mounted upside down to adjust the handlebar height, ensuring the perfect hand position and fit
- Quick-release seatpost clamp allows the saddle to be adjusted with ease while remaining secure
- Ergonomic contact points are made specifically for kids because comfort is important to the riding experience
- Custom-size saddle is designed to accommodate their biomechanics; tapered handlebar ends and custom grips are ergonomically designed for small hands, with off-roading in mind
- Pedals are durable, reflective and feature slip-resistant pins for extra traction
- Ultralight aluminum frame with butted hydroformed tubes has a long wheelbase, sporty geometry and slack steering angle
- The bend in the top tube makes it easy to dismount quickly in any situation; cable port on the seat tube allows for the addition of an internally routed dropper seatpost
- High-quality Schwalbe mountain bike tires offer an ideal combination of low rolling resistance, maximum grip, ample shock absorption and excellent durability
- Together, the rims and Schwalbe tires are tubeless compatible
- 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 all woom 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 | Mountain Biking |
|---|---|
| Frame | Lightweight, high-quality 6061 T6 aluminum with butted and hydroformed tubes |
| Mountain Bike Style | Cross-country |
| Bike Suspension | No Suspension |
| Fork | Light carbon fork with 1 to 1-1/8 in. tapered steerer tube; 100 x 15 mm thru axles; post mount for disc brakes |
| Crankset | Lightweight, forged aluminum 5.9 in. (150 mm) kid-specific cranks with narrow tread (Q-factor) |
| Bottom Bracket | Thun |
| Shifters | SRAM X5 trigger |
| Rear Derailleur | SRAM X5 |
| Rear Cogs | 9-speed, 11-36T cassette |
| Number of Gears | 9 gear(s) |
| Brake Type | Hydraulic Disc Brake |
| Brakes | Promax hydraulic disc brakes |
| Brake Levers | Ergonomic brake levers designed for kids' hands |
| Rims | Tubeless-compatible Alexrims wheelset |
| Front Hub | Front hub for disc brake; 20h, 14 gauge, 100 x 15 mm; 2x bearings without quick release |
| Rear Hub | Rear hub for disc brake; 20h, 14 gauge, 135 x 12 mm; alloy cassette body; 4x sealed bearings without quick release |
| Wheel Size | 26 inches |
| Tires | Schwalbe Rocket Ron with ADDIX SPEED rubber compound |
| Tire Width | 2.35 inches |
| Handlebar Shape | Riser Bar |
| Handlebar | Wide, ergonomically adapted and lightweight aluminum bars for more control; tapered ends to fit kids' hands; sandblasted and silver anodized; 665 mm wide; 20 mm rise |
| Stem | Forged aluminum and CNC-machined; handlebars attached via 2 clamps; +/-15-deg. rise/drop with flip-flop design to adjust handlebar height; 50 mm long |
| Seat Post | Anodized aluminum seatpost with quick-release clamp and insertion marks to indicate the minimum insertion depth; 27.2 x 300 mm |
| Saddle | Ergonomically designed to fit kids' anatomy; streamlined mountain-bike-specific saddle design with side protection to lean against walls |
| Pedals | Black flat pedals made from fiber-reinforced nylon; 2 x 6 pins; chromoly axle |
| Headset | Fully integrated 1 to 1-1/8 in. headset with sealed industrial bearings |
| Chain | KMC X9 NPGY 1/2 in. x 11/128 in. |
| Weight | 22 lbs. 11.2 |
| Bike Weight | Bike weight is based on median size, as sold, or the average of two median sizes. |
| Gender | Kids' |
woom Bikes (243747)
| 26 IN | |
|---|---|
| Height Range | 4'7" - 5'5" |
| Effective Top Tube | 22.4 |
| Head Tube Angle (degrees) | 69 |
| Seat Tube Angle (degrees) | 71 |
| Wheelbase | 41.7 |
Sizing Notes
Measurements are stated in inches 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.
Write a Review
Adding a review will require a valid email for verification
1 month ago
Build quality is just ok
Rear wheel was not dished properly, it was pretty far off to one side. Front wheel was better but not perfect. Spoke tension was also not very uniform. Brake levers were over torqued. Brakes are not very powerful, even after bedding in; they feel like organic pads, so that's probably why. Wish it used standard diameter grips since this 26" size is basically an adult bike. I'm under the weight limit so I took it on some singletrack. Its very stiff, I feel like it coulda been made more comfortable, but I mostly ride steel bikes so who knows. Good deal overall so long as you know how to build wheels. Its very light, which was my main criteria.
Review originally posted on woombikes
1 year ago
Awful Experience with Brakes
The bike is nice and light and I like the air fork for tuning, but the hydraulic disc brakes leak and are underpowered and rapidly glaze so they are noisy. Weve replaced pads and rotors and taken it to professional shops twice but the noise comes back so fast my son refuses to brake and wont ride it. Compared to the other Woom bikes with rim brakes, the amount of fuss and expense of professional bleeding and rotor/pad replacement for hydraulic disc brakes are a terrible choice for a kids bike.
Review originally posted on woombikes
1 year ago
low quality brakes, proprietary crank
Background -- bikes are my life, I've had many, and my kids started on balance bikes at age 3 or 4. I can fix anything on a bike, including building new wheels. We loved the Woom Original line of bikes. The Off bikes are not all that. The brakes are crap. Front brake had no power after 18 months, needed a bleed. The bleed kit costs more than the cheapest Shimano hydraulic brake (which works quite well). The rear brake started leaking at the caliper after 22 months, soaking the rotor, so zero stopping power. This bike only gets ridden 5 hours/month in summer, should need zero brake maintenance. The crank is a proprietary design, looks like you can't replace chainring. Derailleur hanger gets in way of inserting rear thru axle. Rear wheel was built wrong, a spoke is bent around a spoke head at the hub (assembly error; see right side of pic). Too many problems for what this cost.
Review originally posted on woombikes
2 years ago
Anticipating it will be good
Just commenting on the other review. I t does not come with a bottle cage but the down tube has screws so you can add one if you want. No hydration options on a mountain bike? No chance.
Review originally posted on woombikes
2 years ago
Fastest
The bike is very smooth ride and very fast with little effort. Best feature of the bike is that chicks dig it. The bike is missing the option to carry a water bottle.
Review originally posted on woombikes
4 months ago
Review originally posted on woombikes
More expert advice
Need help choosing gear?
This item pays for membership!
Buy a lifetime $30 membership and make a $50 purchase by Nov 12, 2026.*
$104
10% Reward*
on this and every eligible full-price item*
+
$30
Bonus Card*
valid for 30 days after joining*
=
$134
Value