Features
- Happy venturing down a gravel path, up a mountain road or on the MTB trail, the 20 in. woom OFF 4 kids’ mountain bike can also hold its own on the pavement and is specifically designed for kids.
- This bike is stable, responsive and equipped with high-performance components and tubeless-compatible rims and tires
- Ultralight aluminum frame with butted hydroformed tubes has a long wheelbase, sporty geometry and slack steering angle
- Bend in the top tube makes the bike easy to dismount quickly in any situation
- Superlight carbon fork offers maximum stability with minimal weight; multidirectional carbon fibers ensure plenty of torsional strength when steering and braking
- Precise and easy-to-operate SRAM X5 gear system has 9 gears suitable for a wide range of gradients thanks to 28 teeth in the front and an 11-32 cassette in the back
- Easy-to-use SRAM trigger shifter allows riders to shift smoothly and reliably through the gears using their thumb and index finger
- Hydraulic disc brakes improve control on rough terrain and in wet conditions with their excellent modulation and brake levers designed for kids’ hands
- Quick-release seatpost clamp allows the saddle to be easily adjusted while remaining secure
- Contact points on the bike are made specifically for kids
- Custom-sized saddle is designed to accommodate the biomechanics of young riders
- Tapered handlebar ends and custom grips are ergonomically designed for kids’ small hands, with off-road riding in mind
- Extra rubber on the palm-facing portion of the grips adds comfort; 100% silicone grips provide maximum hand grip
- Pedals are durable and reflective, and they feature slip-resistant pins for extra traction
- Thanks to its flip-flop design, the stem can be turned over and mounted upside down to adjust the handlebar height, helping assure the perfect hand position and fit
- High-quality Schwalbe mountain bike tires with ADDIX Speed rubber compound offer a combo of low rolling resistance, high grip, good shock absorption and excellent durability
- Rims and Schwalbe tires are compatible to be set up as a tubeless system
- Long wheelbase and low center of gravity aid in balancing
- woom-specific molded chainstay protector
- Thru axle provides maximum torsional strength
- Lightweight, forged-aluminum, 4.3 in. (110 mm), kid-specific cranks with narrow tread (Q-factor)
- NOTE: Specs and images are subject to change based on component availability
Specifications
- Best Use: Mountain Biking
- Frame: 6061 T6 aluminum with butted and hydroformed tubes
- Mountain Bike Style: Cross-country
- Bike Suspension: No Suspension
- Fork: Light carbon fork; 1 to 1-1/8 in. tapered steerer tube; 100 x 15 mm thru axle; post mount for disc brake
- Crankset: Lightweight, forged aluminum, 4.3 in. (110 mm), kid-specific cranks with narrow tread (Q-factor); narrow-wide chainring with 28 teeth in the front
- Bottom Bracket: Thun
- Shifters: SRAM X5 trigger shifter
- Rear Derailleur: SRAM X5 rear derailleur
- Rear Cogs: Sunrace 9-speed 11-32T
- Number of Gears: 9 gear(s)
- Brake Type: Hydraulic Disc Brake
- Brakes: Promax Hydraulic disc brakes
- Brake Levers: Ergonomic brake levers designed for childrens’ 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: 20 inches
- Tires: Schwalbe Rocket Ron with ADDIX SPEED rubber compound 20 x 2.25 in.
- Tire Width: 2.25 inches
- Handlebar Shape: Riser Bar
- Handlebar: Aluminum; sandblasted; silver anodized; width: 570 mm rise: 20 mm
- Stem: Forged aluminum; CNC-machined; rise/drop: +/-15 deg. with flip-flop design to adjust the handlebar height; length: 50 mm
- Seat Post: Anodized aluminum; 27.2 x 250 mm; insertion marks indicate the minimum insertion depth; quick-release seatpost clamp
- Saddle: Mountain-bike specific saddle with side protection
- Pedals: Fiber-reinforced nylon; flat; 2 x 6 pins; chromoly axle
- Headset: Fully integrated 1 to 1-1/8 in. headset; sealed industrial bearings
- Chain: KMC X9 NPGY 1/2 in. x 11/128 in.
- Weight: 18 lbs. 8 oz.
- Bike Weight: Bike weight is based on median size, as sold, or the average of two median sizes.
- Gender: Kids’
This bike comes with Coast to Coast Support, which includes:
- 1 year of free adjustments (see more below)
- In-store bike assembly
- Pickup in store or curbside
- Bike experts available at 170+ bike shops
REI Co-op Members get more:
- 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)
More about our free adjustments:
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.
