Features
- As capable on cross-country trails as it is on gravel and pavement, the woom OFF AIR 4 kids’ mountain bike is ergonomically designed for growing riders to deliver good times that develop their skills.
- This bike is stable, responsive and equipped with a high-performance front suspension, durable components and tubeless-compatible rims and tires
- This model is updated with a dropper seatpost-ready frame design
- Ultralight aluminum frame with butted hydroformed tubes has a long wheelbase, sporty geometry and slack steering angle; a long wheelbase and low center of gravity aid balance
- Bend in the top tube makes it easy to dismount quickly; cable port on the seat tube allows for the addition of an internally routed dropper seatpost (not included)
- High-quality suspension fork provides comfort on the bumpiest terrain; fork can be adjusted to the rider’s weight
- With adjustable compression and rebound damping, the fork can be tuned for the terrain and the day’s conditions; lockout function is a bonus on climbs or flat roads
- 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 11–34-tooth 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 ergonomic brake levers designed for kids’ hands
- Quick-release seatpost clamp allows the streamlined, MTB-specific saddle to be easily adjusted while remaining secure
- Ergonomic contact points are made specifically for kids to provide a more comfortable ride
- Saddle is designed to accommodate their anatomy and biomechanics; tapered handlebar ends and grips are ergonomically designed for kids’ hands and with off-roading 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; 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
- OFF rims and Schwalbe tires are compatible to be set up as a tubeless system
- woom-specific molded chainstay protector
- Thru axle provides maximum torsional strength
- NOTE: Specs and images are subject to change based on component availability
Specifications
- Best Use: Mountain Biking
- Frame: AA 6061 aluminum
- Mountain Bike Style: Cross-country
- Bike Suspension: Front Suspension
- Fork: F1RST hydraulic air suspension fork with adjustable compression and rebound damping, plus lockout; 1 to 1-1/8 in. tapered steerer tube ; 100 x 15 mm thru axle; post mount for disc brake
- Fork Travel: 60 millimeters
- Crankset: Lightweight, forged aluminum 4.3 in. (110 mm) kid-specific cranks with narrow tread (Q-factor)
- Bottom Bracket: Thun
- Shifters: SRAM X5 trigger shifter
- Rear Derailleur: SRAM X5 rear derailleur
- Rear Cogs: 9-speed 11-32T cassette
- 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 Alex rims wheelset
- Front Hub: Front hub for disc brake; 14 gauge, 20h, 100 x 15 mm; 2x bearings without quick release
- Rear Hub: Rear hub for disc brake; 14 gauge, 20h, 135 x 12 mm; alloy cassette body, 4x sealed bearings without quick release
- Wheel Size: 20 inches
- Tires: Schwalbe Rocket Ron 20 x 2.25 in.
- Tire Width: 2.25 inches
- Handlebar Shape: Riser Bar
- Handlebar: Sandblasted and silver anodized aluminum; wide, lightweight and ergonomically adapted for more control; tapered ends to fit kids’ hands; width: 570 mm; rise: 20 mm
- Stem: Forged aluminum; 50 mm; +/-15 deg
- Seat Post: Anodized aluminum; 27.2 x 250 mm; insertion marks indicate the minimum insertion depth; quick-release seatpost clamp
- Saddle: Ergonomically designed to fit kids’ pelvis; nontoxic; side protection to lean against walls
- Pedals: Flat pedals; 2 x 6 pins; chromoly axle
- Headset: Fully integrated 1 to 1-1/8 in. headset; sealed industrial bearings
- Chain: X9 NPGY; 1/2 in. x 11/128 in. (90L)
- Weight: 21 pounds
- 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.
