SKU: 32795307840

OFF AIR 4 (20")

Sale price$539.55 Regular price$599.50
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 19 - Jul 24

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Description

OFF AIR 4 (20")The newly upgraded 20" woom OFF AIR 4 will take its Rider beyond the beginning stages of their mountain biking journey. Stable, responsive, and equipped with a high performance front suspension system, durable components, and tubeless compatible rims and tires, it provides best in class value in its category. Off road capable and kid tested, this mountain bike was ergonomically designed for growing bodies and developing abilities. The woom OFF AIR 4

The newly upgraded 20" woom OFF AIR 4 will take its Rider beyond the beginning stages of their mountain biking journey. Stable, responsive, and equipped with a high-performance front suspension system, durable components, and tubeless-compatible rims and tires, it provides best-in-class value in its category. Off-road capable and kid-tested, this mountain bike was ergonomically designed for growing bodies and developing abilities. The woom OFF AIR 4 is more than capable on cross-country trails yet, uncompromising on gravel, pavement, or wherever the spirit leads your Rider.

FEATURES:

  • Ultralight frame: The premium aluminum frame is lightweight with a sporty geometry, making it safe and intuitive for your child to handle on their off-road adventures. The kink in the top tube means it's easy to dismount quickly, so your child can get off the saddle safely even in the trickiest situations.
  • Premium suspension fork: Fine-tune the air suspension fork to your rider's weight for optimal shock absorption, ensuring constant wheel contact and unwavering control, no matter how rugged the trail. You can also adjust the rebound and compression too – and activate the lockout function when riding on the road.
  • Ultimate design for young riders: With a low center of gravity, flat steering angle and long wheelbase, the sporty frame design provides a perfectly smooth and agile ride – and that means secure handling, good balance and a whole lot of fun for your child.
  • Powerful disc brakes: The powerful disc brakes are easy to modulate and reliable at all times – even when the weather is wet and the ground is muddy. Teamed with the child-specific, reach-adjustable brake levers, they allow your child to stay in full control in every situation.
  • Precise 9-speed gearing: Shifting is smooth and precise on any terrain thanks to the easy-to-operate SRAM X5 gearing. Kids can easily work the trigger shifter with their thumbs, with the reliable Exact Actuation™ gear technology ensuring speed and precision every time.
  • High-quality drivetrain: Optimum power transfer and smooth pedaling without dropping the chain? Not a problem thanks to the lightweight, child-specific cranks and the narrow-wide chainring that keeps the chain firmly in place even on the roughest of terrains. The cassette’s wide gear range keeps your child moving on flat stretches and steep climbs alike.
  • Grippy, tubeless-ready tires: The high-quality Schwalbe tires provide the perfect balance between low rolling resistance and good grip. With Tubeless Easy technology and tubeless-ready rims, it’s a straightforward transition to go tubeless and benefit from even more grip and comfort.
  • Age: 6 - 8 years

SPECS:

Frame
  • Frame material: lightweight, high-quality 6061-T6 aluminum with butted and hydroformed tubes
  • 20″ wheels
  • Easy-access low top tube to assist dismounting
  • Long wheelbase and low center of gravity to aid balancing
  • Featuring woom-specific molded chainstay protector 
Fork
  • RST SPEX hydraulic air suspension fork with 60 mm travel, adjustable compression, and rebound damping, plus lock-out
  • 1 – 1 ⅛″ tapered steerer tube
  • 100 x 15 mm thru axle
  • Post mount for disc brake
Gears
  • 9 speeds
Crankset/Chainring
  • Lightweight, forged aluminum, 4.3" (110 mm), kid-specific cranks with narrow tread (Q-factor)
Cassette
  • Cassette with 11-32 teeth in the back
Rear Derailleur
  • SRAM X5 rear derailleur
Shifters
  • SRAM X5 trigger shifter
Brakes
  • Hydraulic disc brakes by Promax
  • Rotor diameter front/back: 140/140 mm
  • Ergonomic brake levers designed for a child’s hands
Handlebar
  • Wide, ergonomically adapted and lightweight aluminum bars for more control
  • Tapered end to fit a child’s hand
  • Sandblasted and silver anodized
  • Width: 570 mm
  • Rise: 20 mm
Stem
  • Forged aluminum
  • CNC-machined
  • Handlebars attached via two clamps
  • Rise/drop: +/-15° with flip-flop design to adjust the handlebar height
  • Length: 50 mm
Seatpost
  • 27.2 x 250 mm
  • Anodized aluminum seatpost with insertion marks that indicate the minimum insertion depth
  • Quick-release seatpost clamp
Saddle
  • Ergonomically designed to fit a child’s anatomy
  • Streamlined, mountain-bike-specific saddle design 
  • Side protection to lean against walls
Hubs
  • Aluminum hubs with sealed industrial bearings
Rims
  • Tubeless-compatible Alexrims wheelset
  • Thru axles for maximum torsional strength (100 x 15 mm front and 135 x 12 mm rear)
  • 20 G14 spokes, double-crossed spoking
  • Aluminum nipples
Tires
  • 20 x 2.25″ Schwalbe Rocket Ron with ADDIX SPEED rubber compound
  • Quality mountain bike tires with low rolling resistance, maximum grip, good shock absorption, and excellent durability
  • Presta valves, tubeless conversion ready
Extras N/A
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 32795307840

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4.2 ★★★★★
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Baibhav Bhattarai
Draper, US
★★★★★ 5
Doggy Delight
Flavor Name: Beef, Size: Medium
Ever felt like your dog’s chew toys are on the fritz, ending up shredded like yesterday’s sandwich? The SPOT Bam-bones PLUS T Bone is here to save the day, offering a durable and tasty solution for aggressive chewers and teething puppies alike. These bamboo fiber and nylon chews are like the super-tough treats your dog dreams of, providing hours of gnawing joy without the splintering mess. My bulldog, who treats his chew toys like they’re part of a survival game, has found his perfect match in these T Bones. The beef flavor is irresistible, making them a favorite among picky pups and ensuring they stay engaged without turning into edible confetti. The 6-inch size is perfect for keeping his jaws busy without overwhelming his mouth – a win-win for both of us. The non-splintering design is a blessing, preventing any painful encounters with broken chews and keeping our home safe from unexpected trips to the vet. Plus, the durable construction means these chews last longer than my patience during a doggy tantrum – and that’s saying something! However, the T Bones can sometimes feel like they’re too tough, requiring a bit of extra chewing to fully enjoy – turning every chew session into a mini workout for your dog’s jaws. Additionally, the price point is slightly higher than standard chews, but the durability and quality make it worth every penny. Overall, the SPOT Bam-bones PLUS T Bone is a fantastic choice for dog owners looking to provide their pets with a long-lasting and enjoyable chew experience. It’s tough, tasty, and built to withstand even the most enthusiastic chewers. A solid 5-star rating for its durability and flavor, with a tiny star lost to its occasional toughness challenges.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 23, 2024
A
Verified Purchase
Amazon Customer
Houston, US
★★★★★ 5
The Ultimate Solution for Power Chewers!
Flavor Name: Beef, Size: Medium
I have a Pitbull mix who can usually destroy "tough" toys in minutes, but the Bam-Bones Plus is a total game-changer. The bamboo and nylon blend is incredibly dense; it satisfies that natural urge to chew without splintering like real wood or falling apart like rubber. It wears down slowly and safely, giving my dog weeks of use rather than minutes. ​Smart, Functional Design ​The T-bone shape is brilliant because of the "paw-grip" base—it makes it so easy for my dog to hold it steady while she works on it. I’ve also noticed her teeth looking much cleaner since we started using this, as the raised textures act like a natural toothbrush. Plus, the infused beef scent keeps her interested much longer than a plain nylon bone ever could. ​Final Verdict ​This is a must-have for any owner of a large or aggressive chewer. It’s safe, long-lasting, and provides excellent mental stimulation.
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Reviewed in the United States on April 16, 2026
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Verified Purchase
Lisa D.
Lowell, US
★★★★★ 4
Fantastic Durable Chew Toy That My Dog Loves!
Flavor Name: Beef, Size: Medium
Absolutely thrilled with this dog chew toy! It’s extremely tough and durable — perfect for aggressive chewers and keeps my pup entertained for a long time. The bamboo fiber and nylon design feels sturdy yet gentle on the teeth, and it even helps with dental hygiene by massaging gums while he chews. My dog goes crazy for this bone and it lasts way longer than other chew toys we’ve tried. Great quality and great value — highly recommend for any dog
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Reviewed in the United States on January 17, 2026
A
Verified Purchase
Angie F.
Battle Creek, US
★★★★★ 5
Great stimulation for active chewers!
Flavor Name: Peanut Butter, Size: Large, Flavor Name: Peanut Butter, Size: Large
"Long lasting chews" never make it past 5 minutes in mouth of my Golden Retriever, but this one will! He immediately started chewing on it and barely made a dent. Love that this product is safe, clean, and enjoyable for my boy. Highly recommend!
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Reviewed in the United States on May 30, 2026
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Verified Purchase
Amazon Customer
Bozeman, US
★★★★★ 5
100% Puppy-Approved
Flavor Name: Beef, Size: Small
My little fur baby absolutely LOVES this!! ❤️ He immediately got the zoomies when I gave it to him. 🤣 It's his new favorite chew toy and keeps him occupied for long spans of time while inside or outside of his crate. Very durable, smells pleasant, and is the perfect size for my small puppy (he is currently 10 lbs and I got him the small one). Previous chew toys that I purchased were too large/heavy for him to pick up, but this one is lightweight and perfect! I highly recommend! 🙌🏾
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Reviewed in the United States on May 23, 2026

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