Description
The Woom OFF AIR 4 (Terra Coppa) is a lightweight 20″ trail bike designed for riders aged 6–8 (approx. 115–130 cm) who want extra comfort and control on rougher terrain. As part of our wider range of kids’ bikes, the OFF AIR 4 adds front suspension to the proven OFF platform. You can explore the full Woom range here to compare rigid and suspension options.

Confidence on Every Trail
The woom OFF AIR 4 is built for young riders who want more comfort and control on rough terrain. With its lightweight frame, air-sprung suspension fork, and confident geometry, it delivers smooth, stable performance on roots, rocks, and bumpy woodland tracks—perfect for riders beginning to explore real mountain biking.

Smooth, Adjustable Suspension
The OFF AIR 4 features an air-sprung suspension fork with adjustable rebound, allowing young riders to fine-tune their setup for comfort and control. It absorbs trail vibrations and bumps effortlessly, giving kids the confidence to ride faster and smoother on uneven terrain.

Hydraulic Disc Brakes for Reliable Control
Equipped with powerful hydraulic disc brakes, the woom OFF AIR 4 delivers predictable, responsive braking in all conditions. The child-specific levers ensure that even smaller hands can modulate speed precisely, helping riders stay safe on steep descents and technical tracks.

Precise 9-Speed SRAM Shifting
The 9-speed SRAM drivetrain provides young riders with the gear range they need to climb confidently and maintain speed on rolling trails. Smooth shifting helps kids stay in control while learning to master more technical riding and changing trail gradients.

Grippy Tyres for Off-Road Adventure
Fitted with Schwalbe off-road tyres, the OFF AIR 4 offers superb traction on dirt, gravel, and forest paths. The tread pattern enhances grip while keeping rolling resistance low, making climbing easier and cornering more stable for young trail riders.

Designed for Young Trail Riders
Every detail—from narrower handlebars to shorter cranks and a youth-specific saddle—has been designed around the needs of children aged 6 to 8. The balanced geometry keeps riders centred and in control, making it easier to navigate technical terrain with confidence.

Adjustable Flip-Flop Stem
The unique flip-flop stem lets riders fine-tune handlebar height as they grow, ensuring the perfect fit through several years of riding.
For riders who prefer a lighter rigid setup, the Woom OFF 4 offers similar geometry without front suspension. Taller riders may be ready for the Woom OFF AIR 5 or Woom OFF AIR 6 as they continue progressing.
Pair it with a Woom Helmet and Woom accessories for the complete setup. Fast UK delivery available.









