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Woom – OFF AIR 4 20inch Mountain Bike in Black

Ultralight 20″ mountain bike with air suspension fork, 9-speed gearing and hydraulic disc brakes. Designed for confident riders aged 6–8 (118–130 cm).

£955.00

Woom

Free Set of Spoke Lights With Every Woom Bike.

Product Details

Information

Description

Side view of the Woom OFF AIR 4 kids mountain bike.

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.

Side view of the Woom OFF 6 kids mountain bike.

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.

Disc brake rotor close-up on the Woom OFF 6.

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.

SRAM X5 trigger shifter on the Woom OFF 6.

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.

Tyre tread of Woom OFF 6 showing Schwalbe Rocket Ron pattern.

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.

Close-up of the Woom OFF 6 saddle.

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 on Woom OFF 6.

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.

Product Specification

Gender Unisex
Cassette 11-32T 9 Speed
Rear Derailleur SRAM X5
Brakes Promax Hydraulic Disc Brakes with 160mm rotors
Frame 6061 T6 with butted and hydroformed tubes
Shifters SRAM X5 Trigger Shift
Headset Fully integrated 1"- 1 1/8"
Fork Air suspension fork with 60mm travel, adjustable compression and rebound damping with lockout.
Crankset Alumium 110mm
Chainring 28T
Handlebar 600mm wide for stability and control
Tyres 20 x 2.25″ Schwalbe Rocket Ron
Rims Superlight woom OFF DISCO TEC double-chamber aluminum rims
Stem 50mm +/-15 degree flip-flop aluminium

Additional information

gtin

9120083726978

Brand

Woom

Colour

Black

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Sporting Goods > Outdoor Recreation > Cycling > Bicycles

e-Bike Specialists

Why Choose Us?

Whether you’re a seasoned e-bike enthusiast or a nervous novice looking for your first e-bike – we’re here to help and guide you through the options, we even offer part exchange.

Our expansive range of bikes has been selected to suit all levels of cycling proficiency and differing needs, from family cargo bikes to adrenaline- inducing e-mountain bikes.

We want to make choosing the right e-bike a pleasant and relaxed experience, so you can even try before you buy with a test ride along the local country lanes. The surrounding scenery alone makes a visit to our shop well worthwhile.

The Best Brands

A friendly, family-owned, rural business that stocks some of the best e-bike brands in the country, and is the North West’s leading retailer of WOOM kids’ bikes. You’ll find a vast and industry-leading range of e-bikes available, and all the specialist knowledge to back it up.

Friendly Service

We strive for repeat business, it’s in our interest to make sure you get the best service without any annoying pushy sales talk. Ribble Valley E-Bikes is based in the stunning Forest of Bowland National Landscape; an ideal place to get to grips with a new bike. So why not try before you buy?

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Spread the cost with flexible finance

At Ribble Valley E-Bikes, we understand that many customers may prefer the option of paying with finance, that’s why we’re proud to be partnered with established credit brokers, Ideal4Finance, to enable you to spread the cost of your purchase with manageable

monthly payments.

The following finance options are available, always subject to the lender’s assessment:

  • Fixed finance at 9.9% APR over 6 or 12 months
  • Fixed finance at 15.9% APR over 24, 36, 48 or 60 months

A deposit may be required, and we will agree the deposit amount with you before you begin the application process.

Ideal4Finance help thousands of people secure finance for their purchases. They use only reputable lenders and are Trustpilot-rated ‘Excellent’.

You can apply online or by telephone and decisions are made quickly. The final decision is based on your individual circumstances, including your personal credit profile, how much you want to borrow and the loan period.

Here is a representative example of £5,000 purchase, with a 25% deposit, paid over five years (60 months) at 15.9% APR.

Purchase amount £5,000
Deposit amount £1,250
Total credit £3,750
Interest rate 15.9% (fixed)
Loan duration 60 months
Monthly repayment £88.91
Total repayable £5,334.66
Total cost £6,584.66.

* Please note the representative example provides an indication only and the exact details will be provided at the application stage.

There are risks involved in taking out a loan and you should ensure you can make all payments on time and in full; failure to do so can lead to financial difficulties and have a negative impact on your credit score.

If you’re ready to apply, complete your order and choose ‘Pay with Finance’ at checkout. Once the order is completed, click the ‘Apply for Finance’ button to start your application.

If you need support with your application, please call Ideal4Finance on 020 3617 4647 (Mon to Fri, 9am to 5pm).

Ribble Valley E-Bikes Ltd is an Introducer Appointed Representative of Ideal Sales Solutions Ltd, t/a Ideal4Finance. Ideal Sales Solutions Ltd is a credit broker and not a lender (FRN 703401). Finance available subject to status. The rate offered is always provisional and will depend upon your personal circumstances, the loan amount and the term.

How to Apply

1
Add your chosen bike to the cart.
2
Choose ‘Pay with Finance’ at checkout.
3
Complete finance application.

Once your application has been approved, we’ll contact you to finalize the details and ship your new bike.

Finance repayment calculator

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APR

is an Introducer Appointed Representative of Ideal Sales Solutions Ltd, t/a Ideal4Finance. Ideal Sales Solutions Ltd is a credit broker and not a lender (FRN 703401). Finance available subject to status. The rate offered is always provisional and will depend upon your personal circumstances, the loan amount and the term. Representative example: Representative based on a loan of £0 repayable over 0 months at an interest rate of pa (fixed). Monthly repayment of .
Total amount payable £0.

Please note: the finance calculator provides only a guide and the exact amounts will be confirmed during the application process.
While the finance calculator aims to be as accurate as possible, the monthly payments and interest paid may differ at the application stage. This is because the lender might round figures differently or take a larger first or final payment, which could affect the monthly cost.