Boardman JNR 24

About the Boardman JNR 24

Getting a child onto two wheels is one thing; keeping them there is another. The Boardman JNR 24 tackles that second challenge head-on, blending a properly sorted spec with a frame that won't hold back a rider who's outgrown stabilisers and is ready to explore beyond the park. Built around triple-butted aluminium with smooth welds and a geometry borrowed from Boardman's adult hybrid range, this isn't a toy dressed up as a bike - it's a scaled-down machine that respects the fact young riders deserve kit that works.

At 10 kilograms, it's light enough for an eight-year-old to wrestle onto a bike rack yet sturdy enough to survive the inevitable tumbles and kerb hops. The 9-speed Microshift drivetrain gives a proper spread of gears - 11 to 42 teeth at the back, paired with a sensible 32-tooth chainring - so climbs don't become a grind and flat stretches don't leave little legs spinning into oblivion. Tektro V-brakes with short-reach levers mean confident stopping without the hand cramp, and those rack and mudguard mounts signal that this bike is built for real rides, not just sunny laps of the cul-de-sac.

Boardman's 'Forwards, Faster, Further' mantra isn't marketing fluff here; it's baked into the design. The JNR 24 is aimed squarely at riders aged eight to eleven, with an inside leg of 63 to 72 centimetres, and it's pitched to do everything from the school run to canal-path adventures and the occasional grassy shortcut. It's not trying to be a mini downhill rig or a junior road racer - it's a hybrid in the truest sense, versatile enough to grow with a rider's confidence and curiosity.

Boardman JNR 24 geometry

Boardman hasn't published the full geometry chart - no reach or stack figures, no head-angle numbers - but the riding position tells the story. The 540-millimetre handlebar width and 50-millimetre stem with a ten-degree rise create an upright posture that balances visibility with control. You're not hunched over like a time-triallist, but you're not bolt-upright either; it's a stance that lets young riders see what's ahead, steer with precision, and shift their weight when the path gets lumpy.

The 24-inch wheels sit in a sweet spot for this age group: big enough to roll over roots and potholes without drama, small enough to keep the bike nimble and the standover height manageable. The aluminium fork with its chromoly steerer adds front-end stiffness without weight penalty, and the overall wheelbase - though unquoted - feels stable enough to inspire confidence on descents yet short enough to flick through tight corners. When a child's bike geometry works, you don't notice it; you just see a grin and a willingness to ride further. That's what Boardman has dialled in here.

Component choices & upgrades

The stock build is already well sorted. Microshift's 9-speed Advent drivetrain is reliable, easy to service, and offers a gear range that'll handle most terrain a young rider will encounter. The Tektro TS325A levers and 855 AL-EN V-brake calipers deliver predictable stopping power, and the short-reach lever design means small hands can actually reach and modulate the brakes - a detail that matters more than any exotic caliper material. Vee Rubber Speedster tyres in 24 by 1.5 inches roll fast on tarmac and grip well enough on dry trails; they're a sensible middle ground.

Upgrades? Most riders won't need them. If your child is racing or riding in genuinely muddy conditions week in, week out, you might consider swapping to knobbier tyres - something with a more aggressive tread pattern - but the Speedsters are fine for mixed use. The saddle is junior-specific and comfortable; the Wellgo pedals are sturdy enough for flat shoes or light clips if you're coaching technique. The only real limitation is the V-brakes: they work well in the dry and adequately in the wet, but they'll never match the all-weather bite of disc brakes. That said, for the target rider and use case, they're more than sufficient, and they're simpler to adjust and maintain.

If you're tempted to tinker, focus on fit rather than performance. A slightly wider or narrower handlebar can fine-tune comfort, and a different saddle might suit a particular rider's anatomy better. But resist the urge to bolt on expensive kit - this bike's strength is that it's already complete, and the money saved can go towards the next size up when growth spurts strike.

Where the Boardman JNR 24 excels

This bike is outstanding at being a first proper bike - the one that takes a child from tentative rides around the block to confident weekend adventures. It's brilliant for school commutes, especially with mudguards and a rack fitted, and it's equally at home on canal towpaths, forest fire roads, and the occasional grassy field. The wide gear range means young riders can tackle hills without walking, and the light weight means they can actually manoeuvre the bike when they're off it - lifting it over a stile, wheeling it through a gate, or hoisting it onto a car rack.

It also does well on longer family rides where the terrain is mixed: a bit of road, a bit of gravel, a bit of singletrack. The upright position keeps fatigue at bay, and the stable geometry inspires the kind of confidence that lets a child focus on the ride rather than wrestling the bike. It's not a race machine, so don't expect it to keep up with a lightweight road bike on a fast club run, and it's not a full-suspension mountain bike, so technical descents with roots and rocks will demand more skill and caution.

Where it's not ideal: genuinely aggressive off-road riding. If your child is already hitting jump lines and steep, rocky trails, they'll outgrow the V-brakes and rigid fork quickly. Similarly, if you're chasing speed on road rides, the hybrid tyres and upright position will feel draggy compared to a dedicated junior road bike. But for the vast majority of young riders - those building skills, exploring new routes, and simply enjoying being on two wheels - the JNR 24 is spot-on.

Boardman JNR 24 FAQs

What is the weight of the Boardman JNR 24?
The complete bike weighs approximately 10 kilograms, which is light enough for a child to handle confidently but robust enough to withstand everyday use. Some earlier specs listed 9.6 kilograms, likely reflecting minor component variations, but 10 kilograms is the current figure.

What age is the Boardman JNR 24 suitable for?
It's designed for riders aged eight to eleven years, with a height range of 127 to 144 centimetres and an inside leg measurement of 63 to 72 centimetres. Always measure your child's inside leg rather than relying solely on age, as growth rates vary widely.

What kind of brakes does the Boardman JNR 24 have?
It's equipped with Tektro V-brakes - rim brakes that offer reliable stopping power in dry conditions and adequate performance in the wet. The short-reach levers are designed specifically for smaller hands, making them easier to operate and modulate than standard-length levers.

Can you fit mudguards and a rack to the Boardman JNR 24?
Yes, the frame has dedicated rack and mudguard mounts, making it straightforward to add practical accessories for commuting or touring. Bottle cage mounts are also present, so hydration on longer rides is covered.

What is the gear range on the Boardman JNR 24?
The 9-speed Microshift drivetrain pairs a 32-tooth chainring with an 11-42 tooth cassette, giving a wide range that covers steep climbs and flat stretches without overwhelming a young rider with too many gears. The thumb shifter is intuitive and easy to operate.

Is the Boardman JNR 24 good for off-road riding?
It handles light off-road terrain - gravel paths, forest tracks, grassy fields - very well, thanks to its stable geometry and decent tyre grip. It's not designed for technical mountain biking with roots, rocks, and steep descents, but for exploring bridleways and canal paths, it's more than capable.

How does the Boardman JNR 24 compare to other 24-inch kids' bikes?
It sits in the middle of the pack for weight and price but punches above its class for spec quality and versatility. The 9-speed drivetrain and practical mounts give it an edge over simpler single-speed or 7-speed rivals, and the lightweight aluminium frame keeps it competitive with pricier options from specialist brands.

What is the inside leg measurement for the Boardman JNR 24?
The recommended inside leg range is 63 to 72 centimetres. Measure your child's inside leg by having them stand barefoot with their back against a wall, then measure from the floor to the top of the inside leg - this gives a more accurate fit than height alone.