The best full suspension kids mountain bikes - 2019

With full suspension becoming more popular on adult mountain bikes, it's not surprising that there is a growing demand for kids sized full suspension MTB's.  In this article we're taking a look at some of the best full suspension kids mountain bikes with 26" wheels or bigger that are currently avaialble for older kids and teens (about aged 10 plus) at the moment. As you'll quickly see, they don't come cheap - but in each case you're getting a lot of bike for your money.

Does my child need a full suspension mountain bike?  

Now, some will argue that your Cycle Sprog should be learning their skills on a fully rigid or hard tail mountain bike before moving onto the comparative luxury of full suspension later in life (when the bones start creaking and muscles need warming up before a ride!).  Others will retort that if it means their Cycle Sprog can get up and down whatever the trail throws at them, then it's a great thing, and means your family mountain biking can reach exciting new levels (assuming you can keep up!).

The best full suspension kids mountain bikes 

Before we start - let's just ask why a pre-teen or teenager shouldn't just jump on an adult mountain bike.  Yes, it's possible to get an XS or S adults MTB, but often they're not designed with kids in mind. Those aged between about 10 and 14 tend to have smaller hands, narrower shoulders and aren't as strong as adults, so need a bike designed specifically for them.  Here's our pick of those full suspension kids mountain bikes designed with the junior rider firmly in mind.

Deal of the Day

Cube Stereo 140 Youth MTB 

Tredz currently have this on offer with £200 off, bringing it down to £1499!!

PLUS - BUY FROM TREDZ - enter SPROG10 at checkout to get a further 10% off bringing the price down to £1349!!!

Cycle Sprog reviewed and recommended

Cube bikes have a broad range of bikes, such that pretty much there's something for everybody, regardless of age or type of riding. They've recently added to their collection the Cube Stereo 140 Youth - a full suspension 27.5" wheel bike that comes in three different frame sizes to cater for most pre-teens and teenagers.

Cube Stereo Youth 140

The Cube Stereo 140 Youth is a proper off road tool with SR Suntour Aion forks that give 150mm of travel at the front, while suspension duties at the rear are provided by an SR Suntour DUAir shock giving 140mm of travel. There's a RaceFace 1x chainset with an 11 speed SRAM NX drivetrain with great gearing options. Magura provide the braking with 180mm rotors giving plenty of bite!

We've been lucky enough to have been testing one of these bikes out this year, and have been very impressed. You can read our review to see what 12 year old Tester N thought of the Cube Stereo 140 Youth here.

Check sizing availability and price of the Cube Stereo Youth:

Whyte T-120 (RRP £1599)

Whyte have invested heavily in the kids and youth market, giving parents credible alternatives at existing wheel sizes but also looking for gaps in the market where models for kids don't really exist. From past experience, they certainly create top quality bikes that fulfill the needs of riders and the T-120 looks to be no exception. They also build their bikes for use in UK conditions too, which is no bad thing.Whyte T-120 youth full suspension mountain bike

Based on the T-130 frame, an award winning full suspension enduro machine, the T-120 comes as a 13" frame fitted with 26" wheels as Whyte believe that provides a better balance than fitting 650b (27.5") wheels. Size-wize, the Whyte website gives a recommended rider height for the T-120 of between 135 – 150cm.

As you would imagine, the spec is pretty high with a 10 speed gear setup using Shimano's very well respected Deore range for both the shifter and rear mech. The chainset is a Whyte own brand with 28 teeth and suitably sized crank arms of 165mm. The rear cassette comes from SunRace and has a broad spread of 11-46 teeth over it's ten sprockets. Braking should also be on the button with Tektro Orion 4 pot calipers clamping down on 180mm rotors.

Whyte have set a recommended retial price of £1599 for the T-120.


Marin Hawk Hill Jr MTB (24" and 26" in one) (£1,395)

Before you baulk at the thought of paying over 1,300 notes for a kids mountain bike, take a look at the large clearances on this bike, and the fact that it's got rear suspension. Yes, the Marin Hawk Hill JR is a top of the range kids 24" wheel full sus MTB, that is also able to take 26" wheels. So you're effectively getting two full suspension mountain bikes for the price of one (albeit you do need to get your hands on a set of 26" wheels - reasonably cheap these days!)

The Marin Hawk Hill is a 120mm travel rig, using X-Fusions excellent Velvet fork with thru-axle and their O2 Pro shock at the rear which, being air, allow for precise tuning to take account of varying weights at the age range the bike is intended for. The frame on the Hawk Hill Jr is lightweight T6061 aluminium with internal routing for the rear mech and also for a dropper post should you wish to fit one.

Marin Hawk Hill Jr

The Marin Hawk Hill JR is based around the best selling adult bike of the same name, just with scaled down components for a younger rider.  With an 11-Speed SunRace 11-46T cassette this bike will get up most hills without a problem, and the air-sprung front X-Fusion Velvet RLC 26" front suspension gives 120mm of cushioning travel when making your way back down.

All in all a great looking bike with the added functionality of being able to grow with your child.

In terms of the upgrade to 26" wheels we have confirmed with Marin that they need to have the following axle spec:
Front Wheel - 100 x 15 thru-axle
Rear Wheel - 135mm open dropout that can be upgraded to 142 x 12 thru-axle if required

BUY NOW: The Marin Hawk Hill Jr at Tredz for £1,395

DON'T FORGET - ADD SPROG10 at the checkout to get an additional 10% off!


Mondraker Factor (RRP £2,099)

Mondraker is based in Alicante, Spain and has been making full on mountain 'bicicletas' since 2001. They produce the Factor 24 and 26, and take everything they've learnt and boiled it down to a size suitable for pre-teens and teenagers.

Mondraker Factor 24

The Factor 24 is not a downhill monster of a bike but is set up with a more XC bias having a RockShox Monarch R shock at the rear and a RockShox Gold RL Solo Air fork giving 80mm of travel.

The specification for the Factor 24 shows that Mondraker have fitted Shimano's MT501 4 piston brakeset to the bike, which should give supreme braking power.

There's also a tasty drivetrain too for this updated 2020 model, with a SRAM Eagle 12 speed groupset being used for the crank, shift lever and rear mech, with a massive 11-50T cassette out back. We've had good experiences with SRAM groupsets, so it's reassuring to see the Eagle being used here.

It's also interesting to note that Mondraker has made use of branded high-quality components throughout, such as the OneOff bars and stem and saddle from SDG, rather than using in-house products. But then again, when you're paying a significant sum of money you do, quite rightly, expect more than a smattering of top kit for your investment.




Norco Fluid FS 26 (RRP £1225) 

Currently out of stock

Hotfooting it out of British Columbia is the Norco Fluid FS 26 that is a full suspension kids bike for ages 10 and up. It's fitted with a RockShox Silver air fork to give 120mm of travel at the front and complemented by a Rockshox Monarch R shock at the rear.

Norco Fluid 26 FS - full suspension kids mountain bikes

There's a decent 10 speed drivetrain using Shimano's excellent Deore range for the shifter and rear derailleur, while SR Suntour provide the 30 tooth 1X chainset that marries up to a SunRace 11-42 cassette.

Braking comes courtesy of a Tektro hydraulic system with short reach levers and 160mm rotors.

The Norco Fluid FS 26 also comes ready fitted with a dropper post with remote lever.




If we've missed out your favourite full suspension kids mountain bikes, then do please let us know in the comments section below. We'd also love to hear which bike you bought and what your Cycle Sprog thinks of it.

Other posts you should check out whilst you're here:

Affiliate disclosure:  Here at Cycle Sprog we are trying to make a living out of writing good quality articles about cycling with kids. In order to do this, we belong to a number of affiliate marketing schemes, which means that if you make a purchase after clicking on some of the links on this page, we may get a small commission, which helps us keep going. Thanks for your support.

This article was first published in December 2018 and updated in March 2019 to reflect availability of the bikes featured.

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