Haibike 2018 Hardfour Sduro 2.0 Child’s Electric Bike

Want your kid’s to keep up with you on your eMountain bike? This Haibike 24inch wheel junior electric bike is well enough equipped to cope with crazy hills, longer rides and fun summers of exploring with the parents. If you buy from our Electric Bike store in Shoreham we will give you 2 years Aftercare Servicing with the bike worth up to £750! Contact us for availability and further info.

I get a buzz from talking about the Junior Haibike Hardfour as it is an unbelievably cool electric bike for the money. I am eagerly awaiting the day my boy can fit one, as it will blow his mind! I only wish we had this technology when I was a child.

As eBikes are my passion, I love that they now design them for kids! Like a scaled down version of the adult Haibike models, this machine is powered with the Yamaha system. So cheeky parents riding alone can pinch their kid’s battery whilst they are at school, and take it with them as a secondary power source on a ride. (Just in case you needed another reason to justify buying your lucky child this eBike!)  The batteries are all cross compatible with other Yamaha powered Haibikes.

Haibike decided to make the Hardour using the high quality manufacturing techniques they have developed since 2010 to produce their adult ebikes. So the paint finish, quality of componentry and warranty match the rest of their range.

The special tweaks for Junior eBike riders include specially designed youth brake levers for smaller hands, hydraulic brakes too for effective braking with less effort. The suspension forks are also designed for a smaller rider, so they will actually benefit from the dampening on rougher terrain.

Power levels are slightly tamer to give assistance up to 12 mph instead of the adult bikes that can peak just over 15mph. This is still pretty fast considering the bike can exceed this speed downhill or on the flat but without motor assistance. As with all of our eMountain bikes this bike delivers power instantaneously as you pedal, so the rider is in complete control of the power in three ways: the gear the bike is in, the power level (high, med, low and off) and the amount of pressure on the pedals.

Manufacturer’s Specs

  • Frame aluminium 6061, HD Interface, quick-release 5 x 135mm, disc brake Post Mount

  • Drive unit Yamaha PW-System, 250W, 20km/h

  • Display Yamaha LED

  • Battery Yamaha Lithium Ion, 400 Wh

  • Charger Yamaha quick charger 4A

  • Fork SR Suntour XCR LO Lockout, steel spring, Travel: 63mm, steel steerer tube 1 1/8″, quick release

  • Shifting system Shimano Altus M2000, 9 speed

  • Gear lever Shimano Altus M2000, rapidfire

  • Rear sprocket Sram PG920, 11-34 teeth

  • Chain KMC X9e

  • Chain ring FSA, 32, steel

  • Chain guide Nylon directmount

  • Brake lever Tektro HD-M282, aluminium

  • Front brake Tektro HD-M282, 160mm, hydraulic disc brakes

  • Rear brake Tektro HD-M282, 160mm, hydraulic disc brakes

  • Tyres Schwalbe Table Top Performance, 57-507

  • Rims Rodi FW Disc, with eylets, hollow rim, aluminium

  • Front wheel hub Haibike Components TheHub +

  • Rear wheel hub Haibike Components TheHub +

  • Spokes Sapim Leader, black

  • Handlebar Haibike Components TheBar + Topflat 640mm

  • Grips XLC lock on grips Sport

  • Stem Haibike Components TheStem ++, A-head, Bar bore: 31.8mm, 12˚

  • Head set A-Head Tapered, ball bearing

  • Saddle Selle Royal Hello

  • Seat post Haibike Components The seat post ++, patent, 31.6mm, aluminium

  • Pedals Wellgo LU984DU

  • Weight 19.9kg

  • Total perm. weight 80kg

  • Wheel size 24″


Sizing and where to buy?

Please visit our eBike Sussex store with the child that will be riding the bike for our sizing advice. If it is to be a surprise please get an inside leg measurement and call us for help with sizing.


Yamaha Certified eBike Specialist

eBike Sussex