Haibike SDURO HardFour 2.0

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  • The first ever eBike designed for kids
  • Yamaha PW drive 250W system
  • Yamaha LED display
  • Shimano Altus 9 speed gears
  • 24" wheels

With a smaller frame height of 34cm, a lightweight 6061 aluminium alloy frame and a high-performance Yamaha PW motor, the Haibike SDURO HardFour 2.0 2018 is perfect for shorter riders looking to hit the trails.

Although kids sized wheels, Haibike has built them with decent disc hubs and Rodi alloy, double wall, rims.

Powered by the Yamaha PW system, the HardFour 2.0 runs a 250W motor providing up to 280% assistance, but limited at 60Nm of torque and to 12.5mph. With a 400Wh battery as standard, family rides across all surfaces won't be cut short because of a lack of charge.

Three modes of assistance are available on the HardFour 2.0; Eco, Standard and High. To maximise concentration on the trails, Yamaha have fitted the bike with a simple LED display, providing information such as assistance mode, battery life and speed.

On the 2018 sDuro HardFour 2.0 we see the Tektro hydraulic disc brakes. Simple to use and fairly maintenance free, it's a good option on this 24" kid's bike. With the electric assistance, we want to ensure braking power remains solid.

The 24" Schwalbe Table Top tyres are both lightweight & durable in their construction, they allow a faster-rolling resistance while maintaining grip at the same time.

Technical Specifications
Weight 19.9 kgs
Frame type Crossbar
Wheels 28”
Battery Yamaha Lithium Ion, 400 Wh
Battery Capacity 400Wh (11Ah)
Motor System Yamaha PW 36V (70 Nm)
Display Yamaha LED
Frame aluminium 6061, HD Interface, quick-release 5 x 135mm, disc brake Post Mount
Forks SR Suntour XCR LO Lockout, steel spring, Travel: 63mm, steel steerer tube 1 1/8", quick release
Brakes Tektro M282, 160mm, 2-Kolben Scheibenbremse
Disk brake rotor 160/160mm
Gear system Shimano Altus M2000, 9 speed
Gear ratio 11-34 T
Gear shifter Shimano Altus M2000, rapidfire
Rear derailleur Sram PG920, 11-34 teeth
Crankset FSA, 32, steel
Chain KMC X9e
Front hub Haibike Components TheHub +
Rear hub Haibike Components TheHub +
Wheel rims Rodi FW Disc, with eylets, hollow rim, aluminium
Spokes Sapim Leader, black
Front Tyre Schwalbe Table Top Performance,
Rear Tyre Schwalbe Table Top Performance
Tyre size 57-507, 24" x 2.25"
Headset A-Head Tapered, ball bearing
Stem Haibike Components TheStem ++, A-head, Bar bore: 31.8mm, 12˚
Handlebar Haibike Components TheBar + Topflat 640mm
Grips XLC lock on grips Sport
Saddle Selle Royal Hello
Seat post Haibike Components The seat post ++, patent, 31.6mm, aluminium
Maximum speed 15.5mph
Maximum carrying capacity 80kgs
  • The first ever eBike designed for kids
  • Yamaha PW drive 250W system
  • Yamaha LED display
  • Shimano Altus 9 speed gears
  • 24" wheels
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