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Hai Bike
SDuro HardFour 4.0 E-Bike 24" Wheel

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Haibike’s SDuro HardFour 4.0 E-Bike 24” Wheel has smaller wheels and smaller geometry overall to accommodate kids and smaller humans. Its performance is on par with adult e-bikes with a Yamaha 500W drive unit, but assistance is limited to 12mph for safety.


  • Frame Material: aluminium 6061, Gravity Casting Interface, Hydroformed, Tapered head tube.
  • Drive Unit: Yamaha PW-System, 500W.
  • Display: Yamaha LED.
  • Battery: Yamaha Lithium Ion, 400 Wh.
  • Charger: Yamaha quick charger 4A.
  • Fork: SR Suntour XCR LO Lockout, air, travel: 63mm, aluminium steerer tube 1-1/8".
  • Rear Shock: N/A.
  • Headset: A-Head Tapered, ball bearing.
  • Shifters: Shimano Acera M3000, 9-speed.
  • Front Derailleur: N/A.
  • Rear Derailleur: N/A.
  • Crankset: N/A.
  • Chainring: FSA, 32, steel.
  • Bottom Bracket: .
  • Cassette: Sram PG920, 11-34 teeth.
  • Chain: KMC X9e .
  • Brakeset: Tektro HD-M286, 160mm, hydraulic disc brakes.
  • Handlebar: Haibike TheBar + Topflat 640mm.
  • Stem: Haibike TheStem +, A-head, bar bore: 31.8mm.
  • Saddle: Selle Royal Hello.
  • Seatpost: Haibike The seat post ++, patent, 31.6mm.
  • Wheelset: 24".
  • Rims: Alexrims MD21, aluminium.
  • Hubs: XLC aluminium disc, QR.
  • Front Axle: Quick-release.
  • Rear Axle: Quick-release.
  • Tires: Schwalbe Table Top Performance, 57-507.
  • Weight: 18.9kg.
  • Manufacturer Warranty: 5 year warranty on frame.

Returns: This product is overweight and/or oversize and does not qualify for our fixed rate return shipping label. If you need to return this item, we can offer a return shipping label at our discounted shipping rates, or you can arrange for your own return shipping.

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