Emily Hill was thrown to the ground as the bike zoomed off a footpath and into her as she got out of a car. The schoolgirl was rushed to hospital for 24 stitches to facial and head wounds because the smash shaved off her scalp down to the bone.
Doctors have warned she may need hair-follicle graft surgery following the accident, which police are now investigating.
The USB charged dirt bikes are marketed to offer “hours of near silent fun” but Emily didn’t hear it approach her in the cul-de-sac in Keighley, West Yorkshire, at around 6.10pm on June 11.
Yorkshire Live says some of the vehicles can reach speeds of 47mph – but only require a moped licence.
Emily’s devastated mum Leigh, 23, said: “We have all been through weeks of hell.
“Many people think electric bikes are safe, but we have learned the hardest way possible they are not.
“These bikes are dangerous. They are silent and can move as fast as a car.
“There are no checks that the people who buy or ride them will do so safely.”
The billing administrator, of Bradford, West Yorkshire, added: “They are targeted at teens and young adults, but they are not toys.
“They need to be made to make a humming sound like electric scooters and cars.
“Nothing prepares you for seeing your child’s skull.
“I felt sick.
“You vow to protect your children and then something awful like this happens and you haven’t been able to.”
Dad Sam, 27, a customer service supervisor, said: “Some of them can travel up to 50 miles per hour and be silent and that’s deadly.”
Sam and Leigh were picking up Emily and brother Charlie, three, from their aunt’s house when the accident happened.
The home was at the end of a cul-de-sac so Emily only looked left up the road, before stepping off the pavement, into the road, to go round to the car door.
But the dead-end road is adjoined by a footpath to Emily’s right – and a dirt bike rider allegedly drove through bollards, off the passing, onto the road, and into the girl.
Her tiny body was dragged along the road, before the driver stopped, it is alleged.
Sam said blood from her wounds soaked through his jumper in seconds, and they raced to hospital as she slipped in and out of consciousness.
He added: “It was a tense and very panicky drive.
“At one point she stopped crying and moving, then suddenly let out a big scream.
“I don’t know how we did it.
“She lost so much blood.”
She had 24 stitches at Airedale General Hospital, and after an overnight stay she was taken to Bradford Royal Infirmary for another night under observation.
Doctors said she might need hair-follicle graft surgery, to grow hair back on the front right quarter of her head, because the injuries may have permanently damaged her scalp.
The dirt bike driver, 22, was apparently riding a Sur-ron L1E electric bike.
There are two models with speeds of 30 or 47 miles per hour – both marketed as ‘nearly silent’.
A spokesperson from West Yorkshire police said: “A 22-year-old man has been reported for offences relating to a collision in Keighley on 11 June 2021.
“Enquiries into the incident are continuing.”