I have a relatively new furia sm... its a great bike as i only use it for running around and getting to college... i have had the bike for about 4 months now and have had no problems whatsoever... The bike hasnt been derestricted but let alone it does about 70mph... but only goes up 2 40mph on the clock... it just keeps accelarating...The bike has stylish looks and dont i no it... lol