Cycling UK Forum

hi does anyone know if carrera made any mtb bikes with 24 speeds as i have a vengeance but the frame is wide on the back it has a brass coloured thing where the handlebars are and when looking online i cant find a single bike that looks like mine in any way the specs for the bike state that it is onl a 16 speed however it has and extra fly wheel in the center where the pedals are as i got the bike second hand off a friend i dont know much a but the bike or where it came from however i do know he bought it an hasn't modified since he has owned it however im worried it could b a fake or perhaps a odd on the development line from carrera i would really like to know as i am taking it to halfords and im not sure they will fix it