A bike comprising: • a rear wheel , • a low travel rear wheel suspension system , the low travel rear wheel suspension system comprising: • a seat tube , • a left side flexible chainstay and a right side flexible chainstay , each with its front end attached to the seat tube of said bike less than 250mm from the rotational axis of a bottom bracket shell of said bike, said bottom bracket shell defined to be a part of said seat tube , • a left side seatstay and a right side seatstay , each having its lower end areas connected to the posterior end areas of each of said flexible chainstays , and each of said seatstays extending upwards and forward with its other end connecting to the seat tube of said bike, • in the area where said flexible chainstays and said seatstays connect, a set of dropouts to rotably connect to a rear wheel of said bike, said dropouts can be integral parts of said flexible chainstays and/or said seatstays, or they can be mounted to said flexible chainstays and/or said seatstays through any release fastening elements, characterised in that • in the area of said seat tube where it connects to said seatstays , said seat tube is split up into a seat tube posterior part and a seat tube anterior part , said seatstays connecting to said seat tube posterior part , said seatstays not connecting directly to said seat tube anterior part , the area between said seat tube posterior part and said seat tube anterior part defining a seat tube cavity , said seat tube posterior part and said seat tube anterior part connecting to one another both above and below said seat tube cavity , where said seat tube posterior part and said seat tube anterior part are configured to allow flex of said seat tube posterior part towards said seat tube anterior part , and thus allow vertical flex of said flexible chainstays . • a rear wheel , • a low travel rear wheel suspension system , • a seat tube , • a left side flexible chainstay and a right side flexible chainstay , each with its front end attached to the seat tube of said bike less than 250mm from the rotational axis of a bottom bracket shell of said bike, said bottom bracket shell defined to be a part of said seat tube , • a left side seatstay and a right side seatstay , each having its lower end areas connected to the posterior end areas of each of said flexible chainstays , and each of said seatstays extending upwards and forward with its other end connecting to the seat tube of said bike, • in the area where said flexible chainstays and said seatstays connect, a set of dropouts to rotably connect to a rear wheel of said bike, said dropouts can be integral parts of said flexible chainstays and/or said seatstays, or they can be mounted to said flexible chainstays and/or said seatstays through any release fastening elements, • in the area of said seat tube where it connects to said seatstays , said seat tube is split up into a seat tube posterior part and a seat tube anterior part , said seatstays connecting to said seat tube posterior part , said seatstays not connecting directly to said seat tube anterior part , the area between said seat tube posterior part and said seat tube anterior part defining a seat tube cavity , said seat tube posterior part and said seat tube anterior part connecting to one another both above and below said seat tube cavity , <EOS>