It is about how good your energy is transformed into kinetic energy. there are cycles for SGD8888 (Aloeca brand) here in singapore. It is made up of carbon fibre - most rigid, stronger than steel and very very light weight compared to steel. it has 32 step gear, designed in such a way which is best for your spine, castings for break lever, very thin and tubeless tires - which means less friction, carbon ball bearings - again stronger than steel... when u ride it, it really can make you feel WOW
