The brake lever kit includes both the front and rear brake levers. Both levers are adjustable. Plus, in addition to the lever-knob distance control system, positioned above for greater accessibility, they also have a sliding system that allows the lever to be adjusted in length. Furthermore, the kit includes two technopolymer inserts to be used to eliminate the gap created when the lever is at its maximum extension (up to 20 mm), thus preventing glove wear.