SRT kit for mounting handlebar caps stabilizer, compatible with all contappressi aftermaket or with expansion system series. This isideal kit in case you have not replaced the handlebars and the handlebar caps stabilizer, in this way the original equipment can be adapted to the new handlebar. The iskit consisting of: of grommets couple in 12/13 mm PTFE of grommets couple in 17/18 mm PTFE pair of steel screws of 6 mm length 40 mm pair of steel 6 mm nuts Our expansion system provides, through a series of grommets specially selected and manufactured with a particular rubber to ensure a high grip, a safe anchorage of the handlebar caps stabilizer to manubio, avoiding their loss.