Drain 2 in 1 "RSD Tracker" of Vance & Hines, for HD XL Sportster from 2004 onwards, not approved. These discharges have less Sissybarpressure than series. Therefore the mixture of gasoline becomes more lean and should therefore be absolutely put to point the mixing. To put to point the mixing should install an electronic supplementary. The recalibration requires skill and patience, in some cases even a PC. It is recommended to carry out an audit on the test bench. For most applications the installation of a module of Screaming Eagle is not sufficient result. caferace.it shall not be liable for any damages to the finishing or the material discharge due to a recalibration deficient. These parts are not approved for use in public traffic in Italy and Switzerland. Their use is limited to the races and to private land.