Description: One of B&M's most popular manual shifters, the Ripper reduces shift throw by up to 30%. Made of high grade stainless steel and aluminum, the Ripper has a ONE MILLION MILE warranty. Installation is very straightforward and can be in your car within an hour. The design of this shifter protects your transmission from damaging "over-shifts" which are one of the leading killers of Mustang manual transmissions. The current model Ripper's no longer require the use of stop bolts to prevent over-shifting . This is accomplished by the elevated aluminum shifter housing that is part of the base. They do, however still ship the Ripper with two stop bolts (front and back side) in case you want to go ahead and play it safe.