The crisp - shifting 6 - speed manual transmission on 340i models is equipped with a dual - mass flywheel with centrifugal pendulum absorbers. (topspeed.com)
Other Callaway - installed goodies include the 450hp LT4 SuperNatural engine which dyno'd at 466hp, aerobody kit, Brembo F40 front brakes, Double D exhaust, Callaway single mass flywheel and clutch, and Bridgestone Run Flat tires. (corvetteblogger.com)
The dual - mass flywheel consists of two flywheel sections sandwiching internal springs that are specially tuned to reduce noise and vibration. (media.fcanorthamerica.com)