ATI Crankshaft Harmonic Balancer Pulley F54 F55 F56 F57 F60 Cooper S

ATI Racing Crankshaft Harmonic Balancer Pulley for 2014-2021 F54 F55 F56 F57 F60 Cooper S This is the crank pulley which is also the harmonic balancer for the engine. As these get older the rubber comes apart and these will fail and fall off leaving you stranded. WMW partnered with ATI Racing to make an improved and lighter crank pulley that was also a damper to improve engine perform and even allow it to run smoother since the ATI damper will dampen better than the stock traditional solid rubber damper. Sold as individual WMW ATI Racing harmonic balancer