Profile Elite Aluminium Splined Driver with Chromoly Cog mount-type-1 The Center Stem boasts Shark

The Center Stem boasts Shark Tooth Clamping inside the top cap make sure your bars stay locked down

The strength to weight ratio of the Ribcage cannot be matched

The M2 features a heavy duty section that connects the two lugs that makes it almost impossible to break

BB TYPE: Mid

HEIGHT: 14

Profile Elite Aluminium Splined Driver with Chromoly Cog mount-type-1 The Center Stem boasts SharkThe Profile Elite Aluminium Splined Driver is a replacement driver designed for Profile Elite cassette hubs only. Upgarde your standard driver with an aluminium splined driver that delivers less weight, this driver comes with a chromoly cog included. Weight: 0. 17 lbs (76g)