This new design is a direct replacement for the stock OEM Mini Cooper and Mini Cooper S damper from 2001 through 2006.
The heart of this unit is the tried and true “damper within a damper” design that has put ATI ahead of the rest.
The outer shell has been machined to allow OEM serpentine belt locations, and includes laser-etched timing marks.
Unlike some of the other aftermarket solid crankshaft pulleys the ATI retains a damper to help eliminate harmful crankshaft harmonics that can cause horsepower loss.
This is a +2% design to speed up superchager RPM and other auxilary belt driven components.
The only +2% SFI approved damper!
As used on 'Old Red' to increase water pump RPM.