hrmm...Sector can get you any Eibach rate you want just depends on how you want to drive the car and tires. Jack has lots of great info on the Ohlins, and I am sure people like Brent can give you a sense of what rates would suit your driving style. I've got singles, no aftermarket bars on front or rear, and the rates I have are the ones Frank gave me long time ago 525F 650R - I set the car pretty soft on the Nitrons, springs take care of the rest.