I bought a polished Whipple 2.3 from a guy on here a few weeks ago. He told me he believed the Whipple was a Gen 2. Doesn't matter to me either way. I got a Gen 1 on my Lightning and it works fine. Anyway, I called Whipple to find out what Gen it was. That way I would know what pulleys to get. The guy told me the serial number is on top of the band that is between the gear cover and rotor housing on the front. Just my luck that my serial numbers have been polished off. he told me more than likely it was a Gen 1. But here is the info he gave me that might help the rest of you guys out.
Gen 1 serial number will start with a W3A xxxxx
Gen 2 serial number will start with a w140 xxxxx
I checked the number on the Whipple in my Lightning and it starts with a W3A.
Gen 1 serial number will start with a W3A xxxxx
Gen 2 serial number will start with a w140 xxxxx
I checked the number on the Whipple in my Lightning and it starts with a W3A.