Hi was curious if any1 has a f4 jacked up?wandared if its improves the cornering or not

 

Not sure about the 600F4 but it is popular to put a 6mm spacer over the rear shock mount on the blackbird.

Lifts the rear of the bike and improves the turn in and general handling.

When people want more from the bike - the next step is to lower the front of the bike by moving the forks up in the yokes by 5mm