I won't detail the @
Raceseng CasCam upper mounts in terms of how they are installed, the instructions are pretty clear.
However, a few things to note if you are installing onto Ohlins:
1) It drops the front of the car by approx. 15mm (more than I thought), the front wheel gap went down to about a finger (from almost 2 finger gap with the Ohlins upper mount).
2) It uses a 15mm sleeve insert. The original measurements seem to call for a 14mm sleeve but it doesn't fit. Kudos to Jarrett and his team for getting the proper inserts for me without issue.
Installation onto Ohlins:
Remove the Ohlins uppers. Pretty straightforward...
The lower spring perch needs to be loosened. More on this later:
There is a difference in the collar height that sits on top of the spring perch, the Ohlins is much thicker versus what the Raceseng one is. First picture is Ohlins, second is Raceseng:
If you look closely, the Raceseng collar is less than half the height of the Ohlins collar.
To set the proper spring height/preload (if any), loosen the lower collar and make sure the top perch is all the way down on the shock body.
I used both the collar + the supplied pillowball shock nut to hold down the top perch:
Next, rotate the lower spring perch so you get the proper spring preload:
The rest is pretty straightforward... install the plates onto the car, install coilovers, etc etc.
The car now sits approx 1 finger lower if measured by wheel gap, around 15mm.
-alex