Twocozz,
I'd have thought you'd be better off making up the part to the right of the one you want measuring
Basically its just 2 triangular pieces of metal, whereas the bit you're looking at getting made is cast with 4 bearing houses in it
Also, if you make measurement A longer (as I'm assuming is your intention to lower the rear of the bike) then the shock is gonna contact that part as the suspension compresses
To my mind if you make the piece I've suggested and move the hole centres you should be able to lower the rear without anything touching.
Downside is you're into the realms of altering the rising rate of the entire linkage which requires a fair bit of recalculation
However
If I was doing it myself I'd DEFINITELY turn my attention to the top shock mount instead
There's more than enough clearance there to make a new one up but a bit shorter.
It's a LOT simpler, achieves the same results and if you have it made too short (ie the shortest possible) you can EASILY lift it back up again by inserting spacer plates to fine tune it
Hope this helps
Ben
PS (and its a big one)
Don't forget to lower the forks by a similar amount too otherwise it'll steer like a chopper
And as the standard cans go down almost in a straight line you're into the realms of fiddling to improve the ground clearance. I've had the same issues albeit on track/ fast road use.
List of mods includes:
High level cans
Seriously shortened footpegs
Heaving on the exhaust header to move it slightly so it doesn't touch down
