Originally Posted by Dale2011WRX
It's amazing that an automotive engineer never figured that out.
They are aware but would go a softer compound like a 6MT gearbox mount that is solid.
There is no solid soft rubber 5MT OEM mount, actually there is a GC8 STI RA mount is solid 5MT but all too old to be of any use.
Not sure what your GRB mounts looks like, they may be an improved designed over the GC/GD mounts(?)
Originally Posted by Power6
Interesting I did a similar thing to my Grp N mount, focused more on replicating the stock voids to make the mount more vibration absorbing. It worked well as a "happy medium" in my case.
Neat job! How did you cut it out? I was going to do a similar configuration but thought it was too much hassle to cut it all out, single line was irritating enough.
You were in a similar position as me, need a 5MT mount, choices are OEM too soft, or way too hard Group-N, aftermarket is worse.
Yep works well!