I have an '08 96ci w/ no releases....ran across this https://www.wimmercustomcycle.com/co...elease-kit.php
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Snake oil. Save your money.
For what that costs you could have compression releases installed in your heads.

 

I'd be leary of that groove in the plug threads, can see that going wrong a couple ways.

 

Agree with post number 2 and number 3. It looks like that setup could end up going sideways to me.

 

Run Away...Run Away

 

https://m.youtube.com/watch?v=7FPELc1wEvk

 

 

Wow, $40.00 each for their spark plugs.

 

no kidding, I had to do a double take. They must (?) manuf them specifically for this application?

I did not necessarily plan to buy this product, but the concept was interesting.

 

They'd have to be, extra long reach with the port groove machined in on each. Don't think those plugs will like being removed and reinstalled more than once, get a little carbon build up or the pop valve malfunctions it'll damage threads in the heads.