Originally Posted by GTX MATT
They are 867 heads or some version of 867 heads cast by Brodix. Are you sure they are 15 degree?

They are basically an old version of a Brodix 10X.

https://youtu.be/SryvK9ej_pw?si=Mz1ah8h0vmxOJk6i


Yes they are 15 degree. The guy sent a head to JE so they could measure it before making the pistons. JE wanted to confirm the valve angle and make a mold of the chamber. The chamber is less than 50cc so it is tiny.