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12 degree. 1.365 from shoulder to sheave, stackable up to 1.425.
Jeff, You would have to measure the thickness across the sheave and then see how much has to be removed to gain the angle you want. In some of the internal pocketing, I'm afraid it could get pretty thin.
I'm a little bit snobby, so undecided for now.
I honestly am not sure which year the forged parts started and stopped with the TRA 2. From what I have found, there were a lot more different stems than I ever realized. I'm not sure there is a definite answer to your question without doing some close measuring. Be careful re-cutting a multi-angle sheave. The sheave thickness may get very thin.
Doug, I still have the .750 track. no stud holes, no tears. 412 miles on it. $200
That's two different questions, right ? The heat should have very little affect on this material in comparing to the parts you have been running. as for hotter or cooler, should not be much different, as most of the heat comes from engine and belt slippage. due to much tighter tolerances and "truer" (if that' s a word) faces, there should be less slippage, more efficiency, less heat. IMHO.
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