I have a 2010 street glide that already had a 117 motor. I had to rebuild it due the S&S crank going bad which caused my cylinders walls to go back. On top of that my clutch basket had cracks when we pulled everything apart. This time im using the beefier Evolution performance clutch basket, S&S pistons and cylinders and new starter since the stock one has teeth missing. Installed a timken bearing and another bearing on the other side. My question is should I upgrade my tranny? and if so what? Or can I upgrade with a higher performance tranny rebuild kit so I can use my stock case.

 

We will have our Grudge box gear set ready in about a month and it will fit in your stock case. It will handle any torque you can throw at it:

https://bakerdrivetrain.com/collecti...nt=25265990659