I have a 2006 street glide and will be installing a S&S 126" star racing engine, think it was rated at 150hp and 136 ft lb of torque. Buying the S&S clutch also. Question is whether the stock primary will hold up or should a belt drive be used? Original chain has 11k on it,thought about using same sprockets and chain and upgrade the tensioner . Will also be converting over to a screaming eagle or baker 6 speed. Thanks

 

Stay with the chain it will hold up better. I doubt I have to tell you which 6 speed I recommend.

 

I am probably going with the baker, but was going to call their tech department on gear ratios for my engine.looking at just a gear set