........hmmm, I'm giving you too many of my "speed" secrets.
Holy smokes ! I had a hard time finding a 5.0 since the stock 5.2 is too light for many riders. I wouldn't have thought they even made a 4.6, and you made "A" with that spring ??!!!I had a 4.6 on the rear...I weigh 190# without gear
Boomhauer, would you say the LTR PV cover is a worthy addition to improving bottom end response on your 300. I hear they are a must on the 200 and 250's. Seems to be mixed opinions on the 300's in terms of noticible added effect vs. the $90. I run a Fatty exhaust which could use a little extra on the bottom.
It is a very simple thing. I might be out of line here but when building hot rod motors I learned from a pro engine builder that more air to the engine = more power. We had some awesome results on a flow bench after I ported and polished numerous heads just how much HP & Torque you can gain just from porting & polishing heads. An engine is just a big air pump. So with the PV cover installed you have more air flow to the engine.
So I try to think along the same lines when working on my bike and am trying to gain more power.
Boom