OP is right though on the weak *** starter from HD.
I am thinking about getting a new one too also. I replaced mine two riding seasons ago with a a new starter clutch and it is acting up already again.
Even went so far as to replace the compensator which probably didn't need replaced but did anyway as I figured it would go out sooner or later.
Maybe try an All ***** starter clutch but those are $65-85.

 

Come on, should be easier than 3 horse power to make it fit.

 

Absolutely..........

 

Bagger, Your killing me. However i did find a way around that 3 hp. It's called a 96" big bore kit. well over 100 on both... My butt feels it as well.. There is truth in the saying "There is no substitute for cubic inches"

 

Ya I have compression releases, the 121 is still allot for that old starter to spin when it's cold

 

I still say your biggest problem was your battery.

 

looking at these lithium batteries http://products.batterytender.com/Ba...t-Battery.html
available in 240amp for 150, 360 for 229, and 480 for 299 with a few other sizes in between, also think you have to buy their tender for another 30 but seem highly rated from what ive read.
what yall think amp wise?

 

This one will give you Burst Cranking Amps: 720 (5 sec @ 70°F)

https://www.ballistic-batteries.com/...roducts_id=468

 

Seriously, if you guys need to run a huge battery (like my stereo put's out 1.2 giga watts) then there's some thing wrong. 10.0:1 needs comp release's....Make your motor or stater system more user friendly. this is what I use
http://www.interstatebatteries.com/P...10+CCA+-+18+AH
and never had an issue. I have a 1.2 kw starter with comp releases.. the price is real good too. $110-$130 depending on where you get it.... JMHO...

 

ouch proud of them ain't they haha