I put the Progressive 444's on mine last year and it helped greatly. The stock 2015 Iron shocks were terrible. I am installing the Progressive springs next , probably this weekend if I have time. The new shocks and the Mustang Vintage seat made the Sporty MUCH more comfortable..

 

Yo' HOTLAP,

I added this post to my favorites. Excellent post and you should feel feel "honored" about being in my favorites (LOL). Seriously, Great write-up and I'll be referencing this in the very near future! Very much appreciated!!!

Nailz

 

Great write up and photos. Well done & thank you.

OP mentions a very important point about measuring fluid level not counting on quantity of ounces!

FWIW One can dive deeper into suspension tuning by increasing/ decreasing the oil level or changing fork oil weight.
From my memory HD standard oil is 10 weight and HD SE is 15 weight with other brands available in
increments of 2.5 weights up ranging from 5 to 20. Personally, to avoid seal blow out, I would not
raise the oil level more than 1/2 inch. Increasing oil level increases compression (resistance) dampening,
heaver weight oil increases (slows) rebound dampening. Progressive springs are an inexpensive must do IMO.

Again, well done & thank you.

 

Great points, and be super careful about too much oil, it can lead to chatter or worse, hydraulic lock of the forks.

See a full report on front suspension at this LINK. Good info on what to look for in better ride quality and better handling.

 

No problem guys, glad someone can use the info.
On a side note after a season of riding the heavy duty springs have softened somewhat and the harshness has gone out of them, very happy with the ride and handling overall.