What size Progressive 412 on your 48?
 

I think the stock is 11"? What size did you put on if you swapped it?

You beat me to it, I want to upgrade my shocks as well. Im struggling between 13" or 12". I guess the only way to find out is to buy a set. I think I am gonna go with heavy duty, I'm pushing 240 pounds plus I might have a passenger from time to time.

I replaced my 11.75" stock shocks with 13.5" Progressive 440 standards. If I had to had it to do over I would get 13" because my top muffler gently taps the bottom of the right shock when Idling at times. I understand that the R model had a dent in the muffler for that reason. I weigh right at 200 so the standards are perfect. Remember that the bike will raise just under half of the additional length.

Just put 11.5" heavy duty 412s on and I LOVE them. Huge difference, I only weigh about 190 but it's a huge improvement over stock and I'm sure my girl will say the same when she gets on for the first time. And you can barely tell the difference in height when looking at it.

You might want to contact Progressive and see what they say, I sent them a private message here on the forum when I was looking into buying new shocks. I believe the 12.5" and taller shocks have a different spring rate than the shorter shocks. You might, even at 240, want the standard rate springs if you go with the 13", but heavy duty with the 12"...

I'm right at 200lbs and have the standard duty 12" 412 shocks. Of the 5 adjustment positions, I ride right in the middle at #3, and go up one click when my wife is on the back. Have not needed the stiffest setting yet, maybe if we were loaded up with gear.

Put on 412 this afternoon. Stock were 11" so I kept it at 11". My theory is that professional engineers designed the bikes geometry. In high school I failed geometry....so don't mess with it. However, after a test run I think I should have dropped the extra cash and gotten 430's. I cannot tell a difference between 412 and stock.

Those same engineers made the frame the same for all Sporty's.

Meaning?

Stock shocks have never bothered me. Stock fork springs dive when breaking, so I'll replace those soon.

Very simple, same frame ===same geometry.