So you went from the stock 2024 CVO RG ST 121 to a 135? Ya, that thing has to be fun to ride.

 

Actually, I only rode it as a 121 to the 1K.

While I was waiting for parts to relocate the remote reservoirs to accommodate a Chopped Tour-Pak so that my wife would have a back rest and we could ride two-up, I discovered my dealer had two SE 121-135 Stage IV kits on hand and were already installing one on another bike.

The stock 121 HO was good ride, but not quite as strong as my 2017 RGS with a FM 124 Stage IV.

After her first ride on my FM124 build, my wife admitted that although she had approved the funding, she begrudged the money I spent on it.

Then she added that our next bike would need to go like that one!

I had no choice; I couldn't disappoint her!

I had to do the 135 Stage IV!

 

Beast mode! What tuner and exhaust?

 

Tuner options are pretty limited at this point today!

For the time being I went with the Harley Davidson Screamin' Eagle Pro Street Tuner with the Screamin' Eagle Smart Tune PRO Automatic Tuning Module.

The Master Tech that built my SE135 it also built my FM124 and tuned it with the Power Vision, and I have a great deal of confidence in his work.

I am expecting Dynojet to have the Power Vision available for the new ECM by this Spring.

Dynojet actually has a research facility about two miles from my dealer and they collaborate with the shop at my dealer. I'm sure they will notify me when the Power Vision becomes available for my build, probably with an aftermarket cam recommendation.

An aftermarket cam and tuner would probably produce another 10% in performance, maybe? But honestly, I'm not sure I need it! It is currently producing a nice wide powerband and good peak horsepower.

I really struggled with the pipe decision between the HPI 'Shorty' and the Bassani 'Super Bike' pipe. Finally, my wife told me not to worry about it because I usually end up buying two or three anyway and I went with the Bassani because it was available.