Has anyone installed the 103 to 110 upgrade on the Rushmore yet?

 

Goldcon did if I'm not mistaken. But he also did a stage 4 on it too. I'm sure he'll check in and fill in details. I'm doing a stage 4 on my 103 in a couple weeks, it supposed to net you more power and torque than a 110 upgrade.

 

I have heard nothing but positive about the 103 stage 4 upgrade. IMO, better than going 110inches.

 

I can find very much info on the stage 4 . Roughly what does that mod cost?

 

I did the 110 stage 4 upgrade to the 103 as JC mentioned above. The reason I stayed with the 110 instead of the 113 was I wanted to keep my warranty on the new bike (and yes this can be done).The mechanic that built mine said it really wasn't worth the money to go to the 110 unless I put in the .10 over high compression pistons and re bore the cylinders and cases for the larger pistons to get a nice tight fit, rather than the slop that comes in the 110 kit. Just had my 1000 mile service and Dyno tune yesterday. The results- 115 horsepower and 112 torque. I must add that the difference before and after the Dyno tune are unbelievable. I could of gotten higher numbers with different heads but I wanted to keep my warranty besides it is way fast enough with the proper tuning!! I also swapped out the cams that came with the 110 kit for 260's which put the power right where I wanted it 3rd and 4 gear.

 

To do it right your probably looking at 5 grand, give or take.