I am considering both of these. I spoke to Fuel Moto today and had a good discussion with them to learn more about their system. Right off the bat, it's $1,000.00 less than S&S but I am working on spreadsheet to list all the extra costs and with both, there are lots of them. This becomes a $5k upgrade pretty quick.

What I can't tell and maybe you can help me with this is what is the actual difference between the kits at the end of the day? The S&S kit includes a lot of different components that the FM kit does not. If I do this, I am definitely doing the injectors, new heads and throttle body on either. I don't want to keep opening things up to add parts in. I want to do it right, once.

FM tells me I can expect about 140/140 out of their kit and I believe them. Possible to even get 150 or so depending on exhaust. From what I see on the S&S site, they are not getting as much power and torque. I have yet to speak with S&S directly, though.

Any input greatly appreciated.

 

 

Yeah... I'm definitely doing a new clutch. S&S comes with a cam plate and oil pump but like you said, not sure if it is needed.

 

I wouldn't spend the $$ on heads, especially the SEs, the stock heads will do 140+ all day long. Fuel Moto knows what they are doing & have done a lot of testing to know what works. There is a 124 in the dyno section @ HTT with 64mm TB, 5.5 injectors, S&S 475s, stock heads, & 2-1 pipe making 140-150, GMR Performance, Steve is one of the best builders & tuners around. You also might consider talking to George Bryce @ Star Racing, that's in your part of the woods.

 

I have had a 124 motor in my dyna for 7 years. A lot of fun, but not a bike to use as your regular ride. High performance has a price: bike is harder to start and tough on parts (clutches and transmissions). If you have not owned one, consider the skill needed to putt that power to the ground. Very difficult to bring off the line, and powering 2nd gear is an adventure you must be mentally prepared to execute. My M8 with some upgrades is fun to ride. I can power through the gears with no concerns. It starts every time and is dependable, Would not want a 124 motor in my regular touring bike. Food for thought.

 

I had not heard any of this. You're saying that the rear wheel gets loose in first and second gears?

 

Fuel Moto said it's better to get heads because they come with the right valve springs and whereas just buying the right springs is $400.

 

One of my local shops put me onto Star but I am not willing to spend that kind of money at this point. A similar upgrade would be around $8k. Awesome stuff though!

 

 

I ha e done a couple of 124 kits. The S&S kit did 130 hp and 140 tq. That had stock heads and throttle body. I have also done a revolution performance build with CNC heads and a HPI throttle body. This came out at 150/150. These are repeatable numbers on all dyno. Not just the dyno of the owner selling you a kit.