Cost can very alot depnding on what your capable of handling yourself. There are a few things in these engines that can get complicated but nothing to overwhelming.
Basically if you ride it like you want to break **** then it will break. Take care of it and it should last a while.

 

I see Fuel Moto responds on here, i have sent two different emails trying to get information from them and i get no response! Maybe i can get a response on here, i hear great things about them. But the no response on me inquiring on a tuner really has me looking elsewhere.

 

Call them at the # Jamie posted. They are always available to talk and you get immediate response.

 

I find it's best to just call them, it's faster and they are always friendly and helpful.

 

And it says exactly this on their web site. Pick up the phone. Funny how nobody remembers a phone anymore

 

Pickup a phone and they will take all the time in the world to talk to you and make sure your happy and that you have the right product. FM recieves hundreds if not thousands of emails a day!

 

Curious what you guys would thing about doing a 107" FM kit on a motor with 120k on it with .004 run out? I just started to loose a 1/4 quart of oil every 5000 miles. Already running the 555, PV, and Fatcat. Thanks!

Sorry for the hijack...

 

Nothing like a good over hual.

 

They are, but it's more about their construction than because they're larger. Forged pistons are generally thicker and heavier, cast pistons have more complex shapes and can be made thinner and ligher. All 107 pistons are forged, it's a strictly aftermarket configuration. Cast pistons are expensive to tool up for, which is why they're usually OEM.

 

For the reliability acspect of the FM 107 I can tell you they did my street glide in April and I rode it 2 up 10k miles last summer. I rode through Bear tooth Yellowstone you name it. I rod on it quite a bit I'm not stupid stand on the rev limiter like a lot of those idiots my hearings are under a load hauling ***. I haven't had any issues and I'm coming out next spring pulling a trailer 2 up to glacier I'm not worried at all of the reliability of the engine...