Ultima 80" Flywheel ?

[catmcaw]

  According to Ultima  their 80" (4.25 stroke) flywheels are a replacement for stock flywheels.  Are they balanced for stock pistons or must they be used with their pistons.  I would call and ask them but I don't think they have a tech line.  I am thinking about using them in a Fatvo build.

[gryphon]

Try this, it was posted on a chopper board. Ultima Company LLC • 2100 Highway Z, Pevely, MO 63070 • 314-773-3064
Let me know how it turns out. They don't seem to want to have much contact with the buying public.

[catmcaw]

Thanks Gryphon
  I'll give them a call first of the week.

[Hybredhog]

    I've used a bunch of Ultima 4-5/8 assemblies for a 89" build, useing KB 1200 sportster flat tops (they have the right deck hieght), & love'm. All there wheels come pre- balanced, But in the big scheme of things a few grams +or- isn't going to make that big of difference. So you can call them & ask what wieght their useing in the  balance factor, and odds are its close to KBs' or other top brands...Jeff