exhaust springs

[matt14c]

Anyone know where I can get some exhaust springs for a bills pipe? Im missing two. I checked two local dealers and then a snowmobile dealer and they didnt have any or know where to get them. I emailed Bills Monday and they havent responded. How do I measure a spring to be able to order them somplace? Do I measure the coil part and total length? How do I figure out the tension?

[cdrookie]

i get mine from dennis kirk, moose makes then along with others.

measure the distance on where they mount, convert to metric, and get a set of springs a little under that measurement.