Hi Paul,
Suntour made two different 6 speed freewheels. The ultra 6 was a narrow spaced freewheel designed to work in the space of a 5 speed freewheel on frames with 120 rear spacing. The 6 speed standard was designed for 126 spaced frames. They then came out with the 7 speed ultra to work in place of the 6 speed standard. All 7 speed freewheels by Suntour are the same width.
I think........
Clear as mud?
Regards, Karen Rawls In way too hot Winchester VA....
Did any manufacturer besides SunTour make "ultra" 6 and 7 speed freewheels? I just installed a 7 speed Suntour (ultra I think) on my Raleigh International and it just barely clears the dropouts with a 6 speed axle...but it does fit! Final dumb question: are all 7 speed freewheels the same width or is it just the ultra series that fit in the place of a standard width 6 speed? Thanks!
Paul (looking for the right gear) Raley
Leonardtown MD