Originally Posted by
luker
Nope. It'll work. You might want to look for an ultra-seven speed freewheel from Suntour, but that probably isn't needed. The 9-10 speed chains need the narrower cogs, but I'm pretty sure that you'll be happy with an 8-speed chain. The black SRAMs are cheap and look appropriate.
Show us the finished product.
I know that this is a nitpick, but I believe that ALL 7-speed freewheels have "Ultra" spacing - any 7-speed freewheel would do. But a new freewheel isn't necessary. Any 6,7,8 speed chain will work just fine.