Finding a high-flange freewheel hub that is both high quality and affordable isn't easy to do these days, and it's even harder to find one in 126mm spacing for older frames.
For true deep cleanings, Muc-Off Drivetrain Cleaner will get your gears shining bright in an instant. When used in conjunction with a chain-cleaning device, you'll be able to remove months of grime, grease, and neglect.