Joined: Jul 2015
Posts: 7,365
Likes: 3,217
From: NW Oregon
Bikes: 1982 Trek 930R Custom, '91 Diamondback Ascent w/ XT, XTR updates, Fuji Team Pro CF road flyer, Specialized Sirrus Gravel Convert, '09 Comencal Meta 5.5 XC, '02 Marin MBX500, '84 Gitane Criterium bike
a 9sp. HG style "Shimano compatible" cassette will fit right on, after the dirt and greasy buildup is removed.
SRAM, SunRace, and a host of other companies also make the HG style cassettes...
i choose Shimano, SunRace, or SRAM, usually... good quality, and decent resistance to wear.
and yes, the more expensive ones shift better and last longer.
depending on your rear derailleur, you might be able to use a wide ratio cassette, or you might need to step down a few teeth on the biggest cog... what derailleur is on the bike, presently?
as an educated guess.. the hub is, most likely, from a company named Formula. Make sure it has good, fresh grease in it... neglect can ruin bearing surfaces in any hub.
Last edited by maddog34; 05-03-26 at 07:44 PM.