Originally Posted by canklecat

RevoShift aren't a bad design, just cheap materials that can't be serviced. I have one bike that uses 'em, a mid-2000s Globe Carmel comfy hybrid/errand bike. I just replace the grip shifters when they get balky -- it's always a sign the plastic mating surfaces have cracked or warped and can't be fixed.

Kinda wish they'd make a better quality version for folks who need the grip shifter for ergonomic reasons -- they're easier than thumb shifters for folks with arthritis and bad thumb joints.

I keep an eye out for RevoShift replacement kits and buy 'em in advance. Around $10 is reasonable for both grip shifters, functional low end Shimano cable housing and galvanized cables.

OTOH, that same $10 can buy a set of SunRace SLM-10 thumbie friction shifters, cables and housing that'll last longer.