- What expected lifespan For Rear Mech ?
5 bikes mix of deore slx xt. 100 miles a week commuting…. Only mech that died was the m8000. Got too flacid and started to ghost shift. Could feel a shed load of play in the bushings. Pretty sure the clutch (I say clutch but it’s nothing more than a friction band) causes excessive wear as there is more force needed in the up-shift. My non clutch mechs from 7/8 years ago are running fine.
Mind you would prefer replacing the mech every few years than dropping a chain.Posted 1 year agosillyoldmanSubscriber
Lots off spares potentially available.
get part nos from link below, and order via LBS.Posted 1 year agoP-JayMember
Could it be a clutch issue? They’re silly easy to maintain.
I don’t think there is a set time, but accident aside I don’t think I’ve ever really killed one.
I did however destroy 3 very expensive super-short X9 mechs in 2 days in the alps a long time ago – the wounds heal, but the pain reminds! €130 each…Posted 1 year agohols2Member
I have an XTR that I’ve been using since 2003 with a couple of years break in the middle, plus a bunch of other Deore and XTs ranging from 10 to 20 years old that have been swapped around between bikes numerous times. If you don’t smash them against rocks, they seem to last pretty well.Posted 1 year agophiljuniorMember
I wouldn’t be too upset if my rear mech died after 2 years, but of course it depends where you ride, what weather, and how much.
Sounds like a repair rather than replacement is possible – also I don’t think I’ve ever had springs stop doing their thing, but I have had sticky and loose pivots. Sticky ones can be sorted, only ever had them on the pivot at the mounting bolt on non-shadow mechs, probably due to commuting on salty roads in winter.
Usually if it’s not shifting into the smaller sprockets it’s muck in the cables. Have you ruled that out?Posted 1 year agomindmap3Member
My GX mech still shifts fine but the clutch is dying because it’s bloody noisey all of a sudden – chains aren’t dropping but it is clattering like a good ‘un. It needs new jockey wheels which are over half the cost of a new mech.
My old 05 X9 mech is floppy as a floppy think but still shifts fine once it’s on the bike.Posted 1 year ago
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