Shimano groupset hierarchy

A.D.R · May 25, 2013

I've had my Carrera Krakatoa for 20 years now give or take, bought it 2nd hand in 93(?), the groupset on it was pretty much all Shimano Altus A20, and aside from the chainrings and cassette wearing out the only thing wrong with it is a little side to side play in the brake lever hinges (rivets not machine screws), the mechs have never missed a beat.

This is the one http://www.retrobike.co.uk/gallery2/v/M ... 0.jpg.html

I picked up a Marin Hawkhill last year for free and its running Acera X stuff, now I think both bikes are the bottom end of each respective range.

http://www.retrobike.co.uk/gallery2/v/M ... X.jpg.html

I'm just wondering where Altus A20 would have sat as I've read conflicting opinions trawling google. Some say its equivalent to Alivio, others Acera, and some say it was the entry lever stuff.

Andy

FluffyChicken · May 25, 2013

www.fa-technik.adfc.de/Hersteller/Shimano/Gruppen.html

and the archive of course

you're at the bottom. check the "M" numbers. many really sat in the same range. Mxxx. first x is the level. second I'd a groupset model change I indicator and can sometimes split a level into two especially down the lower end.
third is an additional identifier.

rosstheboss · May 25, 2013

From memory Altus A20 wasn't too bad at all - C20 and C10 were bloody heavy, including things like chainsets with non replaceable rings, whereas the A20 and A10 groupsets were getting pretty good, with Exage above it then Deore LX,XT and XTR.

The only problem I can remember was it was quite heavy on my old Univega, completely bombproof though...

Shimano groupset hierarchy

A.D.R

Dirt Disciple

FluffyChicken

rosstheboss

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