Shimano 12 Speed Cassette Loose Pieces

[Stockman]

I am essentially a Gravel Grinder and so find myself wearing out the 10, 12 and 14 tooth rings on my cassette.

Apparently one can buy these loose and essentially "refurbish" your cassette for a longer life at a much lower than complete part price.

Anyone done this or know where I can source these parts? 

Edited June 3, 2022 by Stockman

[BaGearA]

you can buy the 10 and 12 not 14 

 

they come as a pair in a little packet 

 

but distributor hasn't had stock for a while so you'll have to check if a bike shop somewhere has left

[Super Sywurm]

Ooooh, me want also!!!!  But I need Sram sprockets.

Edited June 3, 2022 by Super Sywurm

[TheoG]

Yes I did on my XTR cassette, I bought from Olympic Cycles but I see they out of stock:

https://www.olympiccycles.co.za/?s=Shimano+CSM9100+Sprocket+Unit&post_type=product&dgwt_wcas=1

Edit:  As Franna said, you only get the 10 & 12 as a set, not the 14.

Edited June 3, 2022 by TheoG

[BrentCGP]

Might I also chip in, if you find you wearing those down too fast, get a bigger chainring up front.

The smaller cogs have a lot more force put through them and the lesser the t count, the less that force is spread out over them. Spend less time in the bottom of the cassette and more towards the middle at cruising speeds.

I ride a 36t in Gauteng on an Eagle Cassette, grab a 34 when I go to the Cape. a 32 would be better but the chain length is not okay.

I find it okay to switch between 2t difference in the front. 4t, is a bit of a stretch.

Edited June 3, 2022 by BrentCGP
typo

[dave303e]

It is slightly frowned upon, but my LBS had some advice for me in a similar situation. Where we live is really flat, like watch your dog run away for 3 days flat...

I have 2 chains and 2 front chainring set ups. For around the farm it is a 34t up front and then on the slightest hill I am shifting gears, but it makes for more even wear on the cassette. When I travel for events or out of GP I swap back to a 32t and it's chain.

I know it is not perfect, but I know what it feels like buying a new 12 speed cassette because 3 gears are worn out and the rest are 100% so ya. It is also compounded by math, when 10 teeth are doing all the work they wear out even faster. if you were always in granny gear then the work would be spread between 50 teeth.

[TheoG]

Just now, BrentCGP said:

Might I also chip in, if you find you wearing those down too fast, get a bigger chainring up front.

The smaller cogs have a lot more force put through them and the lesser the t count, the less that force is spread out over them. Spend less time in the bottom of the cassette and more towards the middle at cruising speeds.

I ride a 36t in Gauteng on an Eagle Cassette, grab a 34 when I go to the Cape. a 32 would be better but the chain length is not okay.

I find it okay to switch between 2t difference in the front. 4t, is a bit of a stretch.

Agree, I got a 38 in front ....

[TheoG]

2 hours ago, Stockman said:

I am essentially a Gravel Grinder and so find myself wearing out the 10, 12 and 14 tooth rings on my cassette.

Apparently one can buy these loose and essentially "refurbish" your cassette for a longer life at a much lower than complete part price.

Anyone done this or know where I can source these parts? 

I did a bit of browsing for you, unfortunately look like stock of this is very hard to find at the moment, good luck ....  

Edited June 3, 2022 by TheoG

[love2fly]

Just a Caveat...when you're in your Granny gear the chain is very "crossed over" and you're putting max wear on chainrings, cassette as well as chain. So din't be tempted to leave it a little while when you get to the hilly environment.

As an aside, a very well known LBS in JHB Northern suburbs, catering to the quite-well-heeled fitted a 34 PLUS A NEW CHAIN (from 32) without checking length. Drivetrain made a noise when on 50T and couldn't fix with B Screw, only by adding 2 links. Admittedly bike may have been on the limit, who knows, but firstly they didn't check it correctly or take the bike for a test ride.....