chain and cassette help

I want replace my sons chain and cassette on his 29er bike the old one is KMC Z99 9 Speed Chain and Sram PG-950 9-speed 11-32T . I have never removed a chain or Cassette
before but i have been watching a few videos of u tube and decided I might at lest give it a try . Fist can I use any 9 speed chain - and - 9 speed cassette with the bike>? I want to buy something that is more of an upgrade over the bike parts being used . I will probably stick with kmc
chain and sram cassette can anyone recommend what would be a good upgrade ? Also If I get the same link length chain will the chain just be a perfect fit ?
before but i have been watching a few videos of u tube and decided I might at lest give it a try . Fist can I use any 9 speed chain - and - 9 speed cassette with the bike>? I want to buy something that is more of an upgrade over the bike parts being used . I will probably stick with kmc
chain and sram cassette can anyone recommend what would be a good upgrade ? Also If I get the same link length chain will the chain just be a perfect fit ?
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Posts
Just keep the SPDS the Sam and no probs.
Parktools :?:SheldonBrown
Some people would call you for recommending a sram chain over a kmc
I on the other hand would agree with your recommendation sram chain with a xt cassette