Upgrading cassette to 10 spd on shimano 2300 levers

[Cinq]

I currently have the the shimano 2300 shifters with an 8 speed cassette on the back.

Looking to upgrade to a 10 spd but am I right in saying that the 2300 shifters will not be compatible with a 10 spd cassette?

If so, will I be looking at potentially: new shifters, new cassette and new chain?

I have a tiagra rear mech on the back

 

[Hacienda71]

Yes you will need new shifters. For a cheap option look at microshift. They are Shimano compatible, good value and remarkably light.

 

[Cinq]

Will do, cheers.

 

[amaferanga]

If you upgrade shifters then you should also upgrade the dérailleurs to get the most out of the upgrade. I'm not even sure if 8 speed dérailleurs will work with 10 speed shifters so you might have to replace them anyway.

I'd recommend you try to get hold of a complete groupset. Used ones in good condition come up on eBay fairly often.

 

[bobones]

You don't need to replace the derailleurs: both front and rear will work fine with 10 speed shifters. The chainset should work fine too. I've done this exact upgrade. I moved my Microshift 10 speed shifters from my Felt to my winter bike when I bpught 105 5700 shifters for the Felt. I bought a cheap SRAM 10 speed 11-28 cassette and a KMC X10-93 chain and that was it. My winter bike is built on a 2011 Trek 1.5 frameset with 2300 RD (8 speed), Sora FD (9 speed), Sora Chainset (9 speed). It all works flawlessly. I only replaced the 2300 FD with Sora because the Trek needed a different band diameter than the old winter bike and the Sora FD was cheap. Derailleurs have no awareness of 'speed': they just move according to the cable pull of the shifters.