Yes. The maximum length of the text message that you can send is 766 characters. However, if you send more than 160 characters then your message will be broken down into chunks of 153 characters before being sent to the recipients' handset.
The good news is that the vast majority of handsets nowadays will join the multiple message parts together and present a single, extra-length message for the recipient to view.
The bad news is that the networks will charge you for every chunk of 153 characters that you send!
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