Street Triple Wouldn’t Start

Battery. Battery and battery.
Ignore the voltage. It's the amps that you are describing tbh.
If you do get it started though, put a voltmeter on the battery terminals to see if it's 13+ volts with engine running.
If not, it's the rectifier not charging it so even if you change the battery, it'll soon happen again sir.

 

WOT HE SAID .... but with early Streets it's as likely to be the stator that has burned out (a fairly common problem) and, quite likely, taken the reg/rec with it ....... so, check the alternator and reg/rec. And also spray some switch cleaner into the starter button - in fact try that first and see if it makes a difference, if not, go back to the original plan to check the charging circuit.

Good luck.

 

+1 on the spraying the starter switch. Had a 2015 Street Triple where the starter switch was playing up. Sometimes it would start, sometimes it wouldn't. A spray of contact cleaner into the switch kept it working for several months. In fact it only failed again the day I PX'd it.

 

Yup, the crank voltage should not go below 10v.

 

Doesn’t a low cranking voltage also risk damaging the starter clutch?