Moto Grand Prix
Main Motorcycle: 2003 Sprintabusa ST
Mile High Moderator
Join Date: Jun 2014
Location: Parker, CO USA
Other Motorcycle: 2016 Speed Triple
Extra Motorcycle: 2003 Sprint ST - Sapphire
Unsure where anyone was being treated poorly. OP posted a question which, if you come from carb'd bikes, it's an honest question. The photo was helpful, by the way.
A user posted an answer, that mystery fitting is the fuel pressure regulator. It's basically an inert valve to do what it's name implies. Again, if someone hadn't had a fuel injected bike, this would look alien. Plus you'd be cursing British engineering for placing what could be mistaken for a petcock, in a damnable location.
We're glad you're here Genny, and hope you stick around. Yes, some folks are sarcastic, but there's a boon of knowledge.
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I probably need an intervention because of the bikes that keep 'following' me home. Current garage:
2001 Daytona 955i, 2 yes two, 2003 Sprint 955i STs (spouse rides one), 2016 Speed Triple, 2001 Kawasaki ZRX 1200R