![Image](https://i.imgur.com/p7bHrZ1.jpg)
Purple Malossi
![Image](https://i.imgur.com/7kBzma3.jpg)
OMG
OMG makes a very similar high flow petcock that's a lot easier to turn. However, neither of these sport a reserve!
![Image](https://i.imgur.com/QOJ1Yya.jpg)
OMG Vacuum
OMG also makes a vacuum style like the ones employed on scooters. These work well enough, but aren't high flow like the two above—again no reserve. This is what comes on the newer GPRs from 2005 on.
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![Image](http://ecx.images-amazon.com/images/I/41hLrFQklmL._SY355_.jpg)
Pingell Power Flow
Power Flow available on Amazon. These are for the Yamaha Banshee, Raptor, and Blaster so it is quite possible that other petcocks for those bikes could be employed on the RS50.