BannedCR500Riders.com

Does anyone know if the XR petcock will interchange with the CR other than the direction of the outlet? I'd like to have a reserve function on my tank.
Thanks,

No idea but keep us posted if you find something that works, I would like reserve as well.

I think they all swap out... Honda's good about stuff like that.

I cant believe someone doesnt make/sell a reserve petcock kit for race bikes. If your racing, just leave it on reserve all the time. If youre doing everything else, reserve = time enough to get back to the truck!

Keep us informed, if it does work, This will be the next upgrade on the 500.

CR500 petcock





XR650 petcock.

The challenge is prolly' getting one with the right reserve capacity. Look for a XR tank the most resembles a CR tank , like a XR600 or something....

AlisoBob wrote:
The challenge is prolly' getting one with the right reserve capacity. Look for a XR tank the most resembles a CR tank , like a XR600 or something....

The reserve capacity is easily adjusted by altering the length of the main tank pickup tube. I have only ever had to extend one once, and standard clear fuel hose fitted perfectly. Because the factories are usually quite generous on reserve capacity, mostly the requirement is to shorten the original pickup tube with a craft knife.

xr650, xr400 and the trx250 quad petcocks all fit.

I use the XR400 petcock on my Liger. It has a reserve and the outlet points backwards compared to the 650 forward. XR400 fits perfect for a Lectron carb because of this.