Review on Honda XR50R XR70R XR80R XR100R XR100 CRF50F CRF70F CRF80F CRF100F Fuel Petcock Valve Gas Tank Shut Off Switch | Replaces OEM Part 16960-GEL-701 by Robert Jaskolski

Bought because it was cheap. You get what you pay for. The fuel line nipple on the 2000 xr400 is too big. forced to turn on the line. crank the gas up and the thing pours out the face (handle) of the valve like crazy. I thought I'd just send it back. When I pulled out a gas line that was too narrow for this faucet, the nipple burst. Only then in the garbage. Oh and the o-ring was too small, had to use the old one. It is NOT meant to fit the 2000 XR70. Hope you have better luck.