Question: ![enter image description here](https://i.stack.imgur.com/5gD4y.jpg)

![enter image description here](https://i.stack.imgur.com/EkKV6.jpg)

My second hand MTB frame has no decal on it. To me it looks like a downhill frame. I was told it's an Orange but now that I look at it I don't know how to tell. The serial number is JSG0111.

Answer: 
I locked in your FORK, but your frame could most likely be from the 1990's

SR Suntour XCM V3 Coil 26" Fork (2011)

Item Number: 100079607
Manufacturer:  

Suntour
ItemNo 100079607
Color Black
Fork Model XCM V3 coil QR-V/D fork 100mm (1" thrd-150mm NLA>
Steerer Tube 1" Threaded
Front Axle Type 9x100mm quick-release
Spring Type Coil
Brake Type rim + disc (6" PM)
Looks like a trek to me the the gusset on the bottom of the frame that is X shaped is like trek does