Alpha Gold Aluminum. I am selling my 2 years of age Trek Marlin mountain bicycle. Not doing much off roadway things these days so it is time to go. 24 speed with lockout front fork. Gary Fisher design. 29's. Dual disc brakes. New rear tire/tube & liner are less than 2 weeks old. Front tire is in excellent shape. Constantly washed after every ride and lubed every third ride. Bike is in exceptional shape. Over $750 new Frame size is 17.5 Call or text with questions. See pictures. Cash just.