Barely utilize 2012 Trek 3900 D size 16. This is just taking up space and have to go. I had most likely ridden this bike less than 8 times given that I purchased it. Iphone and case not consisted of.

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　　Information:.

　　With a 24-speed Shimano drivetrain The Trek 3900 D 2012 Mountain Bike is still lightweight, yet durable, 100mm suspension fork with preload adjust allows fine tuning to a rider's weight. Mechanical disc brakes give predictable efficiency in all conditions.

　　Frame:.

　　Alpha Silver Aluminium w/semi-integrated head tube, bi-oval down tube w/integrated rack, gusset & fender mounts, disc suitable dropouts, changeable derailleur hanger.

　　Fork:.

　　SR Suntour XCM w/30mm stanchions, coil spring & preload, 100mm travel.

　　Front Derailleur:.

　　Shimano Altus.

　　Rear Derailleur:.

　　Shimano Acera M360.

　　Number of Gears:.

　　24.

　　Shifters:.

　　Shimano EF51, 8 speed.

　　Chainset:.

　　Shimano TX M171, 42/34/24.

　　Cassette:.

　　Shimano HG31 11-32, 8 speed.

　　Pedals:.

　　Wellgo nylon platform.

　　Front Brake:.

　　Tektro Novela mechanical disc brakes.

　　Rear Brake:.

　　Tektro Novela mechanical disc brakes.

　　Brake Levers:.

　　Shimano EF51 levers.

　　Handlebars:.

　　Bontrager Riser, 25.4 mm, 30mm rise.

　　Stem:.

　　Bontrager Forged, 25.4 mm.

　　Headset:.

　　1-1/8" threadless.

　　Grips:.

　　Bontrager SSR.

　　Rims:.

　　Bontrager 550 36-hole rims w/brushed sidewalls.

　　Front Hub:.

　　Formula DC20 alloy front hub.

　　Rear Hub:.

　　DC22 alloy rear hub.

　　Front Tyre:.

　　Bontrager LT3, 262.0″″.

　　Rear Tyre:. Bontrager LT3, 262.0″″.

　　Saddle:.

　　Bontrager SSR.

　　Seatpost:.

　　Bontrager SSR, 31.6 mm, 20mm offset.

　　Weight:.

　　Not Specified.