The Trek 3900 2009 Mountain Bike is a great bike for first time buyers, to intermediate riders, overall a great mountain bike to learn on. For the 2009 Trek 3900 Mountain Bike, you can choose from Matte Khaki and Metallic Blue/Brushed Silver. While Trek enlisted the 3900 2009 Mountain Bike as Hardtail, you can do much more. Frame sizes are 13, 16, 18, 19.5, 21, 22.5, combining with parts like Shimano and Bontrager. You can purchase the Trek 3900 2009 Mountain Bike for $439.99.

Trek 3900 2009 Mountain Bike

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Trek 3900 2009 Mountain Bike Frameset
Sizes: 13, 16, 18, 19.5, 21, 22.5″
Frame: Alpha White Aluminum w/externally relieved head tube, bi-axial down tube, disc compatible dropouts
Front Suspension: SR Suntour XCT V2 w/preload, 80mm
Rear Shock: n/a
Fork: n/a

Trek 3900 2009 Mountain Bike Wheels
Wheels: Alloy front hub, Shimano RM30 rear hub; Matrix 550 rims w/brushed sidewalls
Tires: Bontrager Connection Trail, 26×2.0″; 27 tpi

Trek 3900 2009 Mountain Bike Drivetrain
Shifters: Shimano EF50, 8 speed
Front Derailleur: Shimano C050
Rear Derailleur: Shimano Acera
Crank: SR Suntour XCC-T102 42/34/24
Cassette: SRAM PG830 11-32, 8 speed
Pedals: Nylon platform

Trek 3900 2009 Mountain Bike Components
Saddle: Bontrager Approved
Seat Post: Bontrager SSR, 20mm offset
Handlebars: Bontrager Approved, 30mm rise
Stem: Bontrager Approved, 25 degree
Headset: VP-A76C-TK, 1 1/8″ semi-cartridge, sealed
Brakeset: Tektro V w/Shimano EF50 levers