Find a location near you Join our email list for events, specials and news Follow Us on Twitter Find Us on Facebook
Trek Bicycle Stores
Hot Deals Low Price Guarantee Free Shipping on orders over $100
Trek Bicycle Store: Top 15 Trek Dealer in the USA. Independently Owned, Passionately Operated by Midwest Cycling
 
 
 
 
Trek 3900 Disc

Trek 3900 Disc

2012

Product Rating
 
4.5 stars
 (68 Reviews)
 

Product Details

2012 Trek 3900 Disc

Whether you're cruising the local trails or simply enjoying streets and bike paths for fitness and fun, the 3900 Disc is the perfect ride. Trek's Silver aluminum frame is light, tough and responsive, and you'll love the bump-busting 100mm-travel suspension fork. This sweet machine boasts an easy-pedaling 24-speed drivetrain that makes easy work of the hills and powerful mechanical-disc brakes to perfectly modulate your speed. The 3900 will bring you cycling joy for years to come.

 
  • Specifications close open

    Specification Description
    Frame Trek Alpha Silver Series aluminum
    Fork SR SunTour XCM, 100mm-travel
    Rims/Wheels Bontrager 550
    Hubs Formula
    Spokes 14-gauge stainless-steel
    Tires Bontrager LT-3, 26 x 2.0
    Crankset Shimano
    Chainrings 42/34/24
    Front Derailleur Shimano Altus
    Rear Derailleur Shimano Acera
    Rear Cogs Shimano, 8-speed: 11-32
    Shifters Shimano EF51
    Handlebars Bontrager
    Tape/Grips Bontrager SSR
    Stem Bontrager
    Brake Levers Shimano EF51
    Brakes Tektro Novela mechanical-disc w/6-inch rotors
    Pedals Wellgo nylon platform
    Saddle Bontrager SSR
    Seatpost Bontrager SSR

    * Subject to change without notice.

    Back to top
  • Consumer Reviews close open

    REVIEW SNAPSHOT®

    by PowerReviews
    --- [ Replace PRoduct Name ] ---
     
    4.5 stars

    (based on 68 reviews)

    92%

    of respondents would recommend this to a friend.

    Pros

    • Handles well  (58)
    • Durable  (45)
    • Lightweight  (44)
    • Good Geometry  (43)
    • Comfortable  (41)

    Cons

    • Poor Components  (14)
    • Uncomfortable seat  (11)
    • Poor Tires  (5)
    • Heavy  (5)
    • Pedals are horrible 

    Best Uses

    • Urban riding  (39)
    • Trail riding  (34)
    • Climbing  (29)
    • Descending  (26)
    • Single Track  (22)

    Reviewed by 68 customers

    Sort by

    Displaying reviews 1-10

    Previous | Next »

     
    4.0

    A bit of a wolf in the wrong clothing

    By Allan S

    from Scotland UK

    About Me Casual/ Recreational

    Pros

    • Durable
    • Handles Well
    • Comfortable
    • Cost
    • Good Geometry

    Cons

    • Pedals

    Best Uses

    • Urban Riding
    • Single Track
    • Trail Riding

    Comments:

    I have happily been the owner of the 3900D for about 8 months, mostly off road/single trak riding, but the occasional long distance ride, so far its held up well. comfortable and responsive. considering the price this bike punches well above its weight, I changed the pedals though to pegged flats, though that was purely a personal choice really, In reality for an off the shelf bike in this price range. your will be hard pushed to find a better bike,

    • Gift:
    • No
     
    4.0

    Nyc

    By Nahid Rahman

    from Dhaka, Bangladesh

    About Me Commuter

    Pros

    • Comfortable
    • Good Geometry
    • Lightweight
    • Durable
    • Handles Well

    Cons

      Best Uses

        Comments:

        *Speed - Great *Weight - Great *Style - Average *Brake - Needs to be better *Handling - Good *Comfort - Yes.. In short, GOOD

        • Gift:
        • No
         
        5.0

        Great bike for a new start

        By DonRyan

        from Elkton, MD

        About Me Casual/ Recreational

        Verified Reviewer

        Pros

        • Handles Well
        • Lightweight
        • Durable

        Cons

        • Uncomfortable Seat

        Best Uses

        • Descending
        • Urban Riding
        • Trail Riding
        • Climbing

        Comments:

        After not having a bike for the longest period of time, I finally decided it was time to get back out there. Read about this bike and figured it may be the best suited for me. I took it out for a quick spin on the road and it handled well enough for me. Took it on some trails and it was definitely worth the price. The only complaint that I have is the seat. I can't think of many bikes with a truly comfortable seat. Nevertheless, I can't stop riding it.

        • Gift:
        • No
         
        5.0

        Hills, thrills, without much bills!

        By 4Feb73

        from Malta, Europe

        About Me Casual/ Recreational

        Pros

        • Eye Catching
        • Durable
        • Handles Well
        • Lightweight
        • Good Geometry

        Cons

          Best Uses

          • Urban Riding
          • Green Laning
          • Trail Riding

          Comments:

          When introduced to Trek family I was confused which models are suitable for me! Short listing the hard tails, I started looking at the 3 series (cos was afraid of maintaining hydraulic brake systems). When finally I decided, my wife just gave me a 3900disc as a present instead of a 3500disc! better ehh? Using it a a weekend exercise breaktime, gave me a lot of a new world in the countryside. Thanks also to our local dealer who patiently explained each and every component of various Trek models!

          • Gift:
          • No

          (2 of 2 customers found this review helpful)

           
          5.0

          Trek 3900 D

          By MPH1979

          from Derby, England

          About Me Commuter

          Pros

          • Fast
          • Lightweight
          • Good Geometry
          • Durable
          • Comfortable
          • Handles Well
          • Responsive

          Cons

            Best Uses

            • Descending
            • Trail Riding
            • Climbing
            • Urban Riding

            Comments:

            This is my first Trek I have owned after hearing off a friend how robust and strong the frames are.I do about 70 miles a week which includes cycling to work and using at the weekend.This bike so far has been awesome,the geometry is perfect for all occasions.Average components for the price but still work great,suspension forks work well for road and light trail use.All in all a good entry level bike to get started on, and i know ill personally be progressing through to the higher models of Treks bikes as my confidence grows in mountain biking! thanks Trek.

            • Gift:
            • No

            (1 of 1 customers found this review helpful)

             
            5.0

            Great bike for urban riding

            By Luis Martin

            from Bogota, Colombia

            About Me Casual/ Recreational

            Pros

            • Durable
            • Handles Well
            • Comfortable

            Cons

            • Poor Components

            Best Uses

            • Urban Riding

            Comments:

            I drive every day for going to my office. It is great fun, even when it is raining!

            • Gift:
            • No
             
            5.0

            Awsome

            By Frankenstu

            from Overland Park, Kansas

            About Me Casual/ Recreational

            Verified Reviewer

            Pros

            • Versatile
            • Durable
            • Lightweight
            • Smooth operation

            Cons

              Best Uses

              • Road Biking
              • Mountain Biking

              Comments:

              I upgraded from a $120 department store bike. It has been a while since I had a good bike and didn't want to break the bank. I highly recommend this bike. Decent components (Not top of the line but far superior to what I had). With this bike I can go twice as far as with my old bike. Much lighter and you are not fighting the resistance of bad brakes, hubs excreta. My neighbor is an avid bicycler and was impressed by how light weight the bike was. Shifting has never been smoother. Awesome entry level bike that will surely last a long time. Got it in Chili Red and it looks awesome.

              • Gift:
              • No

              (1 of 1 customers found this review helpful)

               
              4.0

              Happy with this bike

              By Jojo

              from Duesseldorf Germany

              About Me Avid Cyclist

              Pros

              • Lightweight
              • Durable
              • Good Geometry
              • Handles Well
              • Comfortable

              Cons

                Best Uses

                • Urban Riding
                • Descending
                • Climbing
                • Trail Riding
                • Single Track

                Comments:

                I have been using this bike for weekend trekking and a general run around. I have also experienced the squeaky brakes issue, but this was quickly resolved by putting shoe polish on the disk and rotating a few times. Besides that, I am pretty happy with this bike.

                • Gift:
                • No
                 
                5.0

                First Rate Bike

                By chuckieb

                from Texas

                About Me Avid Cyclist

                Pros

                • Handles Well
                • Durable
                • Good Geometry
                • Comfortable
                • Lightweight

                Cons

                  Best Uses

                  • Urban Riding

                  Comments:

                  Ran 13 marathons and am now transitioning to biking. This bike does the trick! I ride in town on streets without much traffic, and this bike performs exceptionally well. I am riding twice a day for an hour each ride, and I couldn't be more pleased with this bike.

                  • Gift:
                  • No
                   
                  4.0

                  Sweet bike

                  By Kidd

                  from Huntington park ca

                  About Me Casual/ Recreational

                  Pros

                  • Handles Well
                  • Comfortable
                  • Lightweight
                  • Durable

                  Cons

                    Best Uses

                    • Urban Riding

                    Comments:

                    Soon as you ride this bike you will be a happy camper you get what you pay for trek makes some great bikes I know this will not be my last trek I buy !!

                    • Gift:
                    • No

                    Displaying reviews 1-10

                    Back to top

                    Previous | Next »

                   
                  Trek Bicycle Store

                  The Independently Owned Trek Bicycle Stores of Omaha, Kansas City and St. Louis are committed to your complete satisfaction.

                  Please contact us if there is anything we can do to enhance your cycling experience.
                  ABOUT US OUR STORES STEWARDSHIP PARTNERS
                  Commitment to You
                  Rental Bikes
                  Service & Repair
                  Bike Fitting Services
                  Privacy Policy
                  Shipping Information

                  SHOP ONLINE 24/7

                  Visit our online store
                  and shop anytime! Plus,
                  get FREE shipping on
                  orders of $100 or more!

                  Shop Online Now



                  Our Locations & Hours
                  Career Opportunities
                  Social Media
                  Store Group Rides
                  Join Our Email List

                  SHARE FEEDBACK

                  Take a brief survey to helpus serve you better.
                  Feedback
                  Trails Have Our Respect Trailnet League of American Bicyclists
                  Bike Walk KC Earn Your Dirt People for Bikes
                  Gateway Off-Road Cyclists Live Well Omaha IMBA
                  Independently owned, passionately operated by Midwest Cycling OMAHA KANSAS CITY ST. LOUIS
                  PAPILLION
                  8410 South 73rd Plaza
                  Papillion, NE 68046
                  (402) 935-1988
                  MIDTOWN
                  7214 Jones Street
                  Omaha, NE 68114
                  (402) 884-1820

                  SHAWNEE
                  10412 Shawnee Mission Pkwy
                  Shawnee, KS 66203
                  (913) 631-6800
                  INDEPENDENCE
                  18675 E. 39th Street South
                  Independence MO 64057
                  (816) 886-5650
                  BALWIN
                  13922 Manchester Road
                  Ballwin, MO 63011
                  (636) 394-2453
                  ARNOLD
                  2194 Michigan Avenue
                  Arnold, MO 63010
                  (636) 287-6700