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Trek 3900 Disc
  • Color: Chi Red
  • Color: Matte Metallic Black

Trek 3900 Disc

2012

Product Rating
 
4.5 stars
 (20 Reviews)
$649.99
Availability: Check Store Availability
  • Once you've completed the transaction, we'll contact you regarding delivery and sizing to ensure your overall satisfaction. This item can be purchased online and picked up at your convenience.
 

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.

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  • Part Numbers close open

    Option Barcode Manufacturer's Part Number Store SKU
    Chi Red / 13-inch 00768682154588 10176100312
    Chi Red / 16-inch 00768682154663 10176101312
    Chi Red / 18-inch 00768682154724 10176102312
    Chi Red / 19.5-inch 00768682154809 10176103312
    Chi Red / 21-inch 00768682154885 10176104312
    Chi Red / 22.5-inch 00768682154960 10176105312
    Matte Metallic Black / 13-inch 00768682154564 10176100212
    Matte Metallic Black / 16-inch 00768682154649 10176101212
    Matte Metallic Black / 18-inch 00768682154700 10176102212
    Matte Metallic Black / 19.5-inch 00768682154786 10176103212
    Matte Metallic Black / 21-inch 00768682154861 10176104212 390437660522
    Matte Metallic Black / 22.5-inch 00768682154946 10176105212
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  • Consumer Reviews close open

    REVIEW SNAPSHOT®

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

    (based on 20 reviews)

    95%

    of respondents would recommend this to a friend.

    Write a Review

    Pros

    • Handles well  (16)
    • Lightweight  (12)
    • Durable  (10)
    • Good Geometry  (7)
    • Comfortable  (6)

    Cons

    • Heavy  (3)
    • Uncomfortable seat  (2)
    • Poor Components  (2)
    • Pedals are horrible 
    • Brakes 

    Best Uses

    • Trail riding  (9)
    • Urban riding  (7)
    • Climbing  (5)
    • Descending  (5)
    • Casual Trails  (5)

    Reviewed by 20 customers

    Sort by

    Displaying reviews 1-10

    Previous | Next »

     
    5.0

    Great bike for a new start

    By DonRyan

    from Elkton, MD

    About Me Casual/ Recreational

    Pros

    • Durable
    • Handles Well
    • Lightweight

    Cons

    • Uncomfortable Seat

    Best Uses

    • Climbing
    • Descending
    • Trail Riding
    • Urban Riding

    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

    Awsome

    By Frankenstu

    from Overland Park, Kansas

    About Me Casual/ Recreational

    Pros

    • Lightweight
    • Versatile
    • Durable
    • Smooth operation

    Cons

      Best Uses

      • Mountain Biking
      • Road 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
       
      5.0

      2011 39 series is "da bomb"

      By A.D.

      from Elkins, West Virginia

      About Me Avid Cyclist

      Pros

      • Comfortable
      • Lightweight
      • Durable
      • Handles Well

      Cons

      • Poor Tires

      Best Uses

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

      Comments:

      Great ride on roads, gravel and dirt. All around awesome! Love the addition of Disc brakes.

      • Gift:
      • No
       
      5.0

      Love it! And looks AWESOME...

      By JC

      from San Diego

      About Me Avid Cyclist

      Pros

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

      Cons

        Best Uses

        • Trail Riding

        Comments:

        Love this bike. Looks and rides great! I use it to go on intermediate trails in the dirt/mountain trails. Handles well and light. Awesome value.

        • Gift:
        • No
         
        4.0

        The Best Bike Ever Bought

        By scotty

        from columbia md

        About Me Casual/ Recreational

        Pros

        • Price good
        • Lightweight
        • Rides smoth

        Cons

        • None

        Best Uses

        • Trails
        • Everything
        • Trail riding

        Comments:

        I just bought this bike today i love it its a good bike

        • Gift:
        • No
         
        4.0

        Great bike for the price!

        By Jose

        from Houston, TX

        About Me Casual/ Recreational

        Pros

        • Handles Well
        • Durable
        • Good Geometry

        Cons

        • Poor Components

        Best Uses

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

        Comments:

        The bike is great for what you pay. I own the Matte Black 2009 version. Only a couple of things I would recommend updgrading. First, the plastic (no-grip) pedals. Shimano clipless work great once you get the hang of them. Second, the disc brakes. Avid disc brakes are exceptional. Enjoy the trails!

        • Gift:
        • No
         
        5.0

        Awesome bike!

        By Solem

        from EGF

        About Me Casual/ Recreational

        Pros

        • Handles Well
        • Fast fun
        • Lightweight
        • Durable

        Cons

        • Grips
        • Peddles
        • Uncomfortable Seat

        Best Uses

        • Urban Riding
        • Snowbiking
        • Trail Riding
        • Climbing
        • Descending

        Comments:

        I thought it was a great bike for some reason the grips ripped off mine. But i replaced the peddle to racing Bearclaws and its been bullet proof ever sense!

        • Gift:
        • No
         
        5.0

        Great bike to start with...

        By CBrown

        from Orlando, FL

        About Me Casual/ Recreational

        Pros

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

        Cons

          Best Uses

          • Urban Riding
          • Trail Riding

          Comments:

          This was my first step into mountain biking and from the staff at David's World Cycle it was a great help and didn't just look for the big dollars but a bike that would work for me.

          • Gift:
          • No
           
          4.0

          Great Entry Level Bike

          By gotjf

          from Chula Vista, CA

          About Me Avid Cyclist

          Pros

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

          Cons

            Best Uses

            • Urban Riding
            • Trail Riding

            Comments:

            I just bought this bike three weeks ago, and have been hitting the local trails hard. So far so good. Perfect for someone with biking skills but it has been awhile, or just starting out. This is my first Trek, can't wait to upgrade in the future. Also I got the Matte Black, very smooth looking.

            • Gift:
            • No
             
            4.0

            Solid Bike

            By Force

            from Houston

            About Me Casual/ Recreational

            Pros

            • Handles Well
            • Rugged

            Cons

              Best Uses

              • Cross Country
              • Casual Trails

              Comments:

              I chose to go with the disc brakes, but they leave a little to be desired. I'm 6'2" and 270. I was expected more "stop" from the discs. Other than that it is a blast to ride

              • Gift:
              • No

              Displaying reviews 1-10

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