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

Trek

3900 Disc
2012

Product Rating
 
4.5 stars
 (35 Reviews)
 

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.

 
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.

REVIEW SNAPSHOT®

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

(based on 35 reviews)

94%

of respondents would recommend this to a friend.

Pros

  • Handles well  (33)
  • Durable  (29)
  • Lightweight  (26)
  • Good Geometry  (24)
  • Comfortable  (23)

Cons

  • Uncomfortable seat  (7)
  • Poor Components  (6)
  • Poor Tires  (4)
  • Poor Pedals 
  • Pedals 

Best Uses

  • Trail riding  (25)
  • Urban riding  (25)
  • Climbing  (19)
  • Descending  (17)
  • Single Track  (16)

Reviewed by 35 customers

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Displaying reviews 1-10

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4.0

A bit of a wolf in the wrong clothing

By Allan S

from Scotland UK

About Me Casual/ Recreational

Pros

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

Cons

  • Pedals

Best Uses

  • Urban Riding
  • Trail Riding
  • Single Track

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

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

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

      • Lightweight
      • Handles Well
      • Durable

      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

      Hills, thrills, without much bills!

      By 4Feb73

      from Malta, Europe

      About Me Casual/ Recreational

      Pros

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

      Cons

        Best Uses

        • Trail Riding
        • Green Laning
        • Urban 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

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

        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
          • Comfortable
          • Handles Well

          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

          • Lightweight
          • Versatile
          • Durable
          • 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

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

            Cons

              Best Uses

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

              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

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

              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

                • Lightweight
                • Durable
                • Handles Well
                • Comfortable

                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

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                  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.

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