Looking to upgrade your yo-yo with new strings or maybe some gloves? We’ve got you covered. At Duncan we produce only the highest quality replacement and upgrade parts. These parts are specifically designed to work well with our products, so you can be sure your getting Duncan quality.


Products 1-12 of 20


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A bundle of 100 white polyester Duncan yo-yo strings

Price: $9.95
Availability: In Stock
Item #: 3276PP-WH -

    You'll never run out of strings with this package of 100 white strings!

    A bundle of 100 yellow polyester Duncan yo-yo Strings

    Price: $9.95
    Availability: In Stock
    Item #: 3276PP-YW -

      You'll never run out of strings with this package of 100 yellow strings!

      red silver yellow green and blue Duncan yo-yo performance rings

      Price: $6.99
      Availability: In Stock
      Item #: 5161PK -

        Aluminum Performance Rings are designed for models that fit FH Zero side caps such as FH Zero, FlipSide, Raptor, Echo, Hayabusa and more! Replace side caps with Performance Rings to reduce center weight and add more rim weight for longer spins and better performance. The rings come in sets of two (2).

        Counterweight - Pink Die counterweights, dice, 5A, freehand

        Price: FREE
        Availability: In Stock
        Item #: 3605XP-20 -

          Limited edition counterweight features semi-opaque pink die with white pips! Limited time.

          Counterweight - White Die counterweights, dice, pip, pips, 5A, freehand

          Price: $3.49
          Availability: In Stock
          Item #: 3605XP-19 -

            Limited edition counterweight features opaque white die with black pips! Limited time.

            Back cover of Yo-yo Ninja DVD on the left, and front cover on right

            Price: $11.99
            Availability: In Stock
            Item #: 3172DV-IN -

              Join the Duncan® Crew™ as they teach the hottest and newest yo-yo tricks! This hour long instructional video features easy to follow tutorials for all competition styles of yo-yo play (1A, 2A, 3A, 4A, 5A) making it the most comprehensive yo-yo instructional video available!

              A chrome Konkave bearing for yo-yos

              Price: $14.00
              Availability: In Stock
              Item #: 3156KK -

                Want some extra spin time and performance? Dif-E-Yo KonKave bearings are a great way to upgrade any yo-yo. KonKave bearings keep the yo-yo's string centered at all times during play reducing friction against the yo-yo's body. Available in two sizes Size A and Size C (small & large) and made from stainless steel. These bearings a must for any pro player! US Patent #7175500

                A chrome Konkave bearing for yo-yos

                Price: $14.00
                Availability: In Stock
                Item #: 3155KK -

                  Want some extra spin time and performance? Dif-E-Yo KonKave bearings are a great way to upgrade any yo-yo. KonKave bearings keep the yo-yo's string centered at all times during play reducing friction against the yo-yo's body. Available in two sizes Size A and Size C (small & large) and made from stainless steel. These bearings a must for any pro player! US Patent #7175500

                  A blue light up die shaped counterweight for Duncan yo-yos

                  Price: $4.99
                  Availability: In Stock
                  Item #: 3164PK -

                    Duncan® Light-Up Counterweight features dual light emitting LEDs that produce a bright blue glow. Power is activated/de-activated with the press of a button. Perfectly weighted for counterweight play!

                    A bottle of looping oil

                    Price: $5.70
                    Availability: In Stock
                    Item #: 3182OI -

                      Performance oils enhance the play of looping and long spinning yo-yos! Modern yo-yos use ball-bearing axles which over time suffer from decreased spin times or low response due to the lack of lubrication. These oils have been formulated to increase the performance of ball-bearing yo-yos and are available in two varieties: Spin and Looping Oil.

                      Duncan Racer Caps in packaging

                      Price: $4.99
                      Availability: In Stock
                      Item #: 5163PK-IND -

                        Performance meets style: Interchangeable Racer Caps allow you to add weight to your yo-yo and increase your spin time. Pop in the spoked cap for a wheel-like effect or pop in the innovative "e;finger spin"e; cap for an all-new take on your favorite yo-yo.

                        Retro Butterfly Shirt, Pink Pink, t-shirt, retro, butterfly, tshirt, shirt, girl, women's, women

                        Price: $14.99
                        Availability: In Stock
                        Item #: 3140GS -