KTM Duke 390 Servicing and Accessories: Front and Rear Sprocket





One of the easiest ways to give your bike snappier acceleration and increase its power is a simple sprocket change. It boils down to the gearing ratio. Simply put, the gearing ratio is the ratio of teeth between the front and rear sprockets, which determines how engine RPM is translated into wheel speed. By changing the sprocket size, be it front or rear, the gearing ratio can be changed accordingly.

For our customer’s KTM Duke 390, we used the KTM Powerpart rear sprocket, which promises the ultimate in quality and performance. Featuring high-strength alloy, the KTM Powerpart rear sprocket has at least three times longer service life than other aluminium rear sprockets. And that’s not it… Besides being joined together permanently with high-strength rivets, it is only half as heavy as conventional steel rear sprockets.

We also replaced the front sprocket, DID X-Ring chain and bikers chain guard. With wear resistance being twice as long, the DID X-Ring chain is recommended for reducing power loss and friction. Unlike normal O-Rings, the DID X-Ring chain twists between the sides plates instead of being squashed. This twisting action of the X-Ring disperses the pressure and minimises power loss. The X-Ring’s four contact points also greatly increase its sealing performance and keeps the dirt out and the lubrication in much better than any other O-Ring.

Check out our full range of motorbike accessories available online or drop by Speedzone to find out more about our KTM Duke 390 servicing packages!

7 Response Comments

  • michael terceroMay 23, 2016 at 7:25 am

    Which front sprocket and chain guard did you use on DUKE 390? You did not specified the brand or leave a link, besides how many teeth does the rear sprocket have that you used on pictures?

    Thank you

  • Huilin ChuaJune 1, 2016 at 6:24 am

    Hi Michael, thank you for your comment. We used the DID X-Ring chain and KTM Powerparts rear sprocket, which has 42 teeth. Do let us know if you need more details!

  • Huilin ChuaJune 1, 2016 at 6:25 am

    Sorry Michael, we meant 45 teeth. Thanks!

  • GordonJune 4, 2016 at 7:48 am

    Hello sir, how much do you charge for this sprocket change? Inclusive of labour please. Thank you so much.

    • Romarie Shayne EsguerraSeptember 7, 2016 at 12:49 pm

      Hey Gordon,

      Thanks for your comment : )

      For the front sprocket it is roughly $51 and for the rear it ranges from $69-136 depending on the brand .

      Feel free to let us know, if u need more details!
      Would be best too if you can swing by to our shop too!

      Cheers : )

  • JonathanOctober 23, 2016 at 2:28 am

    Hi I’m looking in to doing the same swap with my rc 390 I see that you used a 520 chain but how many links is the chain

  • MohanaranganJune 5, 2017 at 1:08 pm

    I want 15t front sprocket and 39t rear sprocket for My duke 200 2016 model
    Can Pulsar 200 ns rear 39t sprocket fit into duke 200
    And duke 390 front 15t sprocket for My duke 390
    Is this possible…..
    Please reply


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