Seadoo RX/RDI Sponsons



Want to revive your old ski? Looking for a way to reignite your passion for the water? Look no further than Worx WR521 Sponsons!

Made for Seadoo RX/RDI models, these sponsons have been specifically designed to improve the handling performance of your Seadoo jetski. 

In testing we discovered that this ski lacked directional stability at speed in choppy water conditions and has a bad tendency to over steer. Turning sharply, the OEM sponsons bite and spin the boat into a hard turn that you can't pull out of. Worx sponsons put you back in control and make the RX/RDI skis a pleasure to ride.

All Worx Sponsons are designed and manufactured in our Australian warehouse on the Gold Coast, so when you buy Worx Sponsons, you can be sure that you're supporting an Australian owned business. 


  • Improved direct response in cornering
  • More predictable handling
  • Greater straight line stability
  • Made in Australia


  • 2 x Backing Rails
  • 2 x Paddles
  • All Fasteners Needed

Can change a tyre15 Minutes

Note: Before purchasing, check below that your OEM sponson mounting bolts match the backing rail bolt layout pictured below.