this is the only place I know of, and I don't think you'll like these prices.
There's more if you scroll to the bottom.
https://www.battlescooterstore.com/sess/utn;jsessionid=154ef61402e9e2d/shopdata/0210_Ruckus+=26amp=3Bslash=3B+NPS50/0015_Suspension/product_overview.shopscript