Unfortunately things have changed with Koni. Their authorized service facility is now a race shop in Northern Calif; Performance Shock Inc at Sonoma Raceway. And that facility will not sell parts, only provide the service themselves (for a price). Before this you could buy new seals direct from Koni, however they were very difficult to install. They are not typical lip seals, but a propiarity design.
There are other shops that do Koni service work such as TrueChoice, but Koni doesn't officially list them (that may be why TrueChoice was trying to drum up business). Some companies say they are "authorized", however according to the Koni reps I speak to at SEMA every year they are not (I'm not sure why the discrepancy). And I seriously doubt any of the independent shops like TrueChoice will sell parts either, as they were never in the Koni parts business (they always referred you to Koni directly). Shock oil is not considered a replacement part, and you can buy it very affordably from motorcycle parts suppliers. So it appears the individual seals are no longer available...at least not the top seal. The other seals inside the unit are typical items available from standard commercial seal suppliers.
Basically Koni is moving away from "self servicing" and pushing everyone to pay for professional work. Bilstein has done the same. Their US headquarters and central service facility in San Diego used to be accessible to anyone. No longer true. Now you must go through a retailer for service. And the policy is to buy new ones, submit your old units for examination, and you will be reimbursed if they deem your old ones were covered (they have a million mile lifetime warranty).
