Fork seals 41mm showa

[jerry]

Replacing fork seals in some Ducati 750ss 1991 showa forks ,, last ones i fitted were NOK japan supposed to be best and what Showa use , but one has leaked after 6000 miles now have a set of Italian made Athena seals , are they OK ???

I normally put 5w oil in these forks, they are non adjustable but work really well , from standard they have progressive springs which is interesting .

[Darren69]

Probably no useful info but I've never had to replace a fork seal on Showa usd forks due to leaks, the forks on the S4 were replaced as a matter of course since I had them apart to change the springs and the outer dust seals were looking a bit perished but did not leak.

[slob]

FWIW I believe Athena manufacture gaskets for Ducati

[jerry]

Yes Thats what I heard too , I will use the Athena seals ,,with 5w oil

I always though Ducati used linear fork springs but seems in some older models they used progressive fork springs ..

[crawsue]

From memory the Sachs shock spring on the Evo is progressive….one of the many suspension “issues” from stock…..:nash: