Hello Everyone!

Hi & welcome

The 990 SD with Akra's sounds awesome, it's one of the things I like it for.

£3500 is a bit low to be honest, you'll be looking at early ones (first gens) but to be honest you really want to be getting the face lifted version with the larger fuel tank, nicer headlight and more modern dash, and sometimes a black swing arm.
I think that is '07 onwards.

Full Akra's only came on 2007-2008 SDR's (I think), assume everything else just has rear slip on's. You might find an SD (non-R) with a full system, and if so it'll be written on it. Also newer SDR's don't have the better engine and exhaust.

Recalls - dunno.
Chain maintenance is nothing special, ABBA stand or paddock stand help.
Service history - all paper I'd say as many won't have kept up main dealer servicing.

Issues - water pump seals can fail at around 15-20K miles (mine went at 14k).
Valve clearances need checking every 9,300 miles (after the 1st service), so say at 10,000, 19,000, 27,000 miles - check it's been done.

Here is some good reading about the model history.

viewtopic.php?f=1&t=18764

and here

https://ktmmad.wordpress.com/tag/histor ... uper-duke/