Ohlins TTX36 rear shock, model ho6060. Direct fit to 2006/7 Blade. Can also be used on 2005/6. Serviced by Parkitt in 2018 and again by RD Performance for the beginning of last year. The TTX shock is a twin-tube damper system with adjusters for high/low-speed compression, rebound adjustment and a remote preload adjuster. Comes setup for a 14st rider and with a spare spring. £500 + postage, or collect from Lincoln or track side.
Next track day is Donington on Oct 5th, then I'm looking at Nov 1st Brands Hatch and Nov 9th Oulton Park depending on the weather.
Oddly I was chatting to the Padgetts tyre guy at the BSB yesterday. He said they have issues with Thruxton as it's so bumpy. It's too far for me though as a non MSV track.