Yet another fork spring option - Yacugar?
 

Just shy of 18000 miles on the Z and it�s time to sort the ailing suspension.

Took a ride out to FTR suspension in Bury St. Edmunds and had a lengthy chat mainly about improving the forks (already decided to plump for a Nitron shock). I initially went to buy a set of Ohlins springs, but they only make the 0.60N/mm version now (0.50N/mm discontinued), which they suggested may be a bit stiff for my weight and difficult set up with enough rider sag. I was guided towards Yacugar progressive springs which have a maximum rate of 0.79N/mm and a start rate of 0.51N/mm, which would suit my needs. I didn�t buy any though, because they are cheaper on-line!

Obviously FTR are well renowned suspension gurus and know their stuff (their workshop is an impressive sight too), so I trust their judgment and the kit is �108 including oil, VAT and delivery in the UK and you get a free T-shirt too if you order online, which is a much better price than I can find Hyperpros for. The questions before I click the buy button are: Has anybody had experience of Yacugar suspension on here? How do the spring rates compare with the Hyperpro (or Wilbers for that matter)?

They're good...
 

Fitted the Yacugar fork springs yesterday and they are a revelation, which is to be honest kind of what I expected since the originals were a soggy mess! Did about 50 miles on road and about 5 off to test things out. I still have the flaccid OE shock , so today I decided tweak things and drop the legs in the yokes 5mm to compensate for the slightly tail-down attitude. Doesn't sound much, but it has made a further big difference the feel and feedback of the whole bike, particularly the steering on the road. Might slide them back when the new shock arrives? Although I was going to go for a Nitron (offer on at HPS for half-price hydraulic preload adjuster http://www.bikehps.com/nitron/), I might now go for an Ohlins from FTR who've got a trade in offer with the old shock? ( http://www.ftrsuspension.co.uk/exchangescheme.htm)

Just a couple of notes for those who might consider Yacugar fork springs as an alternative to the other brands available: FTR/Yacugar recommend 500cc (SAE 15) oil, rather than the OE spec 650cc. The spring free length is about 40mm longer than OE, but they are fitted with the spacers.