Thunderace fork rebuild

[to v or not to v]

one of the oil seals has a slight leak so i thought if i replace them id just as well do the springs, one of which had reached its service limit last time i checked.
YSS and Hagon springs are what i found when searching. is one better than the other? similar in price.
also am i likely to need new bushes, if so, is it worth forking out for genuine Yamaha or will generic bushes which are near half the price be ok?
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current bike Yamaha Thunderace.
Moto Guzzi V7.

[stinkwheel]

My experience is OEM bushes and seals or do it again in 12 months.

Again my experience is that getting the correct weight linear spring for your weight and riding style is better than a progressive or straight OEM replacement. To the extent you suddenly notice how badly your brakes and rear shock are set up.

So plug your details into the racetec spring calculator and it'll tell you what strength spring to use, what spacer and what fluid and air gap. Do that, set the sag and be amazed.
https://racetech.com/ProductSearch/12/Yamaha/YZF1000/1997

I fitted K-techs to my VFR last time, they are fine.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[to v or not to v]

looked at recommended YSS spring specs and the length is 282mm

stock spring is 297mm for the 96 year model (mine) and 287mm for 97 on.

is that correct and will it be just a straight swap?
____________________
current bike Yamaha Thunderace.
Moto Guzzi V7.

[stinkwheel]

CMSNL lists all years of thunderace as having the same part number.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[to v or not to v]

will a spring thats 15/5mm shorter than stock work as intended?
____________________
current bike Yamaha Thunderace.
Moto Guzzi V7.

[stinkwheel]