Best fork springs for curvy?

im very near to changing oil and seals on my front forks, whilst im there im going to replace the springs, has anyone got any experience of the ohlins springs available from jhs racing? any advice on what else to use?

[andrewsmith]

what weight are you without leathers?

Ohlins and K-techs are the same virtually quality wise. SV650Racer on here will be able to give you a little bit of discount.

I've got the k-techs as they're cheaper than the ohlins and in stock in the UK most of the time, the ohlins you way weight a few weeks for.

I've got K-techs with Putoline race susp fluid and there ok.

Linear steel ones FTW

Im 67kg and looking to prep the bike for a few track days this year,

Linear and get on to one of those spring calculation websites, I'm sure someone will be along with a link soon as to what rate you need. Go for the later curvy ones and fit a set of preload adjusters to make adjusting the preload easy. Some thicker fork oil and you'll be fine on a track day.

[andrewsmith]

Originally Posted by Tim in Belgium

Linear and get on to one of those spring calculation websites, I'm sure someone will be along with a link soon as to what rate you need. Go for the later curvy ones and fit a set of preload adjusters to make adjusting the preload easy. Some thicker fork oil and you'll be fine on a track day.

Tim the wise budda follow his tips

Spring weight you'll be looking at 0.8 to 0.85 kg/mm
15w oil too

Is it dangerous to only upgrade the front? I just read this:-

Does this require changing the rear shock as well to maintain balance between the front/ rear?
Yes. If you stiffen up the front end w/o increasing the rear ride height you will find that the bike has way too much weight on the back of it. As you get moving quickly (100? mph or so...) the bike will start wobbling, then headshaking. Bad. Very bad. When I bought my bike it was stock, it was friday pm, and I was racing the next day. Added preload to the front forks to get the proper sag. It wobbled BAD. Dropped the front ride height, and it still wobbled. Played around in EVERY morning session (****ed off race control..) trying to get the bike to work, then I gave up and put it back to stock preload and ride height and it stopped wobbling.

[andrewsmith]

Originally Posted by Jordy

Is it dangerous to only upgrade the front? I just read this:-

Does this require changing the rear shock as well to maintain balance between the front/ rear?
Yes. If you stiffen up the front end w/o increasing the rear ride height you will find that the bike has way too much weight on the back of it. As you get moving quickly (100? mph or so...) the bike will start wobbling, then headshaking. Bad. Very bad. When I bought my bike it was stock, it was friday pm, and I was racing the next day. Added preload to the front forks to get the proper sag. It wobbled BAD. Dropped the front ride height, and it still wobbled. Played around in EVERY morning session (****ed off race control..) trying to get the bike to work, then I gave up and put it back to stock preload and ride height and it stopped wobbling.

I've never had that above 100mph with me stock shocker.

Had impressive controllable wheelies off big crests

im up for changing the rear too, thats why credit cards were invented and why im doing lots of overtime at present lol

[andrewsmith]

Haha

What you budget for the rear?