Progressive Springs

[seb421]

Any one here use them?

i'm looking for front and rear springs to basically eliminate that harsh bumping you get when your at speed down the motorway and the surface has bumps in the road etc

will a progressive spring in the front and back get rid of that harshness or is that asking to much

looking at a set from hyper pro for the front and rear but i don't know anyone that uses them, i'm sure i can adjust to how they work when braking etc its just that harsh high speed bumps i want eliminated

does my wombles tits in on the GSXR as the seat is so thin hit a bit of a bump at speed and you wombles know about it and with having a bad back at the moment it wasn't to pleasant on the ride home tonight, considering sticking some car sponges down the butt in my pants tomorrow

[kitsun]

Hi seb421

Discussions on the forum seems to be mostly positive for the HyperPro and for the K Tech. But then anything is better than the original springs in the Firestorm.

My 1999 Firestorm's fork springs are totally sacked out (front sag at 55mm and i cant reduce it anymore), its on maximum preload now, any less and the forks are pretty sh1t, therefore new springs are needed. The rear shock springs seem a bit too hard for my weight (82kgs all in) as i can only achieve a rear sag of 22mm at minimum preload.

i've ordered the HyperPro progressive springs as well as the Nitron Sport rear shock. Awaiting arrival for both. Hopefully by mid March. I'll report back.

kit

[8541Hawk]

The down side to progressive springs is the difficulty in getting the valving right.

What I mean by that is which part of the spring do you set the valves for?
If set for the "soft" part of the spring, then you will not have enough damping when you get to the "hard" part.
If you set it for the stiffer section, then you are over damped in the softer bit.

IMHO the best bet is to run the correct straight rate springs and get the valving set up correctly. You can do it yourself or have someone set it up for you but it sounds like you are having issues with the high speed compression damping circuit, unless you are bottoming out on the hits you mentioned.

The other option would be to try backing off the compression damping a click or 2.

[seb421]

Thanks guys, no funking idea what I'm doing with suspension set up hawk lol it doesn't bottom out on them high speed bumps it just doesn't soak to up or move much so it's like a hard thudding, I know it can be sorted out some how because it's set up really well on my dad's 954 which feels like a magic carpet down the motorway in comparison to mine

Think I'll just have to take it to KAIS and say sort that please

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[Pete.L]

I've got Hypro pro in the front of my SP and they were a massive improvement over standard.
Very easy to set up too. The instructions which came with them were very easy to follow and all the harshness is gone from the bike.
Admittedly, the SP was under sprung (just like the Firestorm) so really it was for fixing a problem rather than just for comfort but it was a good move in my opinion.
Your problem might not be the springs though.
I would suggest, if the compression isn't wound up too tight, your rebound (return) is too quick. I've not ridden the Gixer 1000 but I've spent plenty of time on the 750 K8 and it has beautifully soft and compliant suspenders.
Get some base settings, write them down and start having a play. I like to start from a very soft setting because if feel it's safer and work my way up the scale. If you start with everything wound up hard it can make the ride very harsh and prone to tank slappers over the slightest bump.

Pete

[agentpineapple]

Leading on from what Pete said, would it be wise to have a test route, which takes in different types of road surface, after each suspension change, re ride the same route, to gauge for improvements....

[AMCQ46]

i agree with pete, the fist thing should be to set the dampers to factory settings on the GSXR

[sirch345]

I agree with what's already been said too. It's easy to think you need to replace or upgrade fork springs etc, when as you rightly said Seb, what you have may only need setting up properly. Yes, starting at factory settings is a good place to start.


Chris.

[popkat]

The suspension on The K5 is supple, it should be a nice comfy ride, they made the bike softer all round after the K4 so it would appeal to road riders more (which it did), if your experiencing harshness then somethings not right, as said above set it all back to standard, then wind your front rebound fully in then back half turn only, there's not enough rebound in the standard forks, this would show up on track but on the road it's just about ok. the rear shock is good as std. see how you go before spending money.. If it doesn't work then maybe a previous owner had it set for track or extra weight or even put the wrong amount of fork oil in ?.

[Steve6088]

Get yourself down KAIS seb. They will set your bike up for you for £50. Could ask them if this is feasible with stock springs with a gsxr

After your recommendation, I'm getting them to service my ohlins. Will get them to set the bike up too.

[seb421]

Thanks for the input guys, got no idea what I'm doing with set up wise with suspension or if I'm going the right way etc, I'll just run it down to KAIS at month end

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[8541Hawk]

Thanks guys, no funking idea what I'm doing with suspension set up hawk lol it doesn't bottom out on them high speed bumps it just doesn't soak to up or move much so it's like a hard thudding, I know it can be sorted out some how because it's set up really well on my dad's 954 which feels like a magic carpet down the motorway in comparison to mine

Think I'll just have to take it to KAIS and say sort that please

Sent from my GT-I9300 using Tapatalk

If you can check the sag and find the factory base line for the clickers, then you can try to set it before to take it in.

If you are up to those tasks we can walk you through how get the clickers set for your riding style, no worries