Suspension help
Author
Discussion

SAS Tom

Original Poster:

3,755 posts

205 months

Wednesday 25th July 2018
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My Dad has bought a Suzuki GS250T which I’m doing some light restoration work on. I need some help with what to do with the forks. They’re only weedy things and my dad is over 20 stone so I doubt the current set up is going to work for him. I’m not after race track performance just for it not to be a soggy mess for a heavy rider.

Ideally I would like some stiffer springs but by the looks of it no one seems to offer them. Anyone any ideas of where I could get some from? Can people make custom ones? If so, where? If not would making preload spacers be a good idea?

I would like to change the oil in the forks too but not sure what to do. Suzuki spec either fork oil (no mention of what weight) or a 50/50 mix of 10w30 engine oil and ATF. Anyone know what weight Suzuki fork oil is? Most bikes I’ve had have used 10w fork oil, would 20w do the job? Or would a 50/50 mix of a heavier weight engine oil say 20w50 and ATF be a better option?

Mr OCD

6,388 posts

242 months

Wednesday 25th July 2018
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Try KAIS Tom for springs ... they can get some made / ordered for you to correct spring rates.

NS400R

507 posts

190 months

Wednesday 25th July 2018
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I'd agree. KAIS are really good and helpful.

graeme4130

3,955 posts

212 months

Wednesday 25th July 2018
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Yeah, I'd recommend speaking with Kais too. They're a good bunch and can source custom springs for pretty much any application
https://www.kais-ohlins.co.uk

Kais Suspension Services Ltd.
Punchbowl Garage
Atherton
Greater Manchester
M46 0LT
Telephone
+44 (0) 1942 896366

Fax
+44 (0) 1942 886311

moto_traxport

4,264 posts

252 months

Wednesday 25th July 2018
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Racetech do springs by size o/d, spring rate and you get a length of spacer tube to cut to the approprate length(s).

Have a look on their website, they might even put that bike (or something similar) into their spring rate configurator.

bogie

17,105 posts

303 months

Wednesday 25th July 2018
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Depending where you are, I can recommend speaking to Gareth at Reactive Suspension, just North of York . They can do everything from springs to a full service/rebuild with whatever you like. Just had my forks done and they are better than new.

http://www.reactivesuspension.com/index.php