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Offline biker den

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Öhlins upgrade on ST08, need help
« on: April 14, 2019, 11:04:44 PM »
Hi guys,
I want to buy Öhlins Daytona 675R(11-12) rear shock from a member on forum and fit it on ST (08). I have read that it is not an issue to fit it at all. And is a good upgrade?
I wonder if I need to change the spring in order to match my weight? I am max ~ 11 stone / 70kg (without gear) , spring number on the shock I am buying is: 21040-26/85 L4510. The shock has been serviced apparently and I am paying 300GBP for the shock, which is ok I guess. I am quite new to this and sorry for my English btw..
Here are some pics:




Offline Tomspurs

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Re: Öhlins upgrade on ST08, need help
« Reply #1 on: April 14, 2019, 11:45:43 PM »
Mine was re sprung and re valved for road use on my 09 Street  :028:
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Offline biker den

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Re: Öhlins upgrade on ST08, need help
« Reply #2 on: April 14, 2019, 11:57:06 PM »
Did you buy the same shock for your street? I will go to Ohlins service shop with this shock and get it fitted there I think and ask them to re-spring and re-valve as well i guess. Was it expensive to do that, and I guess it is totalt worth it?

Online JonyB

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Re: Öhlins upgrade on ST08, need help
« Reply #3 on: April 15, 2019, 04:32:41 AM »
Depending on your riding, as in where you'll ride (road / city / track) and how fast or slow you'll be riding, chances are that the spring that's fitted will be good to go. Same goes for the current valving. (Just trying to save you some money).


Are you keeping the same forks? Are they the original forks? When were they last serviced? What's your current SAG?


After you fit the new shock, you'll need to check you SAG and see if the bike will be "balanced" (front to rear), and start with that before you go and throw a lot of cash onto the bike. Sure, if you'll go to the shop, they'll sell you everything and anything, but do you really need that? Again, it will depend on your intended use of the bike.


The main thing here (IMHO) is to ensure that the bike will be balanced (front to rear) and considering that you're getting a fine piece of kit for the shock, you have to make sure that the front will be working to the same "level" if you understand what I'm saying. Getting an excellent shock, and valving and springing for your weight and ability, will be almost useless unless you do something similar to the forks...


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Offline Tomspurs

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Re: Öhlins upgrade on ST08, need help
« Reply #4 on: April 15, 2019, 06:21:17 AM »
*Originally Posted by JonyB [+]
Getting an excellent shock, and valving and springing for your weight and ability, will be almost useless unless you do something similar to the forks...

Not sure I agree with the above....I only did the rear shock on my 09 Street Triple and it improved the bike vastly. You don't need to do the front if you feel its OK. Just get the Ohlins sprung to your weight (only if the current spring is wrong...might be too stiff as it is from the Daytona) and re-valved if the dealer thinks it will be worth re valving (didn't cost me much) Then ride the bike and see what you think  :028:
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Offline biker den

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Re: Öhlins upgrade on ST08, need help
« Reply #5 on: April 15, 2019, 09:16:04 AM »
I actually ordered "Matris Fork Cartridge F20 Kit" (https://www.racingonelab.com/prodotto.php?id=12795) so I will be upgrading front forks as well. I was looking at Ohlins 675R forks upgrade but it is too expensive, hope Matris will do the job.

I don't go on track yet and if I do, I will probably ride Ducati 848. So only road/city riding with the ST for the moment, but still I want to customise it to my weight and riding as much as possible.


Offline JanM

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Re: Öhlins upgrade on ST08, need help
« Reply #6 on: April 15, 2019, 11:20:29 AM »
Which Ohlins productnumber is stamped on the shock (TRxxxx)?. It has an 85N/mm spring, which is to the soft side and the shock has lengthadjustment, which is good but not standard OEM. So it could also be revalved and I would suggest to have it serviced/checked by an official Öhlins servicecentre to find out exactly what you have.

One difference between Daytona and ST is that the ST uses a shock that is a bit shorter, and if the Daytona shock has also been made longer with the lengthadjuster parts, it might be a bit too long for the ST.

I have been using the stock Daytona 675R (TR908) shock and modified it, it is a direct fit, depending on your exhaust system - if you use a lowboy there are no problems and if you use an underseat type, you just need to check for clearance - the type you have posted pictures of is the right type for the ST 08.

Together with the Matris F20K you have good components to work with.

Offline biker den

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Re: Öhlins upgrade on ST08, need help
« Reply #7 on: April 15, 2019, 11:54:56 AM »
I am not sure which product number it is yet, I will ask the seller right away and come back with that information. But, I think it is stock Daytona R shock...
The spring might be right then , because I am "light", but I will need to double check with Ohlins shop in Norway I guess. Seller says that it has just been serviced (0miles after service), so I might not need to service it. But anyways I will take it to the shop and let them take a look.
I use hp-corse exhaust (low-boy), I hope it is direct fit without any major modifications.

Thanks a lot for the help!

Offline JanM

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Re: Öhlins upgrade on ST08, need help
« Reply #8 on: April 15, 2019, 12:18:27 PM »
If it just serviced, you should be able to find out which setting the shock has for compression and rebound damping. As said, compared to stock OEM TTX shocks you have a modified shock with at least a lighter spring and lengthadjustment added - so you need to find out what else has been done to the shock, including damping changes and shock length.

You can just see the reservoir on the TR908 peeking out here, couldn't find a better picture:

https://www.street-triple.co.uk/index.php/topic,19634.msg256001.html#msg256001

Offline biker den

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Re: Öhlins upgrade on ST08, need help
« Reply #9 on: April 16, 2019, 01:27:03 PM »


It is TR 9080, will this still fit on my ST08?
I have also asked if there is anothing else has been done to the shock. Waiting for reply... But can I go ahead and buy it?
« Last Edit: April 16, 2019, 01:34:13 PM by biker den »

 


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