Skip to content
View in the app

A better way to browse. Learn more.

Trials Central

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Who has tried a soft clutch support ring?

Featured Replies

2 hours ago, F5Dave said:

Yes but they have done the research on what works.  Its not a TRS kit from what it says.  I've emailed them to see if they have the other two parts, spring and friction.  

The kit is made by S3 parts in Spain it has 1x clutch steel plate 1.6 mm thick  , 1x diaphragm spring and a adjustable spring support ring (duro) which means hard in english .   www.trialworld.es has them listed at 99 Euros as a TRRS CLUTCH IMPROVEMENT AND SMOOTHING KIT. S3 is a company that for decades has made all the motor cylinders for nearly every Trials bike made in recent history. Try e-mailing S3 parts and see what they say.

Edited by Tr1AL

https://int.nonstopbikes.com/blog/trrs-clutch-upgrade-kit-2018-current-5c/   As it is a S3 kit then a trials shop some where in the world probably has 1 in stock .as of yet unsold but if you do not search you will not find it's that simple.

I will have a guess that the reason they do not have the video on the site is probably because people could then work out that they could make up a kit themselves from individual parts and do it cheaper using Casales' tips on how to fit the bits to achieve a soft clutch.

Edited by Tr1AL

  • Author

I got a quick reply from Hellteam and he explained that thier issue was getting bits out of GasGas ktm. 

I don't mind paying a bit of r&d if it saves me buying parts then getting slip, more parts more freight more spoiled rides. .

Hey thanks so much for that info. I'll go searching,  maybe AI can find areas of Web I don't for S3 kit. 

Funny I bought some different plates for my TXT250 when I was buying mc seal kit but never used them. All went with bike but bet 1.6mm plate was there knowing my luck. 

The GG clutch was just what I'm looking for in action.  

@ F5Dave   Here are the measurements used by TRS to make the clutches suit three types of rider:

                                             Clutch pack thickness. Held in hand                         Spring thickness                  Adjustable clutch ring support         

           EXPERT                        9.85mm                                                                      1.5-1.7mm                             DURO/HARD

            INTER                           9.85mm                                                                       1.5mm                                   MEDIO/MEDIUM

            NOVICE                        10.00mm                                                                 unknown                                    DURO/HARD

               The unknown spring is probably going to be around 1.2mm thick .  If a GasGas Pro spring will fit then get a second hand clutch out of a 2007 on GasGas Pro and use that spring and see how that works along with a hard clutch support ring and a 1.6mm clutch steel plate or whatever you need to do to get the clutch pack thickness to 10.00mm.

           

            

                             

Edited by Tr1AL

@F5Dave  The parts in the TRIALWORLD.ES WEB SHOP SITE show that the spring for their soft clutch set up kit is PART #  05011MT100. This spring is the same one used as standard fitment in the 2018 125/250/280/300cc bikes if this is the case then making the Clutch pack 10.00mm thick and adding the "Hard" adjustable clutch  support ring is all that is needed to improve the clutch. Check it for your self in the relative info I put on from Trialworld.es and Non-Stop.

All the parts you need are all available as supplied from the TRS parts catalogue. 

Edited by Tr1AL

  • Author

Thanks so much for posting.

Looking at the parts diagram for my 2023 One RR it already has PART #  05011MT100. So I think I'm back to try find a GG 1.2mm spring, that seems to be the hard part to track. I've been onto the local guy here for old stock but he can't help. My CGPT searches have not dug anything up. I've tried ebay but will now extend to try find a 2nd hand clutch. Why do you say 2007? From that year only, or likely several do you think. I'll try scope parts diagrams. My 2014 TX  had a MT280632015. Hmm, searching says it is a 1.5mm, grr.  

Edited by F5Dave

  • Author

From Hell site

 

Clutch Belleville Spring 2015+ 1.2mm

This is the lightest of all the Belville springs used on the GasGas TXT diaphragm clutches.

Early ones were 1.7mm, (2002 - 2005) then they reduced the thickness to 1.5mm (2006 - 2015), and post 2015 were down to 1.2mm (except GG CONTACT)

@F5Dave Hello , Looks like you are getting somewhere with this now , The reason I suggested the 2007 onwards is because it will be the most likely available as a scrapped bike that will have a 1.5mm thick Belville spring , bearing in mind that this if original has been under pressure for a long time  also it will have been used quite a bit and so will be weakened ,  therefore more like a 1.2mm thick spring . 

Finding earlier GasGas Pro bikes scrapped is quite easy but the later model PROS' are not being scrapped yet in numbers that make parts cheap. It just widens your search and makes it cheaper by starting with a 2007.

If you can find a breaker with a post 2015 that's within budget  then you will have what you perhaps require , But bear in mind the TRIALWORLD.ES kit supplies the spring that you already have in your bike as part of their version of the soft clutch kit. . Good luck with your search . I hope it works out and you get the clutch effect you want. Best wishes Alan.

  • Author

Cheers

After mucho time searching. . . 

OK so I've ordered what I believe is the 1.2mm spring with PN MT22020GG-CGI-1  from KTM World in the US.

They weren't 'allowed' to ship internationally but I'm using NZ post shipping service.  So far i'm in $25 US to get it delivered inter US. - about $50 NZ. Then the same to get it to NZ.  Unless they pack it in a helmet box the way the US shops seem to so it doesn't get lost by US Post.  By which time it will cost the same as the GDP of Equatorial Ghana.  I'll wait till it actually gets here (about when the Sun runs out)  and measures 1.2mm before I buy the other parts.

In the meantime I'll count to three as I let the clutch out, and by the time I get a kit together I wont need it  :) 

 

 

 

Edited by F5Dave

@F5Dave  "They weren't allowed " what is that so outsiders cannot notice that the rising price of fuel is affecting the cost of shipping adversely. Strange days.  Have fun. Regards Alan

  • Author

No I actually believe it is a ktm directive.  It used to be US companies just refused to believe that there was an outside world and wouldn't ship.

Problem solved itself.  They came back and said no stock. 

Sigh.

  • 3 months later...
  • Author

Since shutdown, Hell restocked. Fitted. Did a few trials.

Feels like my GG clutch used to.

Couldn't be happier about that.

Money well spent.

Edited by F5Dave

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.