Clutch plates – GV125 S Bobber EFi Hyosung
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Bike Model = : 2023 gv125s Aquila
I’ve been having some issues with (what i think is) my clutch
When i pull the clutch in to start the bike and then release it (all whilst being in neutral) there is a distinct grinding noise which i think is coming from the clutch.
After a bit of research, I found that this may be because a new thrust bearing is required so for the £10 it cost me I’ve ordered one.
When i went to fit it, I took the clutch friction and steel plates out just to check them i noticed black dots on the friction plates and the steel plates appeared blue / brown. The inside of the pressure plate and the push rod is also covered in what appears to be black grease. I suspect this is all the result of the components overheating. The oil that I drained came out a dark black as well. Ive attached some photos .
My questions are;
do I need to replace the friction and steel plates? Bike has done around 5000miles and is a 2023 GV125s aquila bobber.
should the pod rod and the inside of the pressure plate be greased in anyway?
Very new to riding (only 6 months!) so apologies if any of this seems obvious in any way!
thanks!
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Grab some vernier calipers and measure the cork plates thickness , do you think they could have been worn down ? Factory plates tend to wear down a bit sooner than OEM
Usually a full clutch EBC kit solves the issue as you get new plates and new metal discs , least this way, you put your faith in a UK brand like EBC to do well for a bit longer.
It does get hole, so its not alarming to see plates and metal discs go dark , but if its all black then yes i would be very worried and the oil being ultra black needed a change!
So time for a new set of clutch springs, plates and the lot?
Also consider MOTUL 7100 oil (it really is a good oil for hot twins) , i trust it more than any other brand for all my various bikes. keep an eye on your engine temps too, if the coolant is 2yrs old or cheap one used by dealer , get yourself MOTUL FACTORY LINE coolant. Best coolant i trust too. Castrol junk products don’t hold a candle to Motul.
Replace the oil filter again, so that old bits dont circulate back in to the bike spoiling up the new oil.
At 5,000 miles , Hyosung says “Inspect or change” clutch at 4,000 miles, so you were right to have a look.
While it is apart, have a good look at the clutch basket and gently shake it to see if you feel any wobble ? and also spin the INSIDE basket to feel for any “grinding” , it should be smooth.
Hope this helps!
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