Forums 🚦 HYOSUNG CULTURE 😃 General Chat any help/ tips?
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DoF-Ruby.
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Oct 7, 2025 at 9:58 AM #20957Bike Model = : gt125r 2007
hello
i recently got a gr125r from 2007. and i was wondering if anyone has some tips or advice before i really start riding it?
im sorry if this is posted in the wrong place.
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Oct 8, 2025 at 6:31 PM #20963
Nice purchase and welcome:
We could start with the basics:
– Tyres = Michelin or Bridgestones are best (if you could depend your life on the road, go for michelins) but obviously be very very careful in icy conditions as even cars can slide too.
– Oil Change (doesn’t matter what the last owner did) , do a fresh oil change and filter, she will thank you.
Tutorial here:[Tutorial] How to Change Oil & Filter on Hyosung GV + GT125/250 +R
– Check Battery and Regulator is charging well, a bad charging system could leave you stranded in the cold, here is a topic on how to test your electrics:
Rectifier – How to Test Stator , Battery , Regulator – GT125R Carby
Find every bolt on the bike that’s holding the fairings and replace them with stainless steel. Aluminium is no good. This makes maintenance easy next time.
Cold & Dirty season is here soon, so get ACF50 = Remove “every single connector” on the bike, and add a single “tear drop” of ACF50 in every connector on the bike, it will thank you a lot. Do not USE WD40 as it will go in flames . Just strictly ACF50
Remove your wheels and grease the axles and check bearings are good.
If you remove your Steering Yokes = Grease their bearings.
If you remove your calipers , give them a good soak of brake cleaner and a small toothbrush to clean inside the pistons. then use COPPER Grease behind the pads and copper grease on the “sliding pins for pads” . Brakes are just too important.
If possible, if you see black hoses for brakes , change them to new ones and bleed brakes again (Hyosung service manual says that any brake lines older than 4yrs need replacing)
if you see “GREY” fuel pipes under the tank , replace them all and go to your local auto shop for a fuel filter and maybe 4 meters of fuel pipe so you can also do your vacuum lines, extra pipes can be use for the tank’s overflow if its not there etc.
Tutorials here:
How to change Vacuum Lines on Hyosung GT125R GT250R & GT Comet (Air Hose Diagram)
How to upgrade Fuel Lines & Filter on Hyosung GT125R GT250R (Carb Hose Diagram)
Hope this helps , let me know if I missed something you wanted to hear?
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Oct 9, 2025 at 10:13 AM #20966
thank you very much for the tips. i think you coverd everything i wanted to know i was already planning on bringing it by a shop so change oil and tires and to check the chain. ill probably ask them to check the brakes and all the lines like you said
once again thank you very much !!!!
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