Reply To: Are gt125r reliable
Hello,
Yes it is reliable ; due to misinformation and a lot of facebook wannabes out there, don’t be discouraged;
- Engine is made in Korea and is based from Suzuki Intruder and Hyosung has a long history with suzuki from the past.
- Carbs are made by Mikuni Japan
- Frame size is chunky and is based off Suzuki GS500 (no GS500 engines dont fit straight on, Korea made their frames to fit their own engines by force)
However, here is what you should do to have a long life with it.
- Use Michelin Tyres (Pilot Road) , as they are most recommended! and stick to factory size. The factory tyre is 150 section where most little 125s have 130 section mostly.
- Get rid of Regulator and pimp it (Hyosung did not make it, but other korean companies supplied some electronics to Hyosung) #3 failing electric item
- Use Koyo wheel bearings all over even the sprocket drum, you almost don’t have to worry about them for next 30k miles even.
- Use only e5 fuel or it punishes hard.
- Use sintered brake pads or carbon ceramics – Ignore cheap chinese organic pads.
- Waterproof the harness all over so that harsh british winters and their salty roads don’t rust things off.
- Do NOT use aluminium bolts or fancy colours. However, as soon as you get it. Get stainless bolts all over the bike except wheel axles and other big critical places.
- Get USD fork protectors so that stone chips dont hit them and you prolong their life before they leak.
Sometimes it helps to use Motul ONLY factory line fork oil that is 10w , as Korea used 5w which is too soft for our bumpy roads - If the rear shock looks bent, replace it. (affects mostly 2012-2019 bikes) (HOWEVER, Kayaba Forks & Shocks used on Hyosung are also used on the SV) They are good shocks and forks for the Hyosung when they perform well 🙂
- Change oil every 1500 miles max (if you need to be ocd with the bike, the oil is crucial)
- Use ESTER grade oil and it will thank you (Motul Ester or Silkolene Ester) only. Castrol is junk , no matter what the sales man says
- This engine has a lot of bearings and moving parts, the koreans over-engineered it lol.
- Speaking of engine, it has 8 valves (most 125 have 2 or 4 valves max) , so keeping on top of clearances is crucial
everything else is just upgrades and pimping, that is a discussion between you and your wallet 🙂
As long as the basics above are covered, you will be already , otherwise when you get it , report to this forum for whatever bothers you and we may advise.
Go get her and ride safe!
// Meditation doesn't mean you have to sit still....
