Question about 2005 Hyosung GT 125

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Max speed How fast can a Hyosung GT 125R go comfortably without thraping the engine?

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I have a hyosung comet gt125 ive now change my jets do i need to do anything else to it

Posted on Jun 04, 2011

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About 65mph but i'm heavy and 6ft 1

Posted on Jan 29, 2010

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I drive my hyosung at around 70-75mph (gt125r) and ive got around 3500 miles on the clock and havent had any real major problems with my bike

Posted on Mar 05, 2009

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With right chain adjustments & oil and tyre pressure etc. you should go easy between 65 to 70 miles per hour but I have had mine upto 84 down hill.

Posted on Sep 28, 2011

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About 65mph

Posted on Nov 10, 2008

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My speedo reading on my hyosung gt250R '11 fluctuates between 0 - 300 km/h whilst i'm riding and is clocking kilometers on the odometer much fast than it should. I've noticed whilst travelling at a decent...

Sounds to me as if you've bleed over between tach and speedo.Maybe a wire cross and touching between the two.Possibly a Faulty pickup on the speedo too.

Oct 01, 2013 | Hyosung Motorcycles

1 Answer

What type of speed restrictor does a 2009 hyosung gtr 650 comet have in it ?

the restrictor is managed by the ECU unit as its a chip, if you take it to any main dealer they will be able to restrict or de-restrict for you.

May 28, 2012 | 2009 Hyosung GT 650

2 Answers

I have a hyosung 2008 gt 250 r fi model. when i start the engine,idle jumps to 5000-6000 rpm . i checked the isc selenoid and while the ignition switch off the selenoid long,while ignition switch on the...

This doesn't sound like an electrical problem. It sounds more like an air leak between the carburetor and the cylinder. Air that has not gone through the carburetor makes the fuel/air mixture lean. This causes the engine to run super fast and hotter as well. Check all rubber fittings and seals between the carb and the cylinder. Be sure the clamps are tight and all mounting bolts are tight.

May 11, 2011 | 2008 Hyosung GT250R

1 Answer

Hi ive had my Hyosung GT650R 2010 for a year now but lately wen i sit in traffic the temp goes to the max and the fuel goes to low even though its full and the wen there's no traffic the levels go back to...

I expect the actual engine temperature is correct, the battery is going flat.
Check the charging system. There should be 13.8 volts on the battery with the engine running, possibly up to 14.5 volts.

Mar 27, 2011 | 2005 Hyosung GT 650 R

1 Answer

What stroke engine is my hyosung gt 125

its a four stroke engine. similar to a car

Apr 04, 2010 | 2005 Hyosung GT 125

1 Answer

Honda xl 125 specs

Make Model
Honda XL 125R Paris Dakar Year
1983 Engine
Air cooled, four stroke, single cylinder, OHC, 2 valves per cylinder Capacity
124 Bore x Stroke 56.5 x 49.5 mm Compression Ratio 9.4:1 Induction
PD52 Ignition / Starting
CDI / kick Max Power
12 hp 8.7 kW @ 9000 rpm Max Torque
10 Nm @ 8000 rpm Transmission / Drive
6 Speed / chain Front Suspension
Telescopic forks Rear Suspension
Swinging arm Front Brakes
Drum Rear Brakes
Drum Front Tyre
2.75-21 Rear Tyre
4.10-18 Seat Height 840 mm Dry-Weight
109 kg Fuel Capacity
17 Litres

Feb 10, 2010 | 1983 Honda XL 125 R

2 Answers

Battery died...How to charge

for motorcycles, 2 amp 12 volts max is recomended, usally the slow charge of a car charger

Jul 11, 2009 | 2005 Hyosung GT 250

1 Answer


Just about anything is possible but this would be difficult. I think the body/chassis is different. You also have a different transmission between the two bikes; 6 speed on the 650R and 5 speed on the 250R. The 650R is a liquid cooled engine while the 250R is air/oil cooled. They both use different carbs.,

Nov 10, 2008 | 2004 Hyosung GT 250

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