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Hyosung GV250, GV650 and ST7 Key Replacement

Hyosung's cruisers, the GV250 and GV650 Aquila and the ST7, use plain cut keys.

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  • Motorcycles and scooters only
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  • Keys cut and programmed on site
  • Proof of ownership required
Quick answerHyosung's cruisers, the GV250 and GV650 Aquila and the ST7, use plain cut keys. The GV250 manual describes a pair of identical keys stamped with a number for ordering replacements, and Hyosung's service manuals for the GV650 and ST7 cover an ordinary ignition system with no immobilizer. A lost key is made to the bike's locks.

Hyosung GV250, GV650 and ST7 key quick facts

  • The GV250 owner's manual says the motorcycle is equipped with a pair of identical ignition keys, and that the number on them is used when making replacement keys.
  • The GV250 ignition switch has OFF, ON and LOCK, with all circuits disconnected at LOCK.
  • To lock the GV250's steering: bars fully left, push the key down at OFF, let it come up and turn to LOCK.
  • On the GV250 the ignition key also opens the seat lock and the fuel tank cap.
  • The GV650 and ST7 service manuals have no immobilizer or transponder section, and the ST7's lists a helmet holder among its exterior parts.

Hyosung GV250, GV650 and ST7 key types by year

YearsModelsKey typeChipNotes
Fuel-injected yearsGV250 Aquilamechanical cut key with a stamped key numbernoPair of identical keys. Manual provides a box to record the key number.
From around 2005GV650 Aquilamechanical cut keynoHyosung's service manual describes a conventional ignition system and a side stand ignition interlock, with no immobilizer.
From 2010ST7mechanical cut keynoThe ST7 service manual covers the fuel injection control unit and ignition switch with no immobilizer section. A helmet holder is fitted.

Cruiser styling, straightforward ignition

The Aquila name covers Hyosung's V-twin cruisers. The GV250 is the small one, popular with new and shorter riders. The GV650 is the sport-cruiser with the engine from the GT650. The ST7 came later with a bigger motor, belt drive and a more traditional look. Different as they are to ride, their ignition systems are equally plain.

For the GV250, the owner's manual spells it out: a pair of identical keys, a three-position switch, a steering lock. For the GV650 and ST7, the evidence is in the service manuals. They walk through the electrical system and the fuel injection diagnostics, including a routine that reads fault codes by cycling the ignition switch, and nowhere describe a key transponder, an immobilizer unit or a security indicator.

Need a key for your GV250 Aquila?

Call or text with the year and where the bike is parked.

Call (805) 429-8452Text your year, make and model

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Keys and locks on the GV250

  • Ignition: OFF with the key removable, ON with the key captive, and LOCK
  • Steering lock: handlebar all the way left, key pushed down at OFF, allowed to rise, then turned to LOCK and removed
  • Seat lock: opened with the ignition key
  • Fuel tank cap: opened with the ignition key
  • Key number: stamped on the keys, with a box in the manual to copy it into

When the engine will not crank

Before deciding the key or switch has failed on one of these cruisers, rule out the interlock. Hyosung's manuals describe a side stand ignition interlock system: with the stand down, the engine will only start in neutral or with the clutch lever pulled. A bike that is dead in gear on its stand and lively in neutral has a working key.

Real key and switch faults on these bikes look different: a key that turns to ON with no dash lights at all, a key that has to be held at an angle, or a switch that cuts out when the bars are turned.

Lost key service

We confirm ownership with photo ID and the registration or title, cut a key to the motorcycle and test it in every lock the key should work, including the helmet holder on an ST7. If you have the GV250's key number written in your manual, have it ready. It is a useful cross-check, though the key can be made without it.

A spare key is cheap insurance on any of these three. Have one cut while you still have a working key to copy.

Where to find the key code

Hyosung stamps an identifying number on the ignition keys. The GV250 manual says this number is used when making replacement keys and gives a box headed key number to write it in. Check that page, then any surviving original key. If there is no record, the key is made from the lock.

What to have ready

Have this ready when you call or text

  • Year, make and model of the bike
  • Where the bike is parked
  • Whether you have any working key, a broken key or a key code
  • Photo ID and registration or title (we verify ownership before making a key)

Hyosung GV250, GV650 and ST7 key FAQ

Does the Hyosung GV650 Aquila have an immobilizer?

No. Hyosung's service manual for it describes an ordinary ignition system with no immobilizer or transponder section.

Where is the key number on a GV250?

Stamped on the original ignition keys. The owner's manual also has a box where the first owner was asked to write it.

Does one key work the seat and fuel cap on a GV250?

Yes. The ignition key also opens the seat lock and the fuel tank cap.

My ST7 won't start but the key turns. Is it the key?

Check the side stand and gear position first. Hyosung's side stand interlock only lets the engine start with the stand down if the bike is in neutral or the clutch is pulled. If the dash stays completely dark at ON, then the switch or battery needs a look.

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