Genuine G400C Key Replacement

Quick answerThe Genuine G400C is a classic-style 400cc single with classic-style locks. It comes with two plain keys, and either one works the ignition switch, the fuel tank cap and the steering lock. There is no immobilizer, so a lost key is cut to the bike and that is the end of it.

Genuine G400C key quick facts

The G400C owner's manual says two keys are supplied and that either key operates the ignition switch, fuel tank and steering lock.
The ignition switch has three functions in the manual's table: run, stop with all circuits off, and lock the handlebar.
The fuel cap sits under a lock cover. You open the cover and use the key to turn the cap.
The manual warns against sharp metal key rings because they scratch the upper triple clamp around the switch.
Genuine advises removing one key from the ring and saving it as a spare.

Genuine G400C key types by year

Years	Models	Key type	Chip	Notes
2019-present	G400C	mechanical cut key, two supplied	no	One key for the ignition, fuel tank cap and steering lock. No immobilizer or key code is described in the owner's manual.

A motorcycle from a scooter company

Genuine is best known for the Buddy, but the G400C is a proper motorcycle: an air-cooled, fuel-injected single with a five-speed gearbox, spoked wheels and a chain. Its key arrangement belongs to that world too. You will not find a seat release in the ignition or a shutter over the keyhole. You get a switch at the top of the forks, a locking cap on the tank and a handlebar lock.

The manual sums it up in one sentence: two keys are supplied, and either operates the ignition switch, the fuel tank and the steering lock.

Need a key for your G400C?

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

Call (619) 775-1858 Text your year, make and model

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Ignition and handlebar lock

The manual's table gives the switch three jobs. One position turns on the main circuits for starting and riding. One stops the bike and switches everything off. The third locks the handlebar. A caution adds that before removing the key you should make sure the handlebar is locked, and that moving the key out of the run position while riding shuts down all electrical systems.

There is also a note you rarely see in a manual: do not hang sharp metal keys or key fobs from the ignition key, because they scratch the upper triple clamp. A cloth or leather fob is recommended. It is a small thing, but it tells you where the switch sits and why a heavy bunch of keys is a bad idea there. Weight swinging on the key also wears the switch.

The fuel cap

To refuel, the manual says to open the fuel tank lock cover and use the key to turn the fuel cap. After filling, the cap goes back on and the key comes out. Tank caps live in the sun and rain and get splashed with fuel, so on any bike of this type the cap is usually the first lock to turn gritty. If the key begins to drag there, have the lock cleaned and serviced before it traps a bent key.

Lost G400C keys

With both keys gone, we confirm ownership with photo ID and the registration or title, make a key to the bike where it is parked, and test it in all three places it should work: the ignition, the handlebar lock position and the tank cap. No electronic step follows.

Good habits for this bike are simple:

Split the two keys on the day you buy the bike and keep one at home
Use the handlebar lock, which is the only factory theft deterrent, and add a disc lock for street parking
Keep the ignition key on a light ring
If the bike has been dropped with the key in, check that the key is still straight before it snaps in the switch

Where to find the key code

The G400C manual does not describe a key code tag or a place to record a key number, and Genuine says it does not cut keys by VIN. If both keys are lost, a new key is made from the locks on the motorcycle.

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)

Genuine G400C key FAQ

Does the Genuine G400C have an immobilizer?

No. The owner's manual describes two plain keys and a mechanical ignition switch with a handlebar lock.

Does the same key open the gas cap?

Yes. The manual says either key operates the ignition switch, the fuel tank and the steering lock.

How many keys should come with a used G400C?

Two were supplied new. If a seller has only one, plan on having a spare cut straight away.

Can a dealer order a key for my G400C by VIN?

Genuine says it does not cut keys by VIN. A locksmith cuts the key from the bike's own lock.

More Genuine Scooters models

Services for this bike

Lost Your Only Motorcycle Key? What to Do NextIf you lost the only key to your motorcycle, a new one can almost always be made, but the route depends on whether your bike uses a plain metal key, a chipped transponder key, or a keyless fob.
Motorcycle Key and Lock Care: What Makers RecommendKeep water and grit out of the locks, use a small amount of a dry or lock-specific lubricant instead of oil, and replace a worn key before it fails.
How Many Keys Should Come With a Used Motorcycle?Most motorcycles are delivered with two keys or fobs, and many also come with a third item that matters more than either: a master or programming key, a code card, a key number tag or a security PIN.
Corroded Motorcycle Locks From Salt Air: Signs and CareSalt air corrodes the small parts inside ignition, seat and fuel cap locks, and the first signs are a gritty key, a lock that needs a second try, or a little-used lock that stops working.

Where we come to you

Sources

Page last updated November 14, 2026.