Honda CBR600F4i, 599 and 919 Key Replacement

Quick answerThe CBR600F4i and its naked relatives, the 599 and the 919, were sold in the United States with a plain cut key. Honda's US manuals from 2004 through 2007 show no immobilizer on any of the three. A lost key means cutting a new one to the bike's locks, with no electronics involved.

Honda CBR600F4i, 599 and 919 key quick facts

US owner's manuals for the CBR600F4i (2004 and 2005), 599 (2004 and 2006) and 919 (2004 through 2007) have no HISS or immobilizer section.
All three use one key for the ignition and steering lock, the fuel fill cap and the seat lock.
The 2004 F4i and 2004 599 manuals show a key number plate supplied with the keys.
On the 599 and 919 the helmet holder is used with a wire kept in the tool kit under the seat.
Each has a storage space in the rear fender under the seat sized for a U-shaped lock.

Honda CBR600F4i, 599 and 919 key types by year

Years	Models	Key type	Chip	Notes
2004-2005	CBR600F4i	mechanical cut key	no	Key number plate with the keys. The seat lock gives access to the helmet holder and tool kit. Steering locks with the bars either way.
2004, 2006	599 (CB600F)	mechanical cut key	no	Seat on a key lock; helmet holder wire stored in the tool kit; fuel fill cap takes the ignition key.
2004-2007	919 (CB900F)	mechanical cut key	no	Steering locks with the bars turned left. Seat lock, fuel fill cap and ignition on one key.
Varies	CBR600F and CB600F (Hornet 600) sold outside the US	transponder key (HISS)	varies	Honda's worldwide list of HISS models includes the CBR600F and the CB600F, the bike sold here as the 599. Equipment differs by market and year, so a HISS light on the dash of an import means a chip key.

A sport bike and two naked bikes with the same key setup

The CBR600F4i was Honda's fuel-injected 600 sport bike of the early 2000s. The 599 and the 919 are upright naked bikes built around four-cylinder engines from the same sport bike line, and Honda's manuals give their model codes as CB600F and CB900F. Elsewhere the two naked bikes were called Hornet 600 and Hornet 900.

For key purposes all three are from the same playbook: an ignition key, a key number, and nothing electronic between the key and the starter. The US manuals do not list an immobilizer indicator, and the lost-key page in each talks only about having a duplicate made from the key number.

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One key, three locks

There is no separate helmet lock or luggage lock on any of these, so the count stays at three.

Ignition switch: push the key in and turn to LOCK to secure the steering; the F4i locks with the bars turned fully left or right, the 599 and 919 with the bars fully left
Fuel fill cap: the key goes straight into the cap and turns clockwise
Seat lock: turn the key clockwise; on the F4i the seat pulls back and up, on the 599 and 919 you lift the rear first
Under the seat: tool kit, helmet holder and the U-lock space in the rear fender

What goes wrong on these now

The youngest of these bikes is approaching twenty years old, and a bike that age may have been through several owners. If the ignition switch has been forced at some point, the signs are a chewed key slot or a key that turns with no detents. A switch in that state should be repaired or replaced, not lived with.

Mismatched locks are the other thing to look for on a used example. A bike rebuilt from parts may have an ignition from one machine and a fuel cap or seat lock from another, leaving the owner with two or three keys. The locks can be rekeyed to a single key again.

Getting a key when you have none

We ask for photo ID and the registration or title before any key is made. From there the work is done at the bike: a key is cut to suit the ignition, then checked at the cap and the seat. If the seat lock or cap turns out to be from a different bike, you decide whether to rekey it on the spot or leave it. Nothing needs to be towed, and nothing needs to be programmed.

Where to find the key code

The 2004 F4i and 599 manuals show a small key number plate handed over with the keys, and every manual in this group has a line in the Quick Reference section for the number. Honda adds that the selling dealer may have it on file. Failing all of that, the number can be recovered 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)

Honda CBR600F4i, 599 and 919 key FAQ

Did the US CBR600F4i come with a chip key?

No. Honda's 2004 and 2005 US manuals describe a plain key and a key number plate, with no immobilizer system.

Are the 599 and 919 keys the same as Hornet keys?

They are the same motorcycles under different names, but market equipment differed. A US 599 or 919 uses a plain key. Honda lists the CB600F among its HISS models in other markets, so a Hornet brought in from abroad may have a chip key; check the dash for a HISS light.

My bike has one key for the ignition and another for the gas cap. Can that be fixed?

Yes. That usually means a lock was replaced at some point. The odd lock can be rekeyed to match the ignition so you carry one key.

The ignition on my F4i was damaged in a theft attempt. Do I need a whole new lock set?

Not always. Sometimes the switch can be repaired and kept on the original key. If it has to be replaced, the new switch can be keyed to match your fuel cap and seat.

The immobilizer system on this bike

Honda HISS Immobilizer: Keys, Lost Keys and the Warning LightHISS, the Honda Ignition Security System, is Honda's chip-key immobilizer: the engine only starts when the bike recognizes a coded chip in the key.

More Honda models

Services for this bike

Recovered Stolen Motorcycle: Ignition and Lock DamageA recovered stolen motorcycle usually comes back with a damaged ignition switch and steering lock, and often with cut wiring and forced seat or fuel cap locks.
One Key for All Your Motorcycle Locks: Keying AlikeA motorcycle that needs different keys for the ignition, fuel cap and seat has almost always had a lock replaced.
Signs Your Motorcycle Ignition Switch Is FailingA motorcycle ignition switch is two parts in one housing: a lock cylinder that reads the key and an electrical switch that powers the bike.
Worn or Bent Motorcycle Key: Signs, Risks and the Right FixA worn motorcycle key shows up as a key that needs wiggling, works in one lock but not another, or works worse than the spare.

Where we come to you

Sources

Page last updated November 14, 2026.