
A motorcycle without its key is not usually a lost cause - it is a decoding job. If you still have one key, duplicate it today. If you have none, a new key is produced either from the manufacturer's key code against proof of ownership, or by reading the wafers inside one of the bike's own locks. Bikes with an immobilizer need the chip paired afterwards, which is where the job can stop being purely mechanical.
The hardware is smaller, simpler and older in design than almost anything on a modern car. That cuts both ways: easier to decode, far easier to wear out.
One caveat worth knowing before you call: if the bike has had an ignition switch, seat lock or luggage set replaced at some point, it is no longer keyed alike, and decoding the easy lock produces a key that opens the seat and nothing else. Older bikes that have been through several owners are where this turns up.

If your bike has an immobilizer, the cut is only half the job. The key carries a transponder chip the bike's system has to recognize, and until it does, the engine will either refuse to start or fire and immediately stall. A dash warning light that blinks differently with a strange key is the usual tell.
Whether a chipped bike key can be originated outside a dealership depends entirely on the make, model and year. Some systems can be programmed with aftermarket equipment; others realistically need the manufacturer's own tooling, particularly where all keys are lost rather than one of two. This is why the first question anyone should ask you is the year, make and model - the answer genuinely changes what is possible. The underlying technology is explained in how transponder keys work and when a locksmith can cut one.
A note for proximity-fob bikes: a fob that has stopped working is not necessarily lost or broken. A flat coin cell is the most common cause, and these systems normally have a documented procedure in the owner's manual for starting with a dead fob. Check that first. And if you have two fobs and lose one, replace it then - going from two to one is a scheduling problem; going from one to none is a recovery job.
A large share of two-wheel key work in New York City is not motorcycles at all - it is scooters and mopeds, many of them working delivery shifts every day of the week. They bring their own quirks.
Year, make, model, and whether it has an immobilizer - that is enough for us to tell you honestly what can be done on the street and what needs the dealer. Licensed and insured, all five boroughs, 24/7.
New York City licenses locksmiths, and the number should appear on the vehicle, the invoice and the website. Verifying a locksmith's license in NYC takes a minute and is the best filter against bait-and-switch operators who advertise one price and arrive with another.
A lost key is an access problem: you need a new key and nothing else has changed. A stolen key is a security problem, because someone now has a working key and may well know where the bike sleeps. Copying your way back to normal does not address that.
If keys were stolen, treat it the way you would treat stolen house keys - the reasoning carries over directly from what to do about lost or stolen apartment keys. Move the bike if you can, change the locks rather than duplicating to them, and in the meantime add a physical lock that does not depend on the ignition at all: a hardened chain or a disc lock through the frame or rear wheel, anchored to something fixed. Choosing a padlock that holds up in NYC covers shackle types and what survives a winter outdoors.
Not every no-start is a key problem, and the distinction saves money. Try the key in the seat lock. If it operates the seat cleanly but fights the ignition, the key is fine and the ignition is worn. If it is stiff everywhere, the key itself has worn down.
In most mechanical cases, yes - by cutting to the manufacturer's key code, or by decoding the wafers in one of the bike's own locks, usually the seat or luggage lock since those come off easily and were keyed alike from the factory. Bikes with an immobilizer also need the transponder paired, and whether that can be done outside a dealership depends on the make and model.
Not for a purely mechanical key. For a chipped key where every key is lost, some manufacturers' systems realistically require dealer tooling. The honest answer depends on the exact bike, which is why the year, make and model is the first question. Ask before anyone starts work rather than after.
A duplicate from an existing key is a few minutes. Decoding a lock and cutting a key to it is longer, because a lock usually has to come off the bike and go back on. A chipped key adds programming time on top. Anyone quoting a time before hearing the make and model is guessing.
Title or registration showing the bike in your name, plus photo ID that matches. Expect to be asked - it is how a legitimate locksmith avoids making keys for stolen vehicles, and it protects you for exactly the same reason.
Often it is the practical route on an inexpensive scooter, especially one with a magnetic shutter lock. Ask for both options and check whether the replacement set includes matching seat and fuel-cap locks, otherwise you will walk away carrying two keys where you used to carry one.
Not easily, and forcing the steering head risks damage that costs more than the key. The usual answer is to make a key on the spot rather than to move the bike. Call (718) 412-1332 with the year, make and model and we will tell you what the options are before anyone is dispatched.