OEM vs Aftermarket Motorcycle Keys and Fobs

Quick answerFor a plain metal key, a good aftermarket blank cut to the factory code does the same job as a factory key. The differences start to matter with chip keys and keyless fobs, where the electronics have to be accepted by your bike's system and some makes supply keys only through their dealers. Using an aftermarket key does not by itself cancel a warranty, but damage caused by a bad part is not covered.

What the two terms mean

An OEM key or fob is the part the motorcycle maker sells under its own part number, normally through its dealers. An aftermarket key is made by another company to fit the same lock and, where needed, to carry a chip the same system will accept. Neither label tells you who cuts or programs it: a dealer or a locksmith may use either. What matters to you is whether the part fits, starts the bike reliably, and can be supported later.

What you care about	OEM	Aftermarket
Fit in the locks	Made for the model	Good when the blank is the correct profile; varies by supplier
Chip or fob electronics	Matches the bike's system	Must be a type the system accepts; quality varies
Look and branding	Factory head and logo	Usually plain or generic head
Availability	Through dealers; may be ordered in	Common models are widely stocked; rare models may have none
Who can supply it	Dealer, and some locksmiths	Locksmiths and parts sellers
Price	Factory list price	Often lower for the part itself

Plain metal keys: the cut matters more than the brand

On a bike with no immobilizer, the key is a piece of shaped metal. If the blank has the correct blade profile and is cut to the factory code, the lock cannot tell who made it. That covers more bikes than riders expect: many Kawasaki and Suzuki models sold in the US have a plain key even where versions built for other markets carry a chip, and KTM's 390, 690, 790 and 890 families use a conventional key with no immobilizer. A key copied from a worn original, on the other hand, carries the wear forward no matter whose logo is on the head. Ask for the key to be cut to code where a code is available, and test it in the ignition, fuel cap, seat and any luggage locks.

Where aftermarket blanks do differ is in the metal and the finish. A soft or poorly plated blank wears and bends sooner, which matters on a key you also use as a lever on a stiff fuel cap. A reputable supplier's blank is fine for daily use.

Chip keys: the system has to accept it

With an immobilizer, the part has to do two jobs. The blade turns the lock and the chip answers the bike. Honda's owner's manual for bikes fitted with HISS, which is uncommon on US-market bikes, explains that the keys contain electronic circuits activated by the immobilizer system and will not start the engine if those circuits are damaged, and it warns against grinding, drilling or altering the key. An aftermarket chip key works when its chip is a type your system accepts and it has been registered to the bike.

Registration limits make part quality matter. Honda's HISS manual says up to four keys can be registered, including the ones in hand, and Suzuki's manuals for immobilizer-equipped models allow a dealer to register two more beyond the two registered at the factory. Every registered key counts toward that limit whether it is OEM or aftermarket. Systems with a master key add another rule: on Yamahas with the immobilizer, mostly export-market bikes, the manual says new standard keys are registered using the red code re-registering key, whichever brand of key you add.

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Fobs and the makes that take factory parts only

Keyless fobs are small radio transmitters paired to one bike, and they are the area where OEM is most often the only practical choice. BMW's rider's manual says replacement and extra keys can be obtained only through an authorised BMW motorcycle dealer. Can-Am describes its D.E.S.S. key as dealer programmable. For these, shopping around for an aftermarket part mostly wastes time.

For other fobs, be careful with two kinds of listing. A fob shell is only a replacement case: it helps when your buttons or housing are broken and the electronics still work, and it does nothing if the fob is lost. A used fob from another bike may already be locked to that bike's system and may not be able to be registered to yours. Ask whoever will do the programming whether they can work with the part before you buy it.

Warranty: what federal law says

Riders often worry that a non-factory key will void the warranty. The Federal Trade Commission's guide to federal warranty law says tie-in sales provisions are generally not allowed. A warranty cannot state or imply that you must buy or use a particular company's item or service to keep your coverage, unless that item or service is provided free under the warranty or the company has obtained a waiver from the FTC.

The same guide makes the limit clear: a warrantor can exclude damage caused by parts or service it did not provide. So an aftermarket key does not cancel your warranty by existing, but if a faulty part or a botched programming attempt damages a security component, that repair is yours. If a covered bike has an immobilizer fault with keys that used to work, take it to the dealer first, since that may be a warranty repair and not a key problem. This is general information, not legal advice.

How to decide

If the part price is the only difference in two quotes, ask what each includes. Programming, travel and a second key often move the total more than the choice between factory and aftermarket.

No chip: a quality aftermarket blank cut to code is a sound choice
Chip key on a widely supported system: either works; ask which chip type is being supplied and insist on a start test
Keyless fob: check whether your make supplies fobs only through dealers before pricing alternatives
Bike under factory warranty with a security fault: dealer first
Selling the bike soon: a factory key with the original look can matter to a buyer
Whichever you choose, test every lock and start the engine with each new key before you pay

Quick questions

Will an aftermarket key void my motorcycle warranty?

Not by itself. The FTC says a warranty generally cannot require you to use a particular brand of part to keep coverage, though the manufacturer can decline to pay for damage that a non-factory part or repair caused.

Do aftermarket chip keys work as well as factory ones?

A correct, good quality chip registered properly behaves the same in daily use. Quality varies by supplier, which is why the key should be tested by starting the bike several times before the job is finished.

Can I buy a used factory fob and have it programmed?

Sometimes not. A fob that was paired to another bike may not be able to be registered to yours, depending on the system. Confirm with the person who will program it before buying.

Does an aftermarket key use up one of my key slots?

Yes, on systems with a limit. Honda's HISS manual, for example, allows up to four registered keys in total, and the system does not distinguish who made them.

Services that can help

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Keep reading

Buying Motorcycle Keys Online by VIN, Code or BlankOrdering online can work well for a plain metal key when you have the key code, because the code tells the seller exactly how to cut it.
Dealer vs Locksmith for a Motorcycle Key: Which to CallFor plain metal keys, broken keys, worn ignitions and many transponder keys, a mobile motorcycle locksmith can usually do the work where the bike sits, often for less.
Motorcycle Key Fob and Keyless Ignition ProblemsMost keyless motorcycle problems come down to a weak fob battery, a fob the bike is not reading, a damaged fob or a lost one.
Motorcycle Immobilizers Explained: HISS, KIPASS and MoreA motorcycle immobilizer is an anti-theft system that only lets the engine start when it recognizes a coded chip in the key or a paired fob.
Roadside Assistance and Lost Motorcycle Keys: What It CoversMost motorcycle roadside plans will send help or tow the bike when a key is lost, but few pay for the key.

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Page last updated November 14, 2026.